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Replacement Parts, Service Manual and

1. 1 866 397 8481 Fax 1 320 693 5703 Page 61 www bigtowtrailers com Item 356022 Hydraulic Ramps See page 61 Description hydraulic hose kit 356000 bulkhead tee assembly 6 jic with nuts and washers 356002 hose assembly lower cylinder to tee 36 long 356007 356008 hose assembly valve to tee pressure hose tank to valve 44 long 356010 return hose valve to tank 64 long 376200 single spool valve 062049 pump mounting plate 370302 lower cylinder 3 1 2 x 16 ONI OJA e 377210 keyed switch 061156 hydraulic control box 061985 hydraulic control box cover 376140 hydraulic pump kit with 3 gallon tank Monarch 376205 2 spool valve with levers 394024 power cable 376251 12V solenoid switch Monarch 376273 reservoir Monarch 376250 12V motor Monarch 376272 pump assembly Monarch 376255 breather cap 376218 control levers Monarch 120549 hydraulic ramp 6 ft wood top 120551 hydraulic ramp 6 ft cleat 120720 hydraulic ramp 7 ft wood top 120548 hydraulic ramp 8 ft wood top 070050 010378 ramp ro
2. 866 397 8481 Fax 1 320 693 5703 www bigtowtrailers com 10K Hub and Drum Used on these models BE 10 air B 10 B 10T 25 1000 complete hub assembly does not include drum 25 1001 unitized oil seal 4 50 o d 3 125 i d 25 1003 inner bearing 25 1005 inner race 25 1007 brake drum only non ABS 25 1008 brake drum only for ABS with tone ring 25 1009 hub only 25 1011 5 8 cone wheel nut 25 1015 5 8 drive in stud outer race outer bearing 25 1021 oil cap kit includes cap o ring and plug 25 1023 wheel retaining ring 25 0903 tang washer not shown 25 0935 spindle nut not shown 25 0937 spindle washer not shown 866 397 8481 Fax 1 320 693 5703 www bigtowtrailers com 12K Hub and Drum Used on these models BE 12 B 10LP B 12LP B 12 B 12T 25 1200 complete hub assembly does not include drum 25 1001 unitized oil seal 4 50 o d 3 125 i d 25 1203 inner bearing 25 1205 inner race 25 1207 brake drum only non ABS 25 1208 brake drum only for ABS with tone ring 25 1209 hub only 25 1011 5 8 cone wheel nut not shown 25 1015 5 8 drive in stud 25 1217 outer race 25 1219 outer bearing 25 1021 oil cap kit includes cap o ring and plug 25 1023 wheel retaining ring 25 1025 tang washer not shown 31 1037 spindle nut not shown
3. mm iring Used these models 397220 7 pole RV nose lead not shown B 10T B 12T B 20T B 25T 397140 NOSE LEAD ABS NOTE CONNECT ALL WIRES COLOR BRN Hn PL10B 4 WHT RING 397145 FRONT MAIN HARNESS gt T 20Tilts ABS TO COLOR UNLESS OTHERWISED SPECIFIED 395005 6 pole trailer plug only 399023 7 pole trailer plug only PL10B BRN 2X MDe 180 FEMALE BLK PL10B 2X 5 12 GA m PL3 2X oc 7 397165 BRAKE LEAD gt T 20Tilts ABS 10 397147 REAR HARNESS TO SCALE DRAWING gt T e0Tilts ABS 390046 RV trailer plug only 397202 locking ring not shown www bigtowtrailers com Page 53 Fax 1 320 693 5703 866 397 8481 MD 10 BLack BROWN IN BOTH MDI2 MOLDS CA32 BLU CA32 WHT 5 5 397220 7 pole RV nose lead not shown MD2 8X 180 FEMALE Brakes QTY 5 EACH PER KIT Complete wiring harness p n 397086 www bigtowtrailers com NOTE CONNECT ALL WIRES COLOR TO COLOR UNLESS OTHERWISED SPECIFIED 6 12GA Page 54 5 12 GA JUNCTION BOX 15 BREAKERS H10 RINGS 14x gt BRN 397166 97156 397146 BRAKE LEAD gt T 20Tilts NOSE LEAD gt T 20Tilts FRONT MAIN HARNESS gt T 20Tilts 3971
4. 37 0592 ramp helper spring lift off ground 5 8 matl replaces 370590 16 4107 5 cleat style ramp deck overs heavy duty B 15 and 57 50 over all length 16 4111 6 cleat style ramp deck overs heavy duty B 15 and up 66 70 over all length 16 2300 5 wood top ramp deck overs heavy duty B 15 and up 59 5 over all length 16 2301 6 wood top ramp deck overs heavy duty B 15 and up 68 7 over all length 16 4105 5 cleat style ramp deck overs B 12 and down 57 5 over all length 16 4109 6 cleat style ramp deck overs B 12 and down 66 7 over all length 16 2302 5 wood top ramp deck overs B 12 and down 59 5 over all length 16 2303 6 wood top ramp deck overs B 12 and down 68 7 over all length 16 4022 aluminum ramp to load top deck on RG models 6 ft 16 4020 5 cleat style ramp B 35RG only 6 channel iron 65 over all length 866 397 8481 Fax 1 320 693 5703 Page 59 www bigtowtrailers com Item 356016 Hydraulic Bi Fold Ramp Note If possible please specify Monarch or Fenner system hydraulic hose kit 11ft hydraulic bi fold ramp Note Working pressure 2 500 psi 356000 bulkhead tee assembly 6 jic with nuts and washers 356002 hose assembly lower cylinder to tee 36 356004 hose assembly upper cylinder to tee 164 long
5. 25 0005 grease seal 2 25 14 25 6010 inner bearing cone 25 6012 inner race 25 6014 hub and drum only 25 6161 1 2 drive in stud 25 6018 outer race 6 bolt 25 9010 outer race 8 bolt 25 6020 outer bearing cone 6 bolt 25 9015 outer bearing cone 8 bolt 25 3522 spindle washer 25 3524 spindle nut 25 1526 jam nut 25 1524 nut retainer 25 6026 grease cap 6 bolt 25 5020 grease cap 8 bolt 25 6016 cotter pin 25 0008 axle only 6k rubber ride less hubs drums BE 5 C BE 6 BE 5BL BE 6BL 25 0010 axle only 6k rubber ride less hubs drums B 5LS B 6LS 45 deg down 25 0031 axle only 7k rubber ride less hubs drums B 7LS 45 deg down 25 0018 axle only 6k spring less hubs drums springs BE 5P BE 6P 37 0701 1 2 cone wheel nut not shown Complete axles 23 0003 axle 6k rubber ride electric 23 0013 axle 6k rubber ride hydraulic 23 0013F axle 6k rubber ride hydraulic free backing 23 0083 axle 7k rubber ride electric B 7 23 0005 axle 6k spring 4 drop electric 23 0008 axle 6k spring 4 drop hydraulic 23 0008F axle 6k spring 4 drop hydraulic free backing 23 8002 axle 6k rubber ride electric 45 deg down B 5LS B 6LS only 23 7421 axle 7k rubber ride electric 45 deg down B 7LS only 866 397 8481 Fax 1 320 693 5703 www bigtowtrailers com 8K Hub Drum and Axles Used on these models B 8DO
6. 29 1209 equalizer lock nut 29 1229 5 leaf spring BE 10 A BE 10 H 6 leaf spring all BE 12 replacement spring eye bushing 29 1207 spring eye bolt 1 x 5 1 2 29 0910 spring eye lock nut 29 1221 spring keeper bolt 1 2 x 4 1 2 29 1223 spring keeper nut 29 1023 u bolt with self locking nuts 29 1227 u bolt plate 866 397 8481 Fax 1 320 693 5703 Page 27 www bigtowtrailers com Hutchens Suspension Used on these models B 10 B 10LP B 10T B 12 B 12LP B 12T B 20 B 20LP B 20T B 25 B 25LP B 25RG B 25T B 25RGHT B 35RG B 35RGHT 29 0026 front spring hanger 29 0029 center spring hanger w equalizer 49 axle spacing 29 0029R rh center spring hanger w equal 54 1 2 axle spacing 29 0029L Ih center spring hanger w equal 54 1 2 axle spacing 29 0030 rear spring hanger 29 0024 3 leaf spring 22 400 Ib cap 29 0027 3 leaf spring 24 000 Ib cap B 20 B 25 B 35 29 2022 3 leaf Low arch spring 24 000 Ib Cap B 20LP B 25LP 29 0032 non adjustable torque arm 49 axle spacing 29 0032A non adjustable torque arm 54 1 2 axle spacing 29 0034 adjustable torque arm 49 axle spacing 29 0034A adjustable torque arm 54 1 2 axle spacing u bolts 7 8 x 5 rd x 11 3 4 washer 7 8 14 29 0040 hex nut 7 8 14 29 0042 torque arm bolt 1 14 x 5 29 0044 lock nut 1 14 29 0029 center spring hanger w equalizer 29
7. 1202 Ross Ave Ammon ID 83406 Darren Andrews www dracoequipment com 208 520 6161 E esci net fax 208 561 2172 Page 2 Table of Contents Read complete manual before using trailer 4 6 and 7K Hub Drum and Axles E Z Lube 8K Hub Drum and Axles 9K 10K General Duty Hub and Drum 10K Hub and Drum 12K Hub and Drum Hubs Drums 15K Hub and Drum and Axles 22 5K 25K Cast Spoke Hub and Drum 22 5K 25K Budd Hub and Drum 22 5K 25K 8 Bolt Budd Hub Piloted Hub and Drum 6K Electric Brake 12 x 2 6K Hydraulic Brake 12 x 2 8K Electric Brake 12 1 4 x 3 3 8 8K Hydraulic Brake 12 1 4 x 3 3 8 9K 10K General Duty Electric Brake 12 1 4 x 3 3 8 9K 10K General Duty Hydraulic Brake 12 1 4 x 3 3 8 Brake 10K Electric Brake 12 1 4 x 4 10K Hydraulic Brake 12 1 4 x 4 Components 12K 15K Electric Brake 12 1 4 x 5 12K Hydraulic Brake 12 1 4 x 5 10K 12K 22 5K and 25K Air Brakes Slipper Spring Suspension B 8DO Slipper Spring Suspension B 9 Slipper Spring Suspension 10 electric only Suspensions Slipper Spring Suspension BE 10 air amp hyd BE 12 Hutchens Suspension Air System 2S 1M Air System 25 2 Air System 4S 2M Air Systems Air System 65 3 Air System Fittings and ABS Components Wheels and Tires Tire Ratings Wheel Torque Requirements GVWR and TIRE SAFETY INFORMATION Wheels and Tires Em Jacks J acks amp Hitches Hitches and Couplers Lighting
8. Item Description 25 8002 hub and drum assembly 25 8010 unitized oil seal 3 376 o d 2 25 i d 25 6010 inner bearing 25 6012 inner race 25 8007 hub and drum only 5 8 studs 25 1015 drive in stud 5 8 25 8015 outer race 25 8020 outer bearing 25 6022 spindle washer 25 3532 tang washer not shown 25 3524 spindle nut 25 1526 jam nut 25 1524 nut retainer 25 5010 drive in grease cap 2 72 o d 25 3530 grease cap plug N OY OT e u N ES 25 8032 5 8 flange wheel nut not shown 25 8105 8k axle only spring less springs hubs and drums T 16 Complete axle 23 0034 complete axle assembly w springs T 16 deck over 866 397 8481 Fax 1 320 693 5703 www bigtowtrailers com 9K 10K General Duty Hub and Drum Used on these models B 9 BE 9 BE 10 electric Item 25 0900 complete hub assemby does not include drum 25 0901 unitized oil seal 3 88 0 d 2 875 1 4 25 1019 inner bearing 25 1017 inner race 25 0907 brake drum only 25 0909 hub only 25 8032 5 8 flange wheel nut B 9B B 9PRS not shown 25 1011 5 8 cone wheel nut not shown 25 1023 wheel retaining ring 25 1015 5 8 drive in stud 25 6012 outer race 25 1021 25 0903 tang washer not shown 25 0935 spindle nut not shown 25 0937 spindle washer not shown
9. adjuster lever and spring l h adjuster lever and spring r h piston stop bar adjuster spring 31 1122 cylinder push rod quantity 4 866 397 8481 Fax 1 320 693 5703 Page 20 www bigtowtrailers com Item Part 311229c 12K 15K Electric Brake 12 1 4 x 5 Used on these models BE 12 B 10LP B 12 B 12LP B 15 B 12T Lh brake assembly 12K 311231 r h brake assembly 12K 311251c Lh brake assembly 15K B 15 311253c r h brake assembly 15K B 15 311201c Lh shoe and lining kit 311203 r h shoe and lining kit 311344 actuator arm assembly 311345 r h actuator arm assembly 311017 r h arm shoe retainer 311015 311342 h arm shoe retainer flange nut magnet kit 12K magnet kit 15K centering spring adjuster cable Lh adjuster lever r h adjuster lever 311326 adjuster spri Lh adjuster assembly 311327 r h adjuster assembly 311365 dust shield 311352 brake mounting screw 316027 wire grommet 311367 adjuster clip thread end 311368 adjuster clip barrel end 311353 brake mounting nut 311354 brake mounting lockwasher 311518 return spring 866 397 8481 Fax 1 320 693 5703 Page 21 www bigtowtrailers com 12K Hydraulic Bra
10. 100 1 1 0104 8016 6 3 QOY 3AVHi H SV 3S0H Q9OLSZE 008498 TAD 140 SV 3S0H 00491108 TAD SV 450 vOLGLE COLGLE QvaHWING AAL 000946 012 14953 ON 1 Fax 1 320 693 5703 Page 64 www bigtowtrailers com 1 866 397 8481 Miscellaneous Parts 3 8 x 40 safety chain assembly grade 43 12 000 Ib ity models and smaller 37 0014 3 8 40 safety chain assembly grade 70 14 000 Ib capacity models through 20 000 Ib capacity 37 0002 1 2 x 40 safety chain assembly grade 70 24 000 Ib capacity models through 30 000 Ib capacity 37 0013 1 2 x 40 safety chain assembly grade 80 40 000 Ib capacity models 37 0006 5 8 x 40 safety chain assembly grade 80 50 000 Ib capacity models 37 0802 mud
11. 5 8 Flange Nuts Torque Sequence 1 1 1 6 3 4 3 2 2 5 2 866 397 8481 Fax 1 320 693 5703 Page 36 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION General A recent law was enacted that requires trailer manufacturers to place a tire and loading information decal placed near the serial tag on a trailer as well as detailed information on loading and tires in the owner s manual on all trailers with a GVWR Gross Vehicle Weight Rating of 10 000 Ibs or less This section of our manual covers the required information Tire and Safety Information This portion of the User s Manual contains tire safety information as required by 49 CFR 575 6 Section 1 1 contains Steps for Determining Correct Load Limit Trailer Section 1 2 contains Steps for Determining Correct Load Limit Tow Vehicle Section 1 3 contains a Glossary of Tire Terminology including cold inflation pressure maximum inflation pressure recommended inflation pressure and other non technical terms Section 1 4 contains information from the NHTSA brochure entitled Tire Safety Everything Rides On It This brochure as well as the preceding subsections describes the following items Tire labeling including a description and explanation of each marking on the tires and information about the DOT Tire Identification Number TIN Recommended tire inflation pres
12. 6 1 2 37 0305 cushion cylinder 3 1 2 x 16 866 397 8481 Fax 1 320 693 5703 Page 57 www bigtowtrailers com Under Ride Protection Ramps Used on these models B 10T B 12T B 20T B 25T Under Ride Protection for Tilt Trailers U S Patent No 6 053 691 Date of Issue 4 25 2000 pivot rod pivot pipe weld to bottom of frame each side 1 nut spring washer nut assembly threaded rod assembly pin push rod assembly push rod end assembly pin ramp assembly 8 6 wide model ramp rod 1 1 2 stress proof x 41 1 2 12 0463 wood top ramp st d width paver model 37 0234 roll pin not shown N OY UT A UJ N ES 866 397 8481 Fax 1 320 693 5703 Page 58 www bigtowtrailers com Item Part 05 0608 ramp hold up bar 38 Nie 37 0234 roll pin 5 16 x 1 1 2 37 0235 roll pin 5 16 x 3 37 0230 ramp hold down pin with chain 07 0050 cantilever rod stress proof 1 1 2 x 41 1 2 Qi Ru 16 0025 ramp rod 1 x 22 3 4 for 2 way spring assist 07 0016 16 0026 ramp rod 1 x 18 1 2 16 0260 cantilever 37 0590 ramp helper spring lift off ground 3 8 matl 37 0578 ramp helper spring lift off beavertail r h 37 0579 ramp helper spring lift off beavertail
13. Normal occupant weight This means 68 kilograms 150 105 times the number of occupants specified in the second column of Table of 49 CFR 571 110 Occupant distribution The distribution of occupants in a vehicle as specified in the third column of Table of 49 CFR 571 110 Open splice Any parting at any junction of tread sidewall or innerliner that extends to cord material Outer diameter The overall diameter of an inflated new tire Overall width The linear distance between the exteriors of the sidewalls of an inflated tire including elevations due to labeling decorations or protective bands or ribs Ply A layer of rubber coated parallel cords Ply separation A parting of rubber compound between adjacent plies Pneumatic tire A mechanical device made of rubber chemicals fabric and steel or other materials that when mounted on an automotive wheel provides the traction and contains the gas or fluid that sustains the load Production options weight The combined weight of those installed regular production options weighing over 2 3 kilograms 5 105 in excess of those standard items which they replace not previously considered in curb weight or accessory weight including heavy duty brakes ride levelers roof rack heavy duty battery and special trim Radial ply tire A pneumatic tire in which the ply cords that extend to the beads are laid at substantially 90 degrees to the centerline of the tread Recommended inf
14. 0048 hex nut 5 8 18 29 0050 hex bolt 5 8 x 4 1 2 29 0052 washer 5 8 shakeproof 29 0054 sleeve spacer 29 0056 step bolt 5 8 x 18 x 3 4 29 0058 double washer lock tab 5 8 29 0060 bottom plate u bolt 29 0062 spring seat 3 4 high 866 397 8481 Fax 1 320 693 5703 Page 28 www bigtowtrailers com Air System 2S 1M Used on these models BE 10 BE 12 B 10 B 10LP B 12 B 12LP B 10T B 12T B 20T B 20 B 20LP B 25RG B 35RG B 25RGHT B 35RGHT bottom side 4 ara Li dU 8 W p V 22 Air lines to front of trailer For identification of all air system fittings See page 34 Item 35 0136 blue 3 8 nylon air brake tubing 35 0156 red 3 8 nylon air brake tubing 06 0922 air tank mounting bracket 35 0003 3 4 plug square head black 35 0085 air tank 2800 cu in 35 0104R 3 8 air brake hose assembly with red glad hand 35 0052 glad hand only emergency red 35 0109 screen glad hand 35 0104B 3 8 air brake hose assembly with blue glad hand 35 0050 glad hand only service blue 35 0070 drain valve with 5 pull cable 35 0404 90 deg elbow comp fitting 35 0112 35 0400 1 35 0015 3 8 plug square head brass one each end of tank 35 0177 ecu valve assembly 25 1 35 0034 90 deg elbow 3 8 pipe 3 8 tube 35 0028 3 8 street elbow 35 0008 3 8 brass branch tee 35 0031 3
15. 25 www bigtowtrailers com Slipper Spring Suspension Used on these models BE 10 electric only Item Part 23 0020 Note Please indicate which suspension you have old style 3 4 components or new style 7 8 components New style start date 3 8 04 10k g d axle with hubs springs brakes elec 29 0010 10k g d single axle hanger kit includes items 1 3 8 amp 9 old style 3 4 components 29 0016 10k g d single axle hanger kit includes items 1 3 8 amp 9 new style 7 8 components 29 0012 multi axle conversion kit 48 1 2 axle spacing includes items 2 4 5 6 8 amp 9 old style 3 4 components 29 0018 multi axle conversion kit 48 1 2 axle spacing includes items 2 4 5 6 8 amp 9 new style 7 8 components 29 1001 left front hanger old style 3 4 components 29 1040 left front hanger new style 7 8 components 29 1003 right front hanger old style 3 4 components 29 1042 right front hanger new style 7 8 components 29 1017 29 1005 29 1013 29 1036 center hanger rear hanger Lh equalizer old style 3 4 components Lh equalizer new style 7 8 components 29 1015 r h equalizer old style 3 4 components 29 1038 r h equalizer new style 7 8 components 29 1019 equalizer bolt 1 x 5 3 16 29 0910 equalizer lock nut 29 1021 5 leaf slipper spring with rubber bushing 2 1 2 old styl
16. 31 1039 spindle washer not shown 866 397 8481 Fax 1 320 693 5703 www bigtowtrailers com 15K Hub and Drum Used on these models B 15 Item 25 1501 complete hub assembly r h without drum 25 1503 complete hub assembly I h without drum 25 1001 unitized oil seal 4 50 o d 3 125 i d 25 1203 inner bearing 25 1205 inner race 25 1207 brake drum only 25 1505 hub only r h 25 1507 hub only 25 1515 1 1 2 r h outer wheel nut 25 1513 13 16 r h inner wheel nut 5 1519 1 2 l h Outer wheel nut 25 1517 13 16 I h Inner wheel nut 25 1013 oil hub plug 25 1509 screw in stud r h 25 1511 screw in stud I h 25 1217 outer race 25 1219 outer bearing oil cap kit includes cap o ring and tang washer not shown 31 1037 Spindle nut not shown 31 1039 spindle washer not shown 866 397 8481 Fax 1 320 693 5703 www bigtowtrailers com 22 5K 25K Cast Spoke Hub and Drum Used on these models B 20T B 25T B 20 B 20LP B 25 B 25LP B 25RG B 25RGHT B 35 B 35RGHT 25 2001 rim spacer 25 2003 oil cap 25 2005 oil cap seal 25 2007 spindle nut outer 25 2009 spindle nut star washer 25 2011 spindle nut lock washer 25 2013 spindle nut inner 25 2015 bearing cone outer 25 2017 outer race 25 2019 rim clamp 25 2037 3 4 screw in stud 25 2025 h
17. 32 quantity needed hoses 35 0102 3 8 air brake hose 44 will vary with different 35 0103 3 8 air brake hose 54 models and deck lengths 35 0100 3 8 air brake hose 97 06 0793 ecu valve mounting bracket 06 2538 air line mounting bracket 39 4212 rubber grommet for air lines not shown 35 0078 rubber pad between air tank and mounting brackets not shown 35 0108 glad hand seal not shown 866 397 8481 Fax 1 320 693 5703 Page 32 www bigtowtrailers com Air System Fittings 350031 3 4 sq head plug branch tee 3 8 sq head plug 3 8 street elbow 90 deg male swivel 90 deg male swivel comp fitting 1 pipe elbow 1 4 pipe elbow 3 8 pipe 3 4 hose 35 0177 ecu valve assembly 2s 1m 35 0178 ecu valve assembly 2s 2m triple axle only 35 0173 ecu valve assembly 4s 2m 35 0187 abs diagnostic cable optional 35 0196 sensor spring clip 35 0194 sensor with molded socket 35 0161 power cord 2s 1m 35 0163 power cord 4s 2m 35 0198 sensor extension with plug 35 0177 abs system with 13 lead 2s 1m 35 0173 abs system with 13 lead 4s 2m 866 397 8481 Fax 1 320 693 5703 Page 33 www bigtowtrailers com Wheels and Tires ce c O28 Ge tire only ST175 80R x 13 load range C 27 0050 tire only ST205 75R x 15 load range C 27 0020 tire only ST225 75R x 15 load range
18. 356006 hose assembly valve to tee 356008 pressure hose tank to valve 44 long 356010 1 2 3 4 5 6 7 return hose valve to tank 64 long 356015 1 2 npt bleeder with o rings 376205 dual spool valve with levers 062049 pump mounting plate 370302 cylinder lower 3 1 2 x 16 370303 cylinder upper 3 1 2 x 16 377210 keyed switch 061156 hydraulic control box 061985 hydraulic control box cover 376140 hydraulic pump kit with 3 gallon tank Monarch 376105 hydraulic pump kit with 3 gallon tank Fenner no controller 376104 hydraulic pump kit with 3 gallon tank Fenner with controller 120442 lower cylinder pin 070193 upper cylinder pin 062039 lower cylinder mount 063440 Hold up bar not shown 376251 12V solenoid switch Monarch 376273 reservoir Monarch 376250 12V motor Monarch 376272 pump assembly Monarch 376255 breather cap Monarch 376218 control levers Monarch 394314 12V solenoid switch Fenner 376235 plastic reservoir Fenner 376240 12V motor Fenner 376238 pump assembly Fenner 353100 breather cap Fenner 1 866 397 8481 Fax 1 320 693 5703 Page 60 www bigtowtrailers com Hyraulic Bi Fold Ramp 1 5X1 5A 5B
19. 5703 Page 13 www bigtowtrailers com 6K Hydraulic Brake 12 x 2 Used on these models B 5LS B 6LS Item Description 31 6102 complete assembly I h 31 6104 complete assembly r h 31 3606 brake cylinder l h 31 3608 brake cylinder r h 31 3610 screw and washer assembly 31 3612 anchor post washer 31 6106 retractor spring one pair 31 6108 shoe and lining kit 31 3517 hold down springs 31 3519 adjuster assembly 31 6110 adjuster screw spri 31 3507 dust plug pkg of 4 31 3509 brake mounting bolt 31 6031 brake mounting nut 35 3010 rubber brake hose assembly 35 3012 long steel hyd line from actuator to axles 35 3000 complete hydraulic line fitting kit 866 397 8481 Fax 1 320 693 5703 Page 14 www bigtowtrailers com 8K Electric Brake 12 1 4 x 3 3 8 Used on these models B 8DO Item Description 310829c Lh brake assembly 310831c r h brake assembly 310901c Lh shoe and lining kit 310903c r h shoe and lining kit 311007 Lh actuator arm assembly 311009 r h actuator arm assembly 311015 I h arm shoe retainer 311017 r h arm shoe retainer 311535 flange nut 311347 i centering spring adjuster cable Lh adjuster lever r h adjuster lever adjuster spring Lh adjuster assembly r h adjuster assembly dust shield brake mounting bolt 316027 wire grommet 311368 adjuster clip b
20. B 7LS 45 1800 B 10 45 1810 B 12 45 1805 B 10LP 45 1815 B 12LP Sus WARNING 45 1825 B 20 45 1845 B 20LP For proper performance all new axles should have 45 1830 B 25 the following checked at the specific intervals 45 1850 B 25LP Wheel Nut Torque 45 1835 B 25RG Upon delivery at 10 25 and 50 miles and weekly 45 1840 B 35RG thereafter KEEP THEM TIGHT 45 1855 B 25RGHT Brake Adjustment 45 1860 B 35RGHT At 200 miles and 3 000 miles and every 3 000 miles thereafter Tire Pressure Upon delivery and per tire manufacturer s requirements 4500098 P n 450009A p n 453220B A WARNING This trailer with ELECTRIC BRAKES requires an electric brake controller in tow vehicle Load must be secured according to D O T standards Follow DOT Federal Motor Carrier Safety Regulations 392 9 393 100 and 393 102 Trailer tongue is rated to transfer 20 25 of gross weight to achieve maximum payload capacity and proper towing Check hitch bolts frequently Use only grade 8 bolts and nuts on hitch KEEP THEM TIGHT Trailer must be towed level or slightly higher 1 to 2 in front 453220B 866 397 8481 Fax 1 320 693 5703 Page 69 www bigtowtrailers com Decals Warnings and Cautions AWARNING Screen in glad hand must be clean betore connecting p n 453301 Warning Screen in glad hand to tow vehicle must be clean before connecting to tow vehicle Keep clean clean A WAR
21. Batteries Battery Boxes Wiring Harness Deck Overs with Electric Brakes Wiring Harness All ABS Models E lectric al Wiring Harness Tilt Models with ABS Wiring Harness Tilt Models with Electric Brakes Wiring Circuits Deck Latching Systems Tilt Models Deck Cushion Cylinder Under Ride Protection Ramps Tilt Models Tilt Components Hydraulic Bi fold Ramp and Ramps Hydraulic Bi fold Ramp Hydraulic Ramps Hydraulic Ramps Hydraulic Folding Tail Miscellaneous Parts 5 Recommended Outrigger Loadings Miscellaneous Payload Ratings Towing Tips and Check List Decals Warnings and Cautions 1 Decals Warnings and Cautions Decals Warnings Decals Warnings and Cautions and Cautions Decals Warnings and Cautions Decals Warnings and Cautions Decals Warnings and Cautions Beis asia Maintenance and Operating Instructions Maintenance amp Maintenance and Operating Instructions Maintenance and Operating Instructions Operating Maintenance and Operating Instructions Instructions Maintenance and Operating Instructions Maintenance and Operating Instructions WARNINGS 866 397 8481 Fax 1 320 693 5703 www bigtowtrailers com 6K and 7K Hub Drum and Axles non E Z lube Used on these models B 5LS B 6LS B 7LS Note 6K 6 bolt assembly is shown please indicate 6K 7K 6 bolt or 8 bolt when ordering Model B 7LS use 7K axles Item 25 6000 6K hub and drum assembly 6 bolt 25 5005 6K 7K hub and drum assembly 8 bolt
22. D 27 0090 tire only 235 85R x 16 load range E 27 0044 tire only 245 75R x 16 load range E 27 0041 tire only 235 85 x 16 12 ply bias C 14 27 0043 tire only 235 85R x 16 12 ply load range G C 14 upgrade to radial 27 0040 i 215 75R 17 5 16 pl 27 0104 wheel only 6 15 white modular 6 bolt on 5 1 2 b c 27 0107 wheel only 6 15 white modular 8 bolt on 6 b c 27 0105 wheel only 6 15 spoke 8 bolt on 6 1 2 b c not shown 27 0112 wheel only 6 x 15 oem 5 bolt on 4 1 2 b c 27 0102 wheel only 6 x 15 oem 6 bolt on 5 1 2 b c 27 0110 wheel only 6 x 16 white modular 6 bolt on 5 1 2 b c 27 0111 wheel only 6 x 16 white modular 8 bolt 27 0130 wheel only 6 x 16 white modular 6 bolt on 5 1 2 b c 1 2 offset 27 0108 wheel only 6 x 16 oem 6 bolt 27 0109 wheel only 6 x 16 oem 8 bolt 27 0602 wheel only 6 75 x 17 5 single wheel 8 bolt silver different offset than white wheel 27 0606 wheel only 6 75 x 17 5 single wheel 8 bolt white different offset than silver wheel 27 5030 tire wheel assembly ST175 80R x 13 load range on 4 5 x 13 white mod 5 bolt on 4 1 2 b c 27 5003 tire wheel assembly ST205 75R x 15 load range C on 6 x 15 white mod 6 bolton 5 1 2 b c 27 5005 tire wheel assembly ST225 75R x 15 load range D on 6 x 15 white mod 6 bolton 5 1 2 b c 27
23. N m a 5 7 o LI 395005 6 pole trailer plug only 399023 7 pole trailer plug only 390046 RV trailer plug only CA32 BLU CA32 WHT NOTE CONNECT BLACK COMPLETE WIRING HARNESS P N 397082 MD2 8X 180 FEMALE MD9A 397136 BRAKE LEAD 10 397138 NOT TO SCALE DRAWING REAR HARNESS 397202 locking ring not shown www bigtowtrailers com Page 51 Fax 1 320 693 5703 866 397 8481 Wiring Harness All ABS Models Used on these models BE 10 BE 12 10 101 B 12 B 12LP 397220 7 pole RV nose lead B 20 B 20LP B 25 B 25LP B 25RG B 35RG not shown B 25RGHT B 35RGHT GOV sav dva1 35 X08 NOILINO 395005 6 pole trailer plug only 32v78 193NN09 310N 431413345 0351 43 1 5531 amm am 53418 77 123NND2 31DN 54 M3oBVW INDJ DNIA Ol ZEWL 3 13 8 02 399023 7 pole trailer plug only DNI OJE X2D 6WL DNIA 018 X25 OIWL NOILINAF ELWL Complete wiring harness p n 397084 DNIJ LHA Sav 1 3 2 Oo E 4 gt m a gt 2 e 390046 RV trailer plug only yD 21 S8V 553 ayaa 30ww34 081 24 xe 8011 397202 locking ring shown 866 397 8481 Fax 1 320 693 5703 Page 52 www bigtowtrailers com Uu lt E 2 gt T 7
24. all lights for proper operation daily and replace as necessary Connect power source preferably tow vehicle to trailer and check all lights for proper operation and possible loose connections or improper wiring between tow vehicle and trailer 866 397 8481 Fax 1 320 693 5703 Page 75 www bigtowtrailers com Maintenance and Operating Instructions PARKING J ACK Check jack for any physical damage or improper operation due to corrosion Replace if severely damaged or rusted Check bolts for tightness daily and be sure the lock washers and or lock nuts are used TIE DOWN RINGS Check daily for physical damage to D ring clips or welds and replace or repair immediately SUSPENSION BOLTS After an initial break in period of 150 miles and periodically thereafter every 1000 miles all bolts and nuts should be rechecked for proper torque Check eye bushings in springs for wear and replace any part if wear shows DECK CUSHION CYLINDER Use ATF oil or equivalent Tilt models only COUPLER TOW RING Inspect visually if coupler shows excessive wear it should be replaced TOW RING Inspect for tightness daily before use Ring plate must be tight againt hitch plate to prevent plate deformation If ring shows excessive wear it should be replaced immediately Double nut bottom bolts 4 bolt pintle ring TOW RING INSTALLATION Determine proper tow ring height according to tow vehicle Install tow ring with secondary sup
25. center hanger 29 3855 rear hanger 29 3857 equalizer with rubber bushing 29 0909 equalizer bolt 1 x 5 1 2 29 0910 equalizer lock nut 29 0850 leaf spring B 8DO 29 0083 leaf spring B 9 3 29 0917 spring eye bolt 5 8 x 4 29 0919 spring eye lock nut 29 0921 spring keeper bolt 5 16 x 3 1 4 29 0923 spring keeper nut 29 0913 u bolt with self locking nuts 29 0915 u bolt plate NI OY UT e UJ 866 397 8481 Fax 1 320 693 5703 Page 24 www bigtowtrailers com Slipper Spring Suspension Used on these models B 9 Item Part 23 0019 9k axle with hubs springs and brakes elec 23 0018 9k axle with hubs springs and brakes hyd 29 0068 single axle hanger kit includes items 1 3 8 9 10 amp 11 29 0070 multi axle conversion kit 48 1 2 axle spacing includes items 2 4 5 6 8 9 10 amp 11 29 0901 front hanger 29 0903 center hanger 29 0905 rear hanger 29 0907 equalizer with rubber bushing 29 0909 equalizer bolt 1 x 5 1 2 29 0910 equalizer lock nut 9 0911 6 leaf spring with rubber bushing 29 0917 spring eye bolt 5 8 x 4 29 0919 spring eye lock nut 29 0921 spring keeper bolt 5 16 x 3 1 4 29 0923 spring keeper nut 29 0913 u bolt with self locking nuts 29 0915 u bolt plate 866 397 8481 Fax 1 320 693 5703 Page
26. down springs and adjuster springs for stretch or deformation and replace if required ASBESTOS DUST HAZARD Since some brake shoe friction materials contain asbestos certain precautions need to be taken when servicing brakes 1 Avoid creating or breathing dust 2 Avoid machining filing or grinding the brake linings 3 Do not use compressed air or dry brushing for cleaning Dust can be removed with a damp brush BRAKE ADJ USTMENT Brakes should be adjusted 1 after the first 200 miles of operation when the brake shoes and drums have seated 2 at 3000 mile intervals 3 or as use and performance requires The brakes should be adjusted in the following manner Jack up trailer and secure on adequate capacity jack stands Do not lift or place supports on any part of the suspension system Check that the wheel and drum rotate freely Remove the adjusting hole cover from the adjusting slot on the bottom of the brake backing plate With a screwdriver or standard adjusting tool rotate the starwheel of the adjuster assembly to expand the brake shoes Adjust the brake shoes out until the pressure of the linings against the drum makes the wheel very difficult to turn With drop spindle axles a modified adjust ing tool with about an 80 degree angle should be used Rotate the starwheel in the opposite direction until the wheel turns freely with a slight lining drag Replace the adjusting hole cover and lower the wheel to
27. exists in a group of vehicles it may order a recall and remedy campaign However NHTSA cannot become involved in individual problems between you your dealer or Big Tow Inc To contact NHTSA you may either call the Auto Safety Hotline toll free at 1 800 424 9393 or 366 0123 in Washington DC area or write to NHTSA U S Department of Transportation 400 7th Street SW NSA 11 Washington DC 20590 You may also obtain other information about motor vehicle safety from the Hotline Maintenance and Operating Instructions TIRES Check daily and maintain proper inflation Refer to Tire Chart WHEEL NUTS Check weekly and maintain proper torque WHEEL BEARINGS Check bearings every 3000 miles Grease if necessary Check for overheating and excessive wear when operating in severe conditions i e deep mud sand or water and also when a hub is pulled for any reason WHEEL BEARINGS LUBRICATION Check oil level of wheel bearings daily Where severe operating conditions such as deep mud sand or water etc are encountered bearings should be checked for over heating or excessive wear and also when a hub is pulled for any reason Fill hub with SAE 90 oil to indicated level on hub cap BATTERY Keep battery charged To ensure proper break a way protection check battery regularly for proper charge ELECTRICAL PLUG Check trailer plug and truck receptacle for damage and or corrosion and that they fit tight LIGHTS WIRING Inspect
28. left turn yellow left turn red stop lights green right turn NOTE The contacts are identified by looking into the open end of either the truck receptacle or trailer plug 6 amp 7 pole 451407 AIR BRAKE SYSTEM WIRING 4 5 WIRE SCHEMATIC TRAILER ABS WARNING LAMP INTRACTOR ECU INTERNAL GROUND 5 WIRE CABLE ONLY WHITE AND YELLOW WHITE GROUND SECOND ABS POWER ey AND LD LIGHTS POWER SOURCE TRAILER ABS WARNING LAMP GREEN AND WHITE ECU POWER CONNECTOR ABS ONLY 451415 GROUND www bigtowtrailers com Deck Latching Systems Non Stationary Deck 00004 Stationary Deck Item Description 16 0002 complete latch assembly less hook and bar 37 0232 handle grip 37 0230 pin w chain 12 0054 latch handle 06 0112 latch mount quantity 2 assembly 36 0034 5 8 ny lock nut 36 0133 5 8 x 2 1 2 gr 5 bolt 36 0301 u bolt 07 0010 swivel rod 36 0049 3 4 ny lock nut SJ eA 06 0790 latch handle brace 37 0535 latch handle spring 06 0788 latch handle 07 0080 latch shaft 8 6 wide models only 06 4655 latch hook 866 397 8481 Fax 1 320 693 5703 Page 56 www bigtowtrailers com Deck Cushion Cylinder Hydraulic Deck Cushion Cylinder 2 Use ATF oil or equivalent Description 12 0101 cylinder pin 4 12 0102 cylinder pin
29. the ground Repeat the above procedure on all brakes green brake is unground unburnished brake Normal manu facturing tolerances dictate that there is a break in period required after which the lining will seat into a perfect concentric situation During this break in period the user must be aware that additional brake adjustments will be mandatory to achieve optimum braking performance 866 397 8481 Fax 1 320 693 5703 Page 77 www bigtowtrailers com Maintenance and Operating Instructions AIR AXLES AND AIR BRAKES 15 000 miles or a minimum of twice a year Inspect wheel bearings Check all seals for signs of wear 25 000 30 000 miles Check lining wear and estimate reline time Check brake adjustment and inpect rollers roller shafts anchor pins and bushings replace if necessary Inspect cam shafts cam shaft bushings cam shaft brackets and cam shaft bracket bushings for wear Lubricate brake actuating components 100 000 miles or at brake relining Overhaul and lubricate all brake actuating components Check brake chambers Replace oil in wheel bearings RECOMMENDED BRAKE ADJ USTMENT PROCEDURE 1 Grease cam bracket and spider fittings WARNING Care must be exercised to prevent grease from coming in contact with brake linings which could result in reduced braking performance 2 Adjust the slack adjuster until the brake lining comes into contact with the brake drum For green brakes ther
30. when parking With radial tires it is usually not possible to determine underinflation by visual inspection For convenience purchase a tire pressure gauge to keep in your vehicle Gauges can be purchased at tire dealerships auto supply stores and other retail outlets The recommended tire inflation pressure that vehicle manufacturers provide reflects the proper psi when a tire is cold The term cold does not relate to the outside temperature Rather a cold tire is one that has not been driven on for at least three hours When you drive your tires get warmer causing the air pressure within them to increase Therefore to get an accurate tire pressure reading you must measure tire pressure when the tires are cold or compensate for the extra pressure in warm tires 1 5 4 Steps for Maintaining Proper Tire Pressure Step 1 Locate the recommended tire pressure on the vehicle s tire information placard certification label or in the owner s manual Step 2 Record the tire pressure of all tires Step 3 If the tire pressure is too high in any of the tires slowly release air by gently pressing on the tire valve stem with the edge of your tire gauge until you get to the correct pressure Step 4 If the tire pressure is too low note the difference between the measured tire pressure and the correct tire pressure These missing pounds of pressure are what you will need to add Step 5 At a service station add the missing pounds of air
31. 397 8481 Fax 1 320 693 5703 Page 48 www bigtowtrailers com Hitches and Couplers For hitch extension only DO NOT use for hitch height adjustment Use all mounting bolts to mount to hitch plate 458206 33 0036 2 5 16 ball coupler 12 000 Ib capacity 33 0012 repair kit for 2 5 16 ball coupler 33 0036 only 33 0035 2 5 16 ball coupler 25 000 Ib capacity 33 0050 3 i d pintle ring 4 bolt 33 2809 2 king ping 12 0340 12 hitch extension any model with 4 bolt pintle ring 24 000 Ib capacity 12 0342 12 hitch extension heavy duty any model with 4 bolt pintle ring T 30 and up 33 0029 replacement outer tube assembly for goosenecks 33 0028 2 5 16 coupler inner section only 33 0027 2 5 16 coupler complete assembly 30 000 Ib capacity 33 0030 2 king pin assembly inner section only 33 0032 inverted 5th wheel assembly inner section only 866 397 8481 Fax 1 320 693 5703 Page 49 www bigtowtrailers com Lighting Batteries Battery Boxes 35 1800 12V wet cell battery cannot ship UPS 35 1803 stainless steel battery box bottom only 35 1802 stainless steel battery box lid only 35 1801 stainless steel battery box bottom and lid 39 3011 license plate i d light 35 1808 tow charger 35 0201 break a way switch 39 3005 marker light mounting grommet 39 3007 amber marker light standard light 39 3009 red marker light standard light 39 2745 amber marker l
32. 4120 tire wheel assembly ST225 75R x 15 load range D on 6 x 15 white mod 8 bolt on 6 b c 27 4100 tire wheel assembly ST225 75R x 15 load range D on 6 x 15 spoke 8 bolt on 6 b c not shown 27 4080 tire wheel assembly ST205 75R x 15 load range C on 6 x 15 oem 5 bolt on 4 1 2 b c 27 5002 tire wheel assembly ST205 75R x 15 load range C on 6 x 15 oem 6 bolt on 5 1 2 b c 27 4090 tire wheel assembly ST225 75R x 15 load range D on 6 x 15 oem 5 bolton 4 1 2 b c 27 5004 tire wheel assembly ST225 75R x 15 load range D on 6 x 15 oem 6 bolton 5 1 2 b c 27 6010 tire wheel assembly 235 85R x 16 load range E on 6 x 16 white mod 6 bolt on 5 1 2 b c 27 6020 tire wheel assembly 235 85R x 16 load range E on 6 x 16 white mod 8 bolt 27 5022 tirejwhees assemb y 245 75R x 16 load range E on 6 16 White mod 6 bolt on 5 1 2 b c tire wheel assembly 235 85R x 16 12 ply radial on 6 x 16 white mod 8 bolt C 14 upgrade to radial tire wheel assembly 235 85R x 16 load range E on 6 x 16 oem 6 bolt tire wheel assembly 235 85R x 16 load range E on 6 x 16 oem 8 bolt tire wheel assembly 215 75R x 17 5 16 ply load range H on 6 75 x 17 5 single wheel 8 bolt silver 27 5015 tire wheel assembly 215 75R x 17 5 16 ply load range H on 6 75 x 17 5 single wheel 8 bolt white 37 0413 valve stem 37 0501 valve stem 37 0
33. 48 PLIO REAR HARNESS gt T 20Tilts 45 Q 49 lt C gt Q 73 Q E N zi 5 n NOT TO SCALE DRAWING Fax 1 320 693 5703 iring 390046 RV trailer plug only Used on these models 395005 6 pole trailer plug only 399023 7 pole trailer plug only 866 397 8481 397202 locking ring not shown Wiring Circuits Note Locate wires by function only Color coding is not standard among all manufacturers 4 Pole Flat White Brown ZO N CECE creen _ _ Of Truck Plug Trailer Receptacle white ground brown tail lights right turn yellow left turn 7 Pole RV Connector Vehicle End Trailer End P N 39 0045 P N 39 0044 1 GROUND ELECTRIC BRAKES RUNNING LIGHTS BATTERY L H STOP amp TURN 6 R H STOP amp TURN 866 397 8481 Fax 1 320 693 5703 Page 55 White Brown Brown White Blue Blue Black Black Green Yellow Yellow Red Green Trailer Plug Truck Receptacle Truck Receptacle Trailer Plug p n 39 5005 p n 39 5006 p n 39 9025 p n 39 9023 white ground brown tail clearance side marker brown tail lights and license plate lights black accessory white ground blue brakes black accessory green right turn blue electric brakes yellow
34. 573 valve stem 37 0574 valve stem 866 397 8481 Fax 1 320 693 5703 Page 34 www bigtowtrailers com Tire Ratings ST17580R 13 load range c 6 ply rating 1360 Ibs 50psi single wheel application ST205 75R x 15 load range 6 ply rating 1820 106 50psi single wheel application ST225 75R x 15 load range 8 ply rating 2540 lbs 65psi single wheel application 215 75R 17 5 load range h 16 ply rating 4805 lbs 125psi single wheel application ee ee 2 212 2 2 3 GP eae 1 12 235 856 16 load range e 10 ply rating 3042 lbs 80psi wheel application 235 85R x 16 load range 10 ply rating 2778 lbs 80psi dual wheel application 245 75R x 16 load range 10 ply rating 3042 lbs 80psi single wheel application 245 75R x 16 load range e 10 ply rating 2778 lbs 80psi dual wheel application 866 397 8481 Fax 1 320 693 5703 Page 35 www bigtowtrailers com Wheel Torque Requirements Ft Lbs 2nd Stage 3rd Stage Wheel Size 1stStage 2nd Stage 3rd Stage 12 20 25 35 40 50 75 13 20 25 35 40 50 75 14 20 25 50 60 90 120 15 20 25 50 60 90 120 16 20 25 50 60 90 120 16 5 x 6 75 20 25 50 60 90 120 16 5 x 9 75 55 60 120 125 175 225 14 5 Demount Tighten sequentially to 85 95 17 5 Hub Pilot 50 60 100 120 190 210 Clamp Ring amp Cone Nuts 17 5 Hub Pilot 50 60 190 200 275 325
35. 8 straight male connector 3 8 pipe 3 8 tube 35 0183 ing brake valve 35 0101 3 8 air brake hose 24 specify lengths and 35 0107 3 8 air brake hose 32 quantity needed hoses 35 0102 3 8 air brake hose 44 will vary with different 35 0103 3 8 air brake hose 54 models and deck lengths 35 0100 3 8 air brake hose 97 N OY UT 06 0793 ecu valve mounting bracket 06 2538 air line mounting bracket 39 4212 rubber grommet for air lines not shown 35 0078 rubber pad between air tank and mounting brackets not shown 35 0108 glad hand seal not shown 866 397 8481 Fax 1 320 693 5703 Page 29 www bigtowtrailers com Air System 25 2 bottom side of tank Used on these models B 25T B 25 B 25LP 2212 For identification of all system fittings See page 34 Item Part 35 0136 blue 3 8 nylon air brake tubing bottom side Air lines to front of trailer 35 0156 red 3 8 nylon air brake tubing 06 0922 air tank mounting bracket 35 0003 3 4 plug square head black 35 0086 air tank 4307 cu in 35 0104R 3 8 air brake hose assembly with red glad hand 35 0052 glad hand only emergency red 35 0109 screen glad hand 35 0104B 3 8 air brake hose assembly with blue glad hand 35 0050 glad hand only service blue 35 0070 drain valve with 5 pull cabl
36. Bigtowtrailers com 866 397 8481 Fax 1 320 693 5703 Page 73 www bigtowtrailers com Decals Warnings and Cautions p n 451240 ATTENTION pm soa og This traileris 102 wide This width A green brake is an unground trailer is legal on all federally unburnished brake Normal funded highways Some states manufacturing tolerances dictate that require that trailers be no wider there is a break in period required after than 96 on state roads Check with which the lining will seat into a perfect your state ighway department for concentric situation During this break in period the user must be aware that additional brake adjustments will be mandatory to achieve optimum braking performance 451240 p n 452925 Registration Holder Parts and Service Manual enclosed To receive an additional 6 months warranty of MAIN FRAME only return your warranty registration within 14 days See dealer 866 397 8481 Fax 1 320 693 5703 Page 74 www bigtowtrailers com Reporting Safety Defects Maintenance and Operating Instructions Reporting Safety Defects Reporting Safety Defects If you believe that your vehicle has a defect which could cause a crash or could cause injury or death you should immediately inform the National Highway Traffic Safety Administration NHTSA in addition to notifying Big Tow Inc If NHTSA receives similar complaints it may open an investigation and if it finds that a safety defect
37. Bolt Budd Hub Piloted Hub and Drum Used on these models B 20T B 25T B 20 B 20LP B 25 B 25LP B 25RG B 25RGHT B 35RG B 35RGHT ltem Part Z 25 0100 assy hub amp drum 8 stud on 275mm b c 25 0101 assy hub amp drum 8 stud on 275mm b c ABS 25 0110 assy hub 8 stud on 275mm 25 0111 assy hub 8 stud on 275mm ABS 25 0120 ABS tone ring not shown 25 2029 inner bearing cup 25 2027 inner bearing not shown 25 2017 outer bearing cup 25 2015 outer bearing not shown 25 0135 swivel flange nut 25 2005 gasket oil cap 25 2003 oil cap with vent plug 25 0123 lockwasher oil cap 25 0124 cap screw oil cap OR jw OONO m 866 397 8481 Fax 1 320 693 5703 Page 12 www bigtowtrailers com 6K Electric Brake 12 x 2 Used on these models B 5LS B 6LS Item Description 31 6001 complete assembly l h 31 6003 complete assembly r h 31 6005 shoe and lining kit 31 3507 dust plug pkg of 4 31 6011 actuating lever arm l h 31 6013 actuating lever arm r h 31 6015 magnet kit 31 3517 hold down springs 31 3519 adjuster assembly 31 3521 adjuster screw spring 31 6023 retractor spring one pair 31 3525 anchor post washer 31 6027 wire grommet 31 6029 lock washer 31 6031 brake mounting nut 866 397 8481 Fax 1 320 693
38. E JACK IF SO EQUIPPED IS RETRACTED STATE MOTOR VEHI CLE DEPARTMENT WITH THE MANUFACTURER S FOR MORE INFORMATION ALSO OPERATING INSTRUCTIONS WHEEL LUG BOLTS ARE PROPERLY TIGHTENED AND CAUTIONS LISTED TIRES ARE INFLATED TO PRESSURE INDICATED ON TIRE REFER TO DOT FEDERAL MOTOR TRAILER BRAKES ARE PROPERLY ADJUSTED AND BREAK AWAY DEVICE IS ATTACHED TO TOW VEHICLE CARRIER SAFETY REGULATIONS TO THE RIGHT 4 LOAD IS WITHIN TRAILER CAPACITY AND DISTRIBUTED PROPERLY TO MAINTAIN PROPER TONGUE WEIGHT 392 9 393 100 AND 393 102 452820 p n 450014 p n 450008 E Z LUBE SYSTEM By DEXTER GREASE HERE cani WE TT J RUBBER PLUG LUBRICATE EVERY 30 AS NECESSARY 866 397 8481 Fax 1 320 693 5703 Page 71 www bigtowtrailers com Decals Warnings and Cautions AWARNING For hitch extension only DO NOT use for hitch height adjustment Use all mounting bolts to mount to hitch plate A CAUTION Pallet forks must be secured to trailer while trailer is in motion CAUTION Insert pins Remove pins here when n and keepers trailer is in store transport 4 PT 4 here when Remove 3 only to operating operate ramps CAUTION BREAK A WAY SWITCH IS FOR EMERGENCY USE ONLY Pulling break away switch lead while trailer electrical plug is connected to truck receptacle or pulling break away switch lead for use as a park brake may cause severe damage to wiri
39. GROUND 5 WIRE CABLE ONLY WHITE AND YELLOW 7 WAY WHITE GROUND I D LIGHTS POWER SOURCE p n 451415 TRAILER ABS WARNING LAMP GREEN AND WHITE ECU POWER GROUND CONNECTOR ABS ONLY 451415 White Brown Brown White Blue Blue Black Black Green Yellow Yellow Red Green Trailer Plug Truck Receptacle Truck Receptacle Trailer Plug p n 451407 p n 39 5005 p n 39 5006 p n 39 9025 p n 39 9023 white ground brown tail clearance side marker brown tail lights and license plate lights black accessory white ground blue brakes black accessory green right turn blue electric brakes yellow left turn yellow left turn red stop lights green right turn NOTE The contacts are identified by looking into the open end of either the truck receptacle or trailer plug 6 amp 7 pole 451407 p n 452820 Po es A CAUTION A WARNING COUPLER HITCH AND TRAILER BALL ARE THE SAME SIZE YOU ARE REQUIRED TO COMPLY WITH PROPER Y DAMAGE CAN COUPLER IS LATCHED LOCAL AND STATE REQUIREMENTS SAFETY CHAINS ARE CRISSCROSSED UNDER TONGUE AND ATTACHED TO TOW VEHICLE REGARDING BRAKES LICENSING AND RESULT IF THIS VEHICLE ALL TRAILER LIGHTING IS WORKING CORRECTLY AN ADDITIONAL EQUIPMENT THAT IS TOWED BEFORE LOAD IS SECURED TO TRAILER FRONT AND REAR MAY BE NECESSARY CONTACT YOUR FAMILIARIZING YOURSELF TONGU
40. NING p n 450269 Warning TILT DECK When releasing TILT DECK deck locking lever s stay clear of deck area when ee ae bu Ge i loading amp unloading When deck is in down position clear of deck area when loading amp unloading When deck make site make sure safety pin for deck locking lever is in lock safety pin for deck locking lever is in lock position position Failure to unhook platform latch prior to unloading equipment will cause trailer damage cause trailer damage A WARNING UNCAGE ALL p n 451250 Warning UNCAGE ALL PARK BRAKES Failure to uncage all park brake a a 5 RAKE 5 chambers will result in improper operation of park brake chambers AS AO park brake s and trailer may roll will result in i improper 2 operation of par brake s and eue may roll REMOVE TO UNCAGE Correct loading A WARNING p n 452401 Warning Correct loading of machine Loading of machine this way may exceed tongue weight Triple axle models Correct loading of machine p p n 452405 Warning Correct loading of machine Loading of machine this way may exceed tongue weight Tandem axle models way may excee tongue weight 866 397 8481 Fax 1 320 693 5703 Page 70 www bigtowtrailers com Decals Warnings and Cautions AIR BRAKE SYSTEM WIRING 4 5 WIRE SCHEMATIC TRAILER ABS WARNING LAMP ECU INTERNAL
41. Used on these models B 10 B 10T Item _ Part 311029c Lh brake assembly 7 bolt 311031c r h brake assembly 7 bolt 311001c Lh shoe and lining kit 311003c r h shoe and lining kit 311007 Lh actuator arm assembly 311009 r h actuator arm assembly 311015 Lh arm shoe retainer 311017 r h arm shoe retainer 311342 flange nut 311011 i centering spring adjuster cable 311323 Lh adjuster lever 311324 r h adjuster lever 311325 adjuster spring 311326 Lh adjuster assembly 311327 r h adjuster assembly 311364 dust shield 311352 brake mountin 316027 wire grommet 311367 adjuster clip thread end 311368 adjuster clip barrel end 311353 brake mounting nut 311354 brake mounting lockwasher 311518 return spring 866 397 8481 Fax 1 320 693 5703 Page 19 www bigtowtrailers com Item Part 31 1102 10K Hydraulic Brake 12 1 4 x 4 Used on these models B 10 B 10T Lh brake assembly 31 1104 r h brake assembly 31 1116 brake dust shield two piece 31 1120 bleeder screw quantity 4 31 1118 wheel cylinder rebuild kit 1 250 bore 31 1106 shoe and lining one wheel I h 31 1108 shoe and lining one wheel r h 31 1110 shoe hold down kit 31 1112 shoe return spring 31 1114 31 1021 31 1023 31 1124 31 1019 adjuster cable and retainer 14 long
42. agnet kit centering spring adjuster cable 311323 lh adjuster lever 311324 r h adjuster lever 311325 adjuster spring 311326 lh adjuster assembly 311327 r h adjuster assembly 311363 dust shield 311352 brake mounting screw 316027 wire grommet 311367 adjuster clip thread end 311368 adjuster clip barrel end 311353 brake mounting nut 311354 brake mounting lockwasher 311518 return spring 866 397 8481 Fax 1 320 693 5703 Page 17 www bigtowtrailers com 9K 10K General Duty Hydraulic Brake 12 1 4 x 3 3 8 Used on these models BE 9 BE 10 B 9 Item Part 31 1402 Lh brake assembly 31 1404 r h brake assembly 31 1416 brake dust shield two piece 31 1120 bleeder screw quantity 4 31 1118 wheel cylinder rebuild kit 1 250 bore 31 1406 shoe and lining one wheel 31 1408 shoe and lining one wheel r h 31 1110 shoe hold down kit 31 1112 shoe return spring 31 1114 adjuster cable and retainer 14 long 31 1021 31 1023 31 1124 31 1019 adjuster lever and spring l h adjuster lever and spring r h piston stop bar adjuster spring 31 1122 cylinder push rod quantity 4 866 397 8481 Fax 1 320 693 5703 Page 18 www bigtowtrailers com 10K Electric Brake 12 1 4 x 4
43. arrel end 311367 adjuster clip thread end 311330 brake mounting nut 311331 brake mounting lockwasher 866 397 8481 Fax 1 320 693 5703 Page 15 www bigtowtrailers com 8K Hydraulic Brake 12 1 4 x 3 3 8 Used on these models B 8DO Item Description 31 0802 Lh brake assembly 4 bolt 31 0804 r h brake assembly 4 bolt 31 0816 brake dust shield two piece 31 1120 bleeder screw quantity 4 31 1118 wheel cylinder rebuild kit 1 250 bore 31 1406 shoe and lining one wheel I h 31 1408 shoe and lining one wheel r h 31 1110 shoe hold down kit 31 1112 shoe return spring 31 1114 adjuster cable and retainer 14 long 31 1021 adjuster lever and spring l h adjuster lever and spring r h piston stop bar 31 1019 adjuster spring 31 1122 cylinder push rod quantity 4 866 397 8481 Fax 1 320 693 5703 Page 16 www bigtowtrailers com 9K 10K General Duty Electric Brake 12 1 4 x 3 3 8 Used on these models BE 9 BE 10 B 9 Item Description 310929c Lh brake assembly 7 bolt 310931c r h brake assembly 7 bolt 310903c Lh shoe and lining kit 310901c r h shoe and lining kit 311007 lh actuator arm assembly 311009 r h actuator arm assembly 311015 arm shoe retainer 311017 r h arm shoe retainer 311342 flange nut 311011 m
44. ast once a month including the spare Inspect tires for uneven wear patterns on the tread cracks foreign objects or other signs of wear or trauma Remove bits of glass and foreign objects wedged in the tread Make sure your tire valves have valve caps Check tire pressure before going on a long trip Do not overload your vehicle Check the Tire Information and Loading Placard or User s Manual for the maximum recommended load for the vehicle More information may be found at http www natm com 866 397 8481 Fax 1 320 693 5703 Page 47 www bigtowtrailers com Item 01 0062 8 mounting bracket 2 x 2 angle iron 01 0063 8 mounting bracket 5 x 3 angle iron 06 1696 8 mounting bracket 5 x 3 formed 06 1690 special mounting bracket 5 x 3 25K jacks 33 5031 jack handle 33 5045 jack handle 33 5037 12K drop leg jack only long side wind 33 5033 12K drop leg jack with 6 angle iron brackets side wind 33 5035 12K drop leg jack with 8 angle iron brackets side wind 33 5051 plastic replacement top only with bolts for 25K ost jack 33 5049 25K 2 speed jack 33 5047 25K 2 speed jack with 2 x 2 x 8 long angle iron brackets 8 33 5032 25K J ack Foot 9 33 5050 25K Single speed jack 33 5064 25K Single speed jack with 2 x 2 x 8 long angle iron brackets 33 5065 25K Single speed jack with 5 x 3 x 8 long angle iron brackets 866
45. d 41 1 2 ramp hold up angle 070076 ramp hold up pin on beavertail 070193 cylinder pin 062039 lower cylinder mount 063440 Hold up bar not shown 1 866 397 8481 Fax 1 320 693 5703 Page 62 www bigtowtrailers com Hydraulic Ramps CENTER LOWER CYLINDER MOUNT ON MAIN RAILS ALIGN WITH LOWER CYLINDER MOUNTS TOP CYLINDER MOUNT MUST 1 866 397 8481 Fax 1 320 693 5703 Page 63 www bigtowtrailers com 5 E gt lt YAGNITAD LOAId Nid 861020 LOAld 3AVMJ H Nid 861070 149 3AVMJ H Nid v 10 0 404 350 GAH diVid 1 235 v GAH ZL x 2 1 4 AND 0 19 S1c9 806026 8X2 AD 01 07 9 2 1 2 21 X e A v 6060 2 106026 ling TAD dod 149 14 L108 w201Nn 149 350 201815 0218 6 Q0M 4201Nn 201 350 LING 3WvHJ H SV 350 8116 6 9118 6 43 0 SSOMO 1 0 1 0104 v 3SOH QN3 QOJ NI 0104 V 3S0H CLIGLE QN3 GON 331 OL 3AlVA NI 1 1 0104 0118 6 QN3 LING
46. e 35 0404 90 deg elbow comp fitting 35 0400 i 35 0015 3 8 plug square head brass one each end of tank 35 0178 ecu valve assembly 2s 2m 35 0033 90 deg elbow 1 4 pipe 3 8 tube 35 0028 3 8 street elbow 35 0008 3 8 brass branch tee 35 0031 3 8 straight male connector 3 8 pipe 3 8 tube 35 0183 ing brake valve 35 0101 3 8 air brake hose 24 specify lengths and 35 0107 3 8 air brake hose 32 quantity needed hoses 35 0102 3 8 air brake hose 44 will vary with different 35 0103 3 8 air brake hose 54 models and deck lengths 35 0100 3 8 air brake hose 97 06 0793 ecu valve mounting bracket 06 2538 air line mounting bracket 35 0034 90 deg male swivel elbow 3 8 pipe 35 0048 pipe tee 35 0126 3 8 hex nipple 39 4212 rubber grommet for air lines not shown 35 0078 rubber pad between air tank and mounting brackets not shown 35 0108 glad hand seal not shown 866 397 8481 Fax 1 320 693 5703 Page 30 www bigtowtrailers com Air System 4S 2M Used on these models BE 10 BE 12 B 10 B 10LP B 10T B 12 B 12LP B 12T B 20 B 20LP B 20T B 25 B 25LP B 25RG B 25T B 25RGHT B 35RG B 35RGHT For identification of all air system fittings See page 34 Item Part 35 0136 blue 3 8 nylon air brake tubing 35 0156 red 3 8 nylon air brake tubing 06 0922 air tank moun
47. e 3 4 components 29 1030 29 1025 5 leaf slipper spring with bronze bushing new style 7 8 components replacement spring eye bushing 29 1007 spring eye bolt 3 4 x 4 1 2 old style 29 1032 spring eye bolt 7 8 x 4 1 2 new style 29 1009 spring eye lock nut 3 4 old style 29 1034 spring eye lock nut 7 8 new style 29 1023 u bolt with self locking nuts 29 1027 u bolt plate 866 397 8481 Fax 1 320 693 5703 Page 26 www bigtowtrailers com Used on these models BE 10 air BE 10 hydraulic BE 12 Item Part 23 0029 Slipper Spring Suspension 10k axle with hubs springs brakes air non abs 23 0029A 10k axle with hubs springs brakes air w abs 23 0027 10k axle with hubs springs brakes hyd 23 0024 12k axle with hubs springs brakes elec 23 0021 12k axle with hubs springs brakes air non abs 23 0021A 12k axle with hubs springs brakes air w abs 23 0026 12k axle with hubs springs brakes hyd 29 0066 single axle hanger kit includes items 1 3 8 9 10 amp 11 29 0064 multi axle conversion kit 48 1 2 axle spacing includes items 2 4 5 6 8 9 10 amp 11 2 29 1217 center hanger 9 1201 29 1205 ront hanger rear hanger 29 1213 equalizer 29 1215 r h equalizer 29 1219 equalizer bolt 1 1 8 x 6
48. e should be a slight amount of wheel drag at initial adjustment to compensate for any linings irregularities high spot etc B For burnished or broken in brakes back off the slack adjuster to achieve 010 clearance between drum and shoes 3 Apply brakes using normal truck operating pressure Average line pressure should be 90 psi DANGER Use of air pressure in excess of 130 psi could result in failure of the air chamber or spring brake chamber and result in injury A Check the amount of push rod travel Maximum should not exceed 2 for type 30 chambers Optimum push rod travel on a green brake should be under 2 Optimum push rod travel on a burnished or broken in brake should be under 1 3 4 B Check the angle between the slack adjuster and push rod With the brakes applied the angle should be 90 deg 5 deg C With air pressure applied to brakes check for lining to drum contact The contact should approach 10096 Use a 010 feeler gauge if in doubt It should not fit between the lining and drum during brake application D Check to ensure the lining is inside the drum during application More than 06 hanging out of the drum is not recommended 866 397 8481 Fax 1 320 693 5703 Page 78 www bigtowtrailers com Maintenance and Operating Instructions 4 Release air pressure from the brakes and confirm that all brakes release to the normal relaxed position CAUTION The pawl must be removed or di
49. ecurely during testing 866 397 8481 Fax 1 320 693 5703 Page 42 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued 1 4 Tire Safety Everything Rides On It The National Traffic Safety Administration NHTSA has published a brochure DOT HS 809 361 that discusses all aspects of Tire Safety as required by CFR 575 6 This brochure is reproduced in part below It can be obtained and downloaded from NHTSA free of charge from the following web site http www nhtsa dot gov cars rules TireSafety ridesonit tires_index html Studies of tire safety show that maintaining proper tire pressure observing tire and vehicle load limits not carrying more weight in your vehicle than your tires or vehicle can safely handle avoiding road hazards and inspecting tires for cuts slashes and other irregularities are the most important things you can do to avoid tire failure such as tread separation or blowout and flat tires These actions along with other care and maintenance activities can also Improve vehicle handling Help protect you and others from avoidable breakdowns and accidents Improve fuel economy Increase the life of your tires This area presents a comprehensive overview of tire safety including information on the following topics Basic tire maintenance Uniform Tire Quality Grading System Fundamental characteristics of tires Tire safety tips Use this informatio
50. ehicle Understanding this flexibility will allow you the owner to make choices that fit your travel needs When loading your cargo be sure it is distributed evenly to prevent overloading front to back and side to side Heavy items should be placed low and as close to the axle positions as reasonable Too many items on one side may overload a tire The best way to know the actual weight of the vehicle is to weigh it at a public scale Talk to your dealer to discuss the weighing methods needed to capture the various weights related to the trailer This would include the weight empty or unloaded weights per axle wheel hitch or king pin and total weight Excessive loads and or underinflation cause tire overloading and as a result abnormal tire flexing occurs This situation can generate an excessive amount of heat within the tire Excessive heat may lead to tire failure It is the air pressure that enables a tire to support the load so proper inflation is critical The proper air pressure may be found on the certification VIN label and or on the Tire Placard This value should never exceed the maximum cold inflation pressure stamped on the tire 1 1 1 Trailers 10 000 Pounds GVWR or Less 9 TIRE AND LOADING INFORMATION Ibs The weight of cargo should never exceed kg manual for _ information 45 XXXX 1 Locate the statement The weight of cargo should never exceed XXX kg or XXX lbs on you
51. ertification tag on the trailer tongue lists the Gross Axle Weight Rating GAWR which is the maximum total weight allowed on the axles tires Total axle tire weight allowed is the GAWR times the number of axles The tag also lists the GVWR The required hitch weight at full load is the difference of the GVWR and the sum of the GAWR s Payload capacity will also be reduced by the addition of any options or changes that increase the trailer weight When selecting a trailer always allow a capacity safety margin to account for non uniform loading growth in load and accessories weight and the multitude of other unforeseen circumstances that occur in equipment transportation 866 397 8481 Fax 1 320 693 5703 Page 67 www bigtowtrailers com Towing Tips and Check List Know and follow all state local D O T towing and tie down laws that pertain to the load trailer combination that is to be towed If you have any questions contact your local law enforcement or D O T before towing OK NO Check over all condition of trailer tie downs ramps hitch for proper operation Make sure the trailer coupler and towing coupler are the same size and proper capacity Back tow vehicle up to trailer and hook up Using a spotter is the easiest method B Trailer must be connected to tow vehicle before loading or unloading L Lock tow vehicle brakes before loading and unloading trailer and use chock block
52. esigned for use only with 2 thick boards so the use of thicker boards and or loading practices that disregard these recommendations may result in outrigger failures breakage and subsequent equipment damage and personal injury maximum recommended width tracks not to exceed width of trailer tracks 1 866 397 8481 Fax 1 320 693 5703 Page 66 www bigtowtrailers com Payload Ratings ALL PAYLOAD RATINGS ARE AT 55 M P H Trailers are NOT shipped with BRAKE CAB CONTROL equipment Contact our parts department for information on specialized controllers All payload ratings are approximate and will vary slightly with the actual finished trailer weight Please see detail specifications for exact Gross Vehicle Weight Rating GVWR Trailer payload capacity is defined as the GVWR less the actual trailer weight Please note that this payload capacity is a maximum to not be exceeded and may only be achieved when the trailer is carefully loaded so that the hitch bears its full rated load Payload capacity will be reduced if the trailer is loaded such that the hitch bears less than its full rated loading Care should be taken that moving the load back to reduce hitch weight does not overload the axles and tires The c
53. flaps large one pai 3 4 D ring and clip 1 D ring and clip 37 0011 D ring 05 0221 stake pocket 4 1 4 mat l see 05 0222 for 3 16 35 3202 glad hand holder 12 0310 spare wheel tire holder cast wheels 12 0312 spare wheel tire holder 10 bolt budd wheels 12 0472 spare wheel tire holder 8 bolt hub piloted 06 0737 hubodometer mounting bracket 6 bolt hubs only 37 5011 hubodometer 37 6072 registration holder large 12 6078 spare tire mount B 10 12 5132 spare tire mount B 8DO 06 0140 tool box lid 14 25 x 34 B 15 B 20 B 35 B 20LP B 25LP 09 1795 tool box lid 14 25 x 24 5 B 10T B 12T 06 0078 tool box lid 14 25 x 26 5 B 20T B 25T BE 12 06 0528 tool box lid 14 25 x 54 B 6 B 8 B 9 3 37 0100 lock hasp toolbox 08 0028 tool box hinge 07 0006 tool box hinge 866 397 8481 Fax 1 320 693 5703 Page 65 www bigtowtrailers com Recommended Outrigger Loadings PROPER LOADING TECHNIQUE Because outriggers Sometimes called swinging side brackets or extension brackets are often used to extend the useful width of the deck by approximately 12 on each side or 24 total the proper loading technique is very important RECOMMENDED PRACTICE It is recommended that the centerline of the vehicle tracks tires or grousers be in line or inboard of the outside edge of the deck CAUTION Outrigger brackets are d
54. g circumferentially around a tire Tread separation Pulling away of the tread from the tire carcass Treadwear indicators TWI The projections within the principal grooves designed to give a visual indication of the degrees of wear of the tread Vehicle capacity weight The rated cargo and luggage load plus 68 kilograms 150 lbs times the vehicle s designated seating capacity Vehicle maximum load on the tire The load on an individual tire that is determined by distributing to each axle its share of the maximum loaded vehicle weight and dividing by two Vehicle normal load on the tire The load on an individual tire that is determined by distributing to each axle its share of the curb weight accessory weight and normal occupant weight distributed in accordance with Table of CRF 49 571 110 and dividing by 2 Weather side The surface area of the rim not covered by the inflated tire Wheel center member In the case of a non pneumatic tire assembly incorporating a wheel a mechanical device which attaches either integrally or separably to the non pneumatic rim and provides the connection between the non pneumatic rim and the vehicle or in the case of a non pneumatic tire assembly not incorporating a wheel a mechanical device which attaches either integrally or separably to the non pneumatic tire and provides the connection between tire and the vehicle Wheel holding fixture The fixture used to hold the wheel and tire assembly s
55. ide of the trailer Actual weight determined by weighing each axle on a public scale with the trailer attached to the towing vehicle Gross Vehicle Weight Rating The maximum weight of the fully loaded trailer as published on the Certification VIN label Actual weight determined by weighing trailer on a public scale without being attached to the towing vehicle Hitch Weight The downward force exerted on the hitch ball by the trailer coupler Innerliner The layer s forming the inside surface of a tubeless tire that contains the inflating medium within the tire Innerliner separation The parting of the innerliner from cord material in the carcass Intended outboard sidewall The sidewall that contains a white wall bears white lettering or bears manufacturer brand and or model name molding that is higher or deeper than the same molding on the other sidewall of the tire or the outward facing sidewall of an asymmetrical tire that has a particular side that must always face outward when mounted on a vehicle Light truck LT tire A tire designated by its manufacturer as primarily intended for use on lightweight trucks or multipurpose passenger vehicles Load rating The maximum load that a tire is rated to carry for a given inflation pressure Maximum load rating The load rating for a tire at the maximum permissible inflation pressure for that tire Maximum permissible inflation pressure The maximum cold inflation pressure to which a
56. ight L E D 39 2740 red marker light L E D 39 3001 tail light mounting grommet 39 3003 tail light standard light 39 2760 tail light L E D 39 3022 tail light mounting grommet 4 1 2 round 39 3016 tail light 4 1 2 round 39 3016A tail light 4 1 2 round L E D 39 3008 license plate i d light pop in style 39 3019 T tri light bar 39 0051 adapter 7 way RV receptacle to 4 way flat 39 0056 adapter 6 way round to 4 way flat 35 0211 plastic battery box for small gel cell sealed battery 35 0203 12V sealed battery 35 0094 Amber reflector non ABS Electric brakes Amber ABS 2 72 round light 866 397 8481 Fax 1 320 693 5703 Page 50 www bigtowtrailers com Brakes pum pw o lt gt i gt x a iring Used on these models MD 10 gt BROWN IN BOTH MD 2 MOLDS 6 TOTAL LENGTH 10 RING TERMINALS QTY 5 EACH PER KIT 397220 7 pole RV nose lead not shown 6 12GA 6 12GA MD9A MD7A MD7A D9 6712 CA40 6 12GA WHT RING JUNCTION BOX 15 AMP BREAKERS 10 RINGS 15x 397130 397132 397134 NOSE LEAD FRONT MAIN MARKER MARKER LEAD NOTE CONNECT ALL WIRES COLOR TO COLOR UNLESS OTHERWISED SPECIFIED n a n a N
57. ke 12 1 4 x 5 Used on these models BE 12 B 10LP B 12 B 12LP B 12T Item Part 31 1302 Lh brake assembly 31 1304 r h brake assembly 31 1316 brake dust shield two piece 31 1120 bleeder screw quantity 4 31 1118 wheel cylinder rebuild kit 1 250 bore 31 1306 shoe and lining one wheel 31 1308 shoe and lining one wheel r h 31 1110 shoe hold down kit 31 1112 shoe return spring 31 1114 adjuster cable and retainer 14 long 31 1021 adjuster lever and spring l h adjuster lever and spring r h piston stop bar 31 1019 adjuster spring 31 1122 cylinder push rod quantity 4 866 397 8481 Fax 1 320 693 5703 Page 22 www bigtowtrailers com 10K 12K 22 5K 25K Air Brake 12 1 4 4 12 1 4 x 5 12 1 4 x 7 1 2 Used on these models BE 10 BE 12 B 10 B 10LP B 10T B 12 B 12LP B 12T B 20 B 20LP B 20T B 25 B 25LP B 25RG B 25T B 25RGHT B 35RG B 35RGHT WARNING The pawl must be removed or disengaged before you turn the manual adjusting nut or you will damage the pawl teeth Damaged teeth prevent automatic adjustment and require that you regularly adjust the brake manually New style slanted slack adjuster not shown New style slanted slack adjuster Turn the manual adjusting nut in the direction shown in Figure 1 until the linings touch the drum Then back off the linings by
58. lation pressure This is the inflation pressure provided by the vehicle manufacturer on the Tire Information label and on the Certification VIN tag Reinforced tire A tire designed to operate at higher loads and at higher inflation pressures than the corresponding standard tire Rim A metal support for a tire or a tire and tube assembly upon which the tire beads are seated Rim diameter This means the nominal diameter of the bead seat Rim size designation This means the rim diameter and width 866 397 8481 Fax 1 320 693 5703 Page 41 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued Rim type designation This means the industry of manufacturer s designation for a rim by style or code Rim width This means the nominal distance between rim flanges Section width The linear distance between the exteriors of the sidewalls of an inflated tire excluding elevations due to labeling decoration or protective bands Sidewall That portion of a tire between the tread and bead Sidewall separation The parting of the rubber compound from the cord material in the sidewall Special Trailer ST tire The ST is an indication the tire is for trailer use only Test rim The rim on which a tire is fitted for testing and may be any rim listed as appropriate for use with that tire Tread That portion of a tire that comes into contact with the road Tread rib A tread section runnin
59. mers if a tire defect requires a recall Tire Ply Composition and Materials Used The number of plies indicates the number of layers of rubber coated fabric in the tire In general the greater the number of plies the more weight a tire can support Tire manufacturers also must indicate the materials in the tire which include steel nylon polyester and others Maximum Load Rating This number indicates the maximum load in kilograms and pounds that can be carried by the tire Maximum Permissible Inflation Pressure This number is the greatest amount of air pressure that should ever be put in the tire under normal driving conditions 1 5 9 2 UTQGS Information Treadwear Number This number indicates the tire s wear rate The higher the treadwear number is the longer it should take for the tread to wear down For example a tire graded 400 should last twice as long as a tire graded 200 Traction Letter This letter indicates a tire s ability to stop on wet pavement A higher graded tire should allow you to stop your car on wet roads in a shorter distance than a tire with a lower grade Traction is graded from highest to lowest as AA A Temperature Letter This letter indicates a tire s resistance to heat The temperature grade is for a tire that is inflated properly and not overloaded Excessive speed underinflation or excessive loading either separately or in combination can cause heat build up and possible tire failu
60. n to make tire safety a regular part of your vehicle maintenance routine Recognize that the time you spend is minimal compared with the inconvenience and safety consequences of a flat tire or other tire failure 1 5 Safety First Basic Tire Maintenance Properly maintained tires improve the steering stopping traction and load carrying capability of your vehicle Underinflated tires and overloaded vehicles are a major cause of tire failure Therefore as mentioned above to avoid flat tires and other types of tire failure you should maintain proper tire pressure observe tire and vehicle load limits avoid road hazards and regularly inspect your tires 1 5 1 Finding Your Vehicle s Recommended Tire Pressure and Load Limits Tire information placards and vehicle certification labels contain information on tires and load limits These labels indicate the vehicle manufacturer s information including Recommended tire size Recommended tire inflation pressure Vehicle capacity weight VCW the maximum occupant and cargo weight a vehicle is designed to carry Front and rear gross axle weight ratings GAWR the maximum weight the axle systems are designed to carry Both placards and certification labels are permanently attached to the trailer near the left front 1 5 2 Understanding Tire Pressure and Load Limits Tire inflation pressure is the level of air in the tire that provides it with load carrying capacity and affects the overall pe
61. ng harness of trailer and or tow vehicle A CAUTION KEEP BATTERY CHARGED To ensure proper break away protection check battery regularly for proper charge p n 458206 Warning For hitch extension only DO NOT use for hitch height adjustment Use all mounting bolts to mount to hitch plate For use with hitch extension part numbers 120340 amp 120342 p n 450305 Caution Pallet forks must be secured to trailer while trailer is in motion p n 452800 Caution Pins must be in for transport remove only to operate ramps p n 450291 Caution BREAK A WAY SWITCH IS FOR EMERGENCY USE ONLY Pulling break a way switch lead while trailer electrical plug is connected to the truck receptacle or pulling break a way switch lead for use as a park brake will cause severe damage to wiring harness of trailer and or tow vehicle p n 450280 Caution KEEP BATTERY CHARGED To ensure proper break a way protection check battery regularly for proper charge 866 397 8481 Fax 1 320 693 5703 Page 72 www bigtowtrailers com Decals Warnings and Cautions p n 450052 1 red white reflectorized tape p n 450050 2 red white reflectorized tape p n 450274 p n 450285 If the Waming Lamp Comes ON and Stays ON When You Apply the Brakes NON LOAD to a Moving Vehicle BEARING SERVICE THE ABS Rockw ell WABCO p n 450037A 5 x 26 decal ZEE AVETE E p n 455000 866 397 8481
62. on all tires because it is not required by law M S The M S or M S indicates that the tire has some mud and snow capability Most radial tires have these markings hence they have some mud and snow capability 866 397 8481 Fax 1 320 693 5703 Page 45 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued Speed Rating The speed rating denotes the speed at which a tire is designed to be driven for extended periods of time The ratings range from 99 miles per hour mph to 186 mph These ratings are listed below Note You may not find this information on all tires because it is not required by law Letter Rating Speed Rating Q 99 mph 106 mph 112 mph 118 mph 124 mph 130 mph 149 mph 168 mph Y 186 mph For tires with a maximum speed capability over 149 mph tire manufacturers sometimes use the letters ZR For those with a maximum speed capability over 186 mph tire manufacturers always use the letters ZR U S DOT Tire Identification Number This begins with the letters DOT and indicates that the tire meets all federal standards The next two numbers or letters are the plant code where it was manufactured and the last four numbers represent the week and year the tire was built For example the numbers 3197 means the 31st week of 1997 The other numbers are marketing codes used at the manufacturer s discretion This information is used to contact consu
63. oved from the rim to be properly inspected before being plugged and patched 1 5 9 Tire Fundamentals Federal law requires tire manufacturers to place standardized information on the sidewall of all tires This information identifies and describes the fundamental characteristics of the tire and also provides a tire identification number for safety standard certification and in case of a recall 1 5 9 1 Information on Passenger Vehicle Tires The indicates the tire is for passenger vehicles Next number This three digit number gives the width in millimeters of the tire from sidewall edge to sidewall edge In general the larger the number the wider the tire Next number This two digit number known as the aspect ratio gives the tire s ratio of height to width Numbers of 70 or lower indicate a short sidewall for improved steering response and better overall handling on dry pavement R The R stands for radial Radial ply construction of tires has been the industry standard for the past 20 years Next number This two digit number is the wheel or rim diameter in inches If you change your wheel size you will have to purchase new tires to match the new wheel diameter Next number This two or three digit number is the tire s load index It is a measurement of how much weight each tire can support You may find this information in your owner s manual If not contact a local tire dealer Note You may not find this information
64. port bolt in lower position whenever possible Tighten nuts on both bolts until lock washers are fully compressed Do not use tow ring with a hitch which is excessively loose or that binds when trailer turns Double nut lower bolts BRAKE CONTROLLER Check controller daily for proper operation both automatic with tow vehicle foot pedal and manually Replace if defective or damaged Adjust for proper braking effect for load being towed Trailer braking should be adjusted so that trailer brakes react and apply at the same time as tow vehicle brakes come on never after tow vehicle brakes 866 397 8481 Fax 1 320 693 5703 Page 76 www bigtowtrailers com Maintenance and Operating Instructions MAGNETS Check at any indication of braking problems at brake replacement at bearing inspection or any time a hub is pulled Magnets should be replaced if bare wire is showing at wear surface surface of magnet is gouged scored or magnet is worn unevenly BRAKE CLEANING INSPECTION Your trailer brakes must be inspected and serviced at yearly intervals or more often as use and performance requires Magnets and shoes must be changed when they become worn or scored thereby preventing adequate vehicle braking Clean the backing plate magnet arm magnet and brake shoes Make certain that all the parts removed are replaced in the same brake and drum assembly Inspect the magnet arm for any loose or worn parts Check shoe return springs hold
65. pressure to each tire that is underinflated Step 6 Check all the tires to make sure they have the same air pressure except in cases in which the front and rear tires are supposed to have different amounts of pressure If you have been driving your vehicle and think that a tire is underinflated fill it to the recommended cold inflation pressure indicated on your vehicle s tire information placard or certification label While your tire may still be slightly underinflated due to the extra pounds of pressure in the warm tire it is safer to drive with air pressure that is slightly lower than the vehicle manufacturer s recommended cold inflation pressure than to drive with a significantly underinflated tire Since this is a temporary fix don t forget to recheck and adjust the tire s pressure when you can obtain a cold reading 1 5 5 Tire Size To maintain tire safety purchase new tires that are the same size as the vehicle s original tires or another size recommended by the manufacturer Look at the tire information placard the owner s manual or the sidewall of the tire you are replacing to find this information If you have any doubt about the correct size to choose consult with the tire dealer 866 397 8481 Fax 1 320 693 5703 Page 44 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued 1 5 6 Tire Tread The tire tread provides the gripping action and traction that prevent your vehicle f
66. r grommet for air lines not shown 35 0078 rubber pad between air tank and mounting brackets not shown 35 0108 866 397 8481 glad hand seal not shown Fax 1 320 693 5703 Page 31 www bigtowtrailers com Air System Used on these models B 25T B 25 B 25LP bottom side bottom side of tank of tank Air lines to front of trailer A 27 27 abs 64 48 For identification of all system fittings See page 34 Item 35 0136 blue 3 8 nylon air brake tubing 35 0156 red 3 8 nylon air brake tubing 06 0922 air tank mounting bracket 35 0086 air tank 4307 cu in 35 0104R 3 8 air brake hose assembly with red glad hand 35 0052 glad hand only emergency red 35 0109 screen glad hand 35 0104B 3 8 air brake hose assembly with blue glad hand 35 0050 glad hand only service blue 35 0070 drain valve with 5 pull cable 35 0404 90 deg elbow comp fitting 1 npt pipe x 3 4 hose 35 0112 3 4 synflex air brake hose straight comp fitting 1 npt pi 35 0015 3 8 plug square head brass one each end of tank 35 0173 ecu valve assembly 4s 2m 35 0177 ecu valve assembly 2s 1m 35 0033 90 deg elbow 1 4 pipe 3 8 tube 35 0028 3 8 street elbow 35 0008 3 8 brass branch tee 35 0031 3 8 straight male connector 3 8 pipe 3 8 tube 35 0183 spring brake valve 35 0101 3 8 air brake hose 24 specify lengths and 35 0107 3 8 air brake hose
67. r vehicle s placard See figure 1 1 2 This figure equals the available amount of cargo and luggage load capacity 3 Determine the combined weight of luggage and cargo being loaded on the vehicle That weight may not safely exceed the available cargo and luggage load capacity The trailer s placard refers to the Tire Information Placard attached adjacent to or near the trailer s VIN Certification label at the left front of the trailer 1 1 2 Trailers Over 10 000 Pounds GVWR Note These trailers are not required to have a tire information placard on the vehicle 1 Determine the empty weight of your trailer by weighing the trailer using a public scale or other means This step does not have to be repeated 2 Locate the GVWR Gross Vehicle Weight Rating of the trailer on your trailer s VIN Certification label 3 Subtract the empty weight of your trailer from the GVWR stated on the VIN label That weight is the maximum available cargo capacity of the trailer and may not be safely exceeded 866 397 8481 Fax 1 320 693 5703 Page 38 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued 1 2 Steps for Determining Correct Load Limit Tow Vehicle 1 Locate the statement The combined weight of occupants and cargo should never exceed Ibs on your vehicle s placard 2 Determine the combined weight of the driver and passengers who will be riding in your vehicle 3 S
68. re From highest to lowest a tire s resistance to heat is graded as A B or C 866 397 8481 Fax 1 320 693 5703 Page 46 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued 1 5 9 3 Additional Information on Light Truck Tires Please refer to the following diagram Load Range Severe snow Light Truck line Maximum load and inflation information and load inflation limits Tires for light trucks have other markings besides those found on the sidewalls of passenger tires LT The LT indicates the tire is for light trucks or trailers ST ST is an indication the tire is for trailer use only Max Load Dual kg Ibs at kPa psi Cold This information indicates the maximum load and tire pressure when the tire is used as a dual that is when four tires are put on each rear axle a total of six or more tires on the vehicle Max Load Single kg Ibs at kPa psi Cold This information indicates the maximum load and tire pressure when the tire is used as a single Load Range This information identifies the tire s load carrying capabilities and its inflation limits 1 6 Tire Safety Tips Preventing Tire Damage Slow down if you have to go over a pothole or other object in the road Do not run over curbs or other foreign objects in the roadway and try not to strike the curb when parking Tire Safety Checklist Check tire pressure regularly at le
69. rformance of the vehicle The tire inflation pressure is a number that indicates the amount of air pressure measured in pounds per square inch psi a tire requires to be properly inflated You will also find this number on the vehicle information placard expressed in kilopascals kpa which is the metric measure used internationally 866 397 8481 Fax 1 320 693 5703 Page 43 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued Manufacturers of passenger vehicles and light trucks determine this number based on the vehicle s design load limit that is the greatest amount of weight a vehicle can safely carry and the vehicle s tire size The proper tire pressure for your vehicle is referred to as the recommended cold inflation pressure As you will read below it is difficult to obtain the recommended tire pressure if your tires are not cold Because tires are designed to be used on more than one type of vehicle tire manufacturers list the maximum permissible inflation pressure on the tire sidewall This number is the greatest amount of air pressure that should ever be put in the tire under normal driving conditions 1 5 3 Checking Tire Pressure It is important to check your vehicle s tire pressure at least once a month for the following reasons Most tires may naturally lose air over time Tires can lose air suddenly if you drive over a pothole or other object or if you strike the curb
70. rom slipping or sliding especially when the road is wet or icy In general tires are not safe and should be replaced when the tread is worn down to 1 16 of an inch Tires have built in treadwear indicators that let you know when it is time to replace your tires These indicators are raised sections spaced intermittently in the bottom of the tread grooves When they appear even with the outside of the tread it is time to replace your tires Another method for checking tread depth is to place a penny in the tread with Lincoln s head upside down and facing you If you can see the top of Lincoln s head you are ready for new tires 1 5 7 Tire Balance and Wheel Alignment To avoid vibration or shaking of the vehicle when a tire rotates the tire must be properly balanced This balance is achieved by positioning weights on the wheel to counterbalance heavy spots on the wheel and tire assembly A wheel alignment adjusts the angles of the wheels so that they are positioned correctly relative to the vehicle s frame This adjustment maximizes the life of your tires These adjustments require special equipment and should be performed by a qualified technician 1 5 8 Tire Repair The proper repair of a punctured tire requires a plug for the hole and a patch for the area inside the tire that surrounds the puncture hole Punctures through the tread can be repaired if they are not too large but punctures to the sidewall should not be repaired Tires must be rem
71. s After connected to tow vehicle make sure trailer is level or slightly higher in front adjust as needed ni B Attach safety chains cross them electrical plug and break a way switch electric brakes and make sure they are not dragging mi Check for proper tire pressure on trailer and tow vehicle E m Check all lighting on trailer and tow vehicle for proper operation Adjust brake controller electric brakes as necessary for proper braking Make sure running lights are on mi Make sure deck is clear of all debris before loading before heading out onto the road Secure cargo or equipment to trailer secure load on all 4 corners if possible do not over tighten binders Secure all loading ramps deck latches tilt models and make sure jack stand is in up position and stow chock blocks E After traveling a short distance stop and check to see if your load is secure and that all tie downs are tight ug Allow for greater braking distance when pulling a trailer and generally travel at slower speeds 866 397 8481 Fax 1 320 693 5703 Page 68 www bigtowtrailers com Decals Warnings and Cautions For complete decal kits please specify trailer model deck length and paint color Decal Kits Partnumber Model 45 1780 B 10T 45 1785 B 12T 45 1790 B 20T 45 1795 B 25T 45 1770 BE 10 45 1775 BE 12 45 1665 B 8DO 45 1720 B 9 45 1765 B 5LS 45 1766 B 6LS 45 1767
72. sed authority of Dexter Axle but Dexter Axle is not responsible for the accuracy of the information contained herein Big Tow piri Big Tow Dependability Em ployee Owned American Made Big Tow trailers U S Hwy 12 Litchfield MN 55355 866 397 8481 Parts Dept Fax 320 693 5703 www bigtowtrailers com Big Tow Trailers has a complete line of trailers small pans and tilts M anufacturer reserves the right to modify w ithout notice specific designs and specifications as deemed advisable on the trailers described drop deck trailers deck over models large tilts and detachable herein w ithout obligation in regards to trailers previously sold The manufacturer also reserves the right to discontinue any model or models gooseneck trailers See your Big Tow Trailers dealer or visit the w ithout obligation in regards to trailers previously sold Written w arranty covers each trailer No other w arranty expressed or implied is made w ebsite for more information Warranty on tires and brakes through original manufacturer All dimensions approximate 47 4501 03 2006
73. sengaged before you turn the manual adjusting nut or you will damage the pawl teeth Damaged teeth prevent automatic adjustment and require that you regularly adjust the brake manually See page 5 CAUTION Failure to properly adjust brakes could cause reduced braking performance BRAKE ASSEMBLY DISASSEMBLY PRECAUTIONS Although Dexter Axle supplies non asbestos brake linings as standard equipment asbestos linings may still be found on axles in service DANGER Asbestos brake linings contain asbestos fibers Breathing asbestos dust may be hazardous to your health and may cause serious respiratory or other bodily harm AVOID CREATING DUST Do not remove work on brake drums or replace brake linings without proper protective equipment Do not remove work on brake drums or replace brake linings without proper protective equipment Do not attempt to sand grind chisel file hammer or alter brake linings in any manner without proper protective equipment Follow O S H A standards for proper protective devices to be used when working with asbestos materials DANGER Excessive pounding on anchor pins or cam roller pins to remove or install them can damage the pins and cause misalignment of the brake spiders and brake shoes The use of a soft hammer or brass drift is recommended to remove or install the anchor pins if necessary DANGER To insure your safety itis critical that any brake drum reaching maximum wear diame
74. sure including a description and explanation of A Cold inflation pressure B Vehicle Placard and location on the vehicle C Adverse safety consequences of under inflation including tire failure D Measuring and adjusting air pressure for proper inflation E Tire Care including maintenance and safety practices Vehicle load limits including a description and explanation of the following items A Locating and understanding the load limit information total load capacity and cargo capacity B Calculating total and cargo capacities with varying seating configurations including quantitative examples showing illustrating how the vehicles cargo and luggage capacity decreases as combined number and size of occupants increases This item is also discussed in Section 3 C Determining compatibility of tire and vehicle load capabilities D Adverse safety consequences of overloading on handling and stopping on tires 1 1 Steps for Determining Correct Load Limit Trailer Determining the load limits of a trailer includes more than understanding the load limits of the tires alone On all trailers there is a Federal certification VIN label that is located on the forward half of the left road side of the unit This certification VIN label will indicate the trailer s Gross Vehicle Weight Rating GVWR This is the most weight the fully loaded trailer can weigh It will also provide the Gross Axle Weight Rating GAWR This is the most a par
75. tantially less than 90 degrees to the centerline of the tread Carcass The tire structure except tread and sidewall rubber which when inflated bears the load Chunking The breaking away of pieces of the tread or sidewall Cold inflation pressure The pressure in the tire before you drive Cord The strands forming the plies in the tire Cord separation The parting of cords from adjacent rubber compounds Cracking Any parting within the tread sidewall or inner liner of the tire extending to cord material CT A pneumatic tire with an inverted flange tire and rim system in which the rim is designed with rim flanges pointed radially inward and the tire is designed to fit on the underside of the rim in a manner that encloses the rim flanges inside the air cavity of the tire 866 397 8481 Fax 1 320 693 5703 Page 39 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued Curb weight The weight of a motor vehicle with standard equipment including the maximum capacity of fuel oil and coolant and if so equipped air conditioning and additional weight optional engine Extra load tire A tire designed to operate at higher loads and at higher inflation pressures than the corresponding standard tire Groove The space between two adjacent tread ribs Gross Axle Weight Rating The maximum weight that any axle can support as published on the Certification VIN label on the front left s
76. ter as cast on drum by turning grinding and or wearing be considered unsafe and immediately replaced Any brake drum exceeding this dimension is considered a safety hazard If in doubt contact the brake drum manufacturer WARNING When you work on a spring chamber carefully follow the service instructions of the chamber manufacturer Sudden release of a compressed spring can cause serious personal injury 866 397 8481 Fax 1 320 693 5703 Page 79 www bigtowtrailers com Maintenance and Operating Instructions WARNINGS Be sure trailer is connected to tow vehicle when loading and unloading machinery Lock tow vehicle brakes BEFORE loading and unloading Use wheel chocks when loading or unloading trailer Check tire inflation daily See tire chart Check wheel nuts weekly maintain proper torque Trailer should be level when fully loaded If trailer is low in front when loaded adjust coupler to make level or slightly higher in front Use caution when trailer is being loaded or unloaded DO NOT place hands or feet under ramps when raising or lowering 866 397 8481 Fax 1 320 693 5703 Page 80 www bigtowtrailers com Maintenance Records 866 397 8481 Fax 1 320 693 5703 Page 81 www bigtowtrailers com This page intentionally left blank Page 82 Page 83 Portions of this manual were used with the expres
77. ticular axle can weigh If there are multiple axles the GAWR of each axle will be provided If your trailer has a GVWR of 10 000 pounds or less there is a vehicle placard located in the same location as the certification label described above This placard provides tire and loading information In addition this placard will show a statement regarding maximum cargo capacity Cargo can be added to the trailer up to the maximum weight specified on the placard The combined weight of the cargo is provided as a single number In any case remember the total weight of a fully loaded trailer can not exceed the stated GVWR 866 397 8481 Fax 1 320 693 5703 Page 37 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued 1 1 Steps for Determining Correct Load Limit Trailer continued For trailers with living quarters installed the weight of water and propane also need to be considered The weight of fully filled propane containers is considered part of the weight of the trailer before it is loaded with cargo and is not considered part of the disposable cargo load Water however is a disposable cargo weight and is treated as such If there is a fresh water storage tank of 100 gallons this tank when filled would weigh about 800 pounds If more cargo is being transported water can be off loaded to keep the total amount of cargo added to the vehicle within the limits of the GVWR so as not to overload the v
78. ting bracket 35 0003 3 4 plug square head black 35 0085 air tank 2800 cu in tandem axle 35 0086 air tank 4307 cu in triple axle 35 0104R 3 8 air brake hose assembly with red glad hand 35 0052 glad hand only emergency red 35 0109 screen glad hand 35 0104B 3 8 air brake hose assembly with blue glad hand 35 0050 glad hand only service blue 35 0070 35 0404 35 0400 drain valve with 5 pull cable elbow comp fitti ipe x 3 4 hose 3 4 synflex air brake hose straight comp fitting 1 npt pipe x 3 4 hose 35 0015 3 8 plug square head brass one each end of tank 35 0173 ecu valve assembly 4s 2m 35 0033 90 deg elbow 1 4 pipe 3 8 tube 35 0028 3 8 street elbow 35 0008 3 8 brass branch tee 35 0031 35 0183 3 8 straight male connector 3 8 pipe 3 8 tube spring brake valve 35 0101 3 8 air brake hose 24 specify lengths and 35 0107 3 8 air brake hose 32 quantity needed hoses 35 0102 3 8 air brake hose 44 will vary with different 35 0103 3 8 air brake hose 54 models and deck lengths 35 0100 3 8 air brake hose 97 06 0793 ecu valve mounting bracket 06 2538 air line mounting bracket 35 0034 90 deg male swivel elbow 3 8 pipe 35 0048 pipe tee 35 0126 3 8 hex nipple 39 4212 rubbe
79. tire may be inflated Maximum loaded vehicle weight The sum of curb weight accessory weight vehicle capacity weight and production options weight Measuring rim The rim on which a tire is fitted for physical dimension requirements Pin Weight The downward force applied to the 5th wheel or gooseneck ball by the trailer kingpin or gooseneck coupler Non pneumatic rim A mechanical device which when a non pneumatic tire assembly incorporates a wheel supports the tire and attaches either integrally or separably to the wheel center member and upon which the tire is attached Non pneumatic spare tire assembly A non pneumatic tire assembly intended for temporary use in place of one of the pneumatic tires and rims that are fitted to a passenger car in compliance with the requirements of this standard 866 397 8481 Fax 1 320 693 5703 Page 40 www bigtowtrailers com GVWR and TIRE SAFETY INFORMATION Tire and Safety Information Continued Non pneumatic tire mechanical device which transmits either directly or through a wheel or wheel center member the vertical load and tractive forces from the roadway to the vehicle generates the tractive forces that provide the directional control of the vehicle and does not rely on the containment of any gas or fluid for providing those functions Non pneumatic tire assembly A non pneumatic tire alone or in combination with a wheel or wheel center member which can be mounted on a vehicle
80. tuming the nut in the opposite direction 1 2 turn for drum brakes WARNING When you work on spring chamber carefully follow the service instructions of the chamber manufacturer Sudden release of a compressed spring can cause serious personal injury WARNING All park brake chambers must be uncaged with axles equipped with park brake before putting trailer into service 31 4010 shoe w lining 12 1 4 x 4 31 4015 shoe w lining 12 1 4 x 5 31 4020 shoe w lining 12 1 4 x 7 1 2 31 4002 camshaft repair kit 31 4004 brake shoe repair kit 31 4555 air chamber park type 24 24 31 4535 air chamber park type 24 30 31 4515 air chamber park type 30 30 31 4550 air chamber service type 20 31 4530 air chamber service type 24 31 4510 air chamber service type 30 31 4560 replacement rubber diaphram for 31 4550 type 20 31 4540 replacement rubber diaphram for 31 4530 type 24 31 4520 replacement rubber diaphram for 31 4510 type 30 31 4505 slack adjuster for 12 1 4 air brakes 866 397 8481 Fax 1 320 693 5703 Page 23 www bigtowtrailers com Slipper Spring Suspension Used on these models B 8DO Item 29 3805 single axle hanger kit includes items 1 3 8 9 10 amp 11 29 3810 multi axle conversion kit 36 axle spacing includes items 2 4 5 6 8 9 10 amp 11 29 3851 front hanger 29 3853
81. ub and drum non ABS 25 2021 amp 25 2023 hub and drum ABS 25 2022 amp 25 2023 bearing cone inner 25 2029 inner race 25 2031 oil seal 25 2035 brake drum bolt 37 5011 hubodometer 25 2004 oil cap for hubodometer 06 0745 1 2 3 4 5 6 7 8 866 397 8481 Fax 1 320 693 5703 Page 10 www bigtowtrailers com 22 5K 25K Budd Hub and Drum Used on these models B 20T B 25T B 20 B 20LP B 25 B 25LP B 25RG B 25RGHT B 35RG B 35RGHT Item 25 2047 hub and drum complete non ABS 25 2048 hub and drum complete I h ABS w tone ring 25 2049 hub and drum complete r h non ABS 25 2050 hub and drum complete r h ABS w tone ring 25 2003 oil cap 25 2005 oil cap seal 25 2007 spindle nut outer 25 2009 Spindle nut star washer 25 2011 Spindle nut lock washer 25 2013 spindle nut inner 25 2015 bearing cone outer outer race budd hub only non ABS budd hub only r h non ABS budd hub only I h for ABS with tone ring budd hub only r h for ABS with tone ring budd drum only stud Ih stud r h bearing cone inner inner race 25 2031 oil seal 37 5011 hubodometer 25 2004 oil cap for hubodometer 06 0745 866 397 8481 Fax 1 320 693 5703 Page 11 www bigtowtrailers com 22 5K 25K 8
82. ubtract the combined weight of the driver and passengers from XXX kilograms or XXX pounds 4 The resulting figure equals the available amount of cargo and luggage capacity For example if the XXX amount equals 1400 Ibs and there will be five 150 lb passengers in your vehicle the amount of available cargo and luggage capacity is 650 Ibs 1400 750 5 x 150 650 Ibs 5 Determine the combined weight of luggage and cargo being loaded on the vehicle That weight may not safely exceed the available cargo and luggage capacity calculated in Step 4 6 If your vehicle will be towing a trailer load from your trailer will be transferred to your vehicle Consult the tow vehicle s manual to determine how this weight transfer reduces the available cargo and luggage capacity of your vehicle 1 3 Glossary Of Tire Terminology Accessory weight The combined weight in excess of those standard items which may be replaced of automatic transmission power steering power brakes power windows power seats radio and heater to the extent that these items are available as factory installed equipment whether installed or not Bead The part of the tire that is made of steel wires wrapped or reinforced by ply cords and that is shaped to fit the rim Bead separation This is the breakdown of the bond between components in the bead Bias ply tire A pneumatic tire in which the ply cords that extend to the beads are laid at alternate angles subs

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