RAR-260 Owner`s Manual
Contents
1. 5340038 END CAP ASSY PLUNGER ASSEMBLY 1 5 8360009 NUTALLTHREADASSY 1 TEM SHOWN FOR REFERENCE ON LY NOT INCLUDED WITH BUSHING INSTALLATION TOOL 6100051 BUSHING ORIENTATION 11 2 RAR 260 Trailer Air Ride Owner s Manual Bushing Replacement Procedure RAR 260 Yoke Suspension 1 E 28 B 10 I 12 13 12 Raise and safely block up trailer and axle Remove wheels and tires Remove shock absorbers from suspension Deflate air springs and if necessary disconnect air control valve linkage Remove pivot nuts and bolts Rotate trailing arm beams down and away from trailer frames Inspect trailing arm pivot holes and bushing sleeve surfaces for unusual wear or damage Repair or replace components as required Remove bushing assembly from bushing sleeve by grinding away the four welds on each end Install and center new bushing assembly into each bushing sleeve in frame Position slot and seam per Figure 5 Weld one inch long at four places both sides equally spaced Allow steel to cool between welds to prevent damaging the bond between the rubber bushing and steel sleeve Also stagger welds to prevent heat build up and distortion by welding top of sleeve at outboard side of frame then bottom of sleeve at inboard side of frame and moving around the sleeve in 90 increments Re assemble beams to frames with new UHMW polyethylene wea2. 14 17 Mauteminte 18 jura 18 Pre Installation Notes 1 Suspensions are designed to operate within specific parameters Operating the suspension outside the design parameters may result in improper performance damaged equipment and voiding of the warranty 2 The total operating capacity of a suspension running gear system is determined by the component with the lowest load rating Please consult with the manufacturers of axles brakes tires and wheels to determine the maximum suspension system capacity 3 installer 15 responsible for ensuring that air volume requirements are met Consult Federal Motor Vehicle Safety Standards 55 121 for more information 4 Welding or altering suspension components is not permitted except where explicitly stated by Ridewell Corporation CHART 1 2 RAR 260 Trailer Air Ride Owner s Manual TIRE LOADED RADIUS Configuration bes Radius 215 76H17 5 The Ridewell model RAR 260 suspension is designed to accommodate a range of ride heights for each specific model and can be used on variety of axle types for various applications Ihe following characteristics are 15 commonly referenced for set up of the suspension 15 5 PEE 1 Ride Height also called Mounting Height Ihe distance ME from the bottom of the trailer frame to the centerline of
3. 11 Apply Seagull Type lubricant to the new bushing outer diameter inside the beam eye and inside the cone This lubricant is included in the bushing replacement kit do not substitute 12 Reassemble the bushing installation tool as shown in the Installation portion of Figure 4 and ensure that the tool is squarely seated on the beam eye Align the locator mark on the new bushing with the reference line drawn on the beam Install the new bushing by rotating the hex nut of the threaded rod with an impact wrench prevent the plunger assembly from rotating by holding its hex nut with an open end wrench 13 Remove the bushing installation tool and ensure that the bushing is centered in the beam eye 14 Re assemble beams to hangers with new UHMW polyethylene wear washers and pivot sizing washers 15 Align bushing sleeves to hanger alignment slots and install new pivot bolts washers and nuts DO NOT REUSE SHEAR TYPE PIVOT BOLTS 16 Ly 18 19 RAR 260 Trailer Air Ride Owner s Manual e Align axle and torque pivot bolts per the Axle Alignment Procedure Re install shock absorbers Re install wheels and tires If necessary re connect air control valve linkage and adjust ride height per the Extreme Air Height Control Valve and Operations Guide Figure 4 _ VAL LLLA DESCRIPTION QTY BEAM BUSHING EYE mur
4. See service manual for details or call 800 641 4122 Ridewell Corporation Springfield MO USA www ridewellcorp com RAR 260 Trailer Air Ride Owner s Manual e Height Control System Installation Install the appropriate height control valve linkages etc per the Extreme Air Height Control Valve Installation and Operations Guide for model RAR 260 Bushing Check Procedure The bushings in the RAR 260 suspension should be checked during any scheduled maintenance any time there is a suspected problem Bushing problems can arise from breakdown of the natural rubber over time or in a severe application by failure of the bond between the rubber and the metal inner sleeve Ihe bushings should be checked if any of the following conditions are observed 1 Uneven tire wear 2 Abnormal forward aft or lateral movement of the axle during operation 3 Rapid degradation of wear washers 4 Abnormal noises coming from the suspension To check insert the flat end of a pry bar between the sidewall of the hanger and the eye of the beam Applying moderate side load to the pry bar look for any relatively large or easy movement of the beam in relation to the hanger Note that a small amount of movement under load due to deflection of the rubber is normal and acceptable Repeat the process on the other side of the hanger If large or easy movement is noted drop the beams down per the bushing replacement procedure for further inspection of the b
5. NEEDLE PEEN THE ENTIRE TOE OF THE SECOND PASS INCLUDING AROUND THE ENDS OF THE AXLE SEAT HOLD THE NEEDLES PERPENDICULAR TO THE AXLE A UNIFORM DIMPLED PATTERN WILL APPEAR WHEN PROPERLY PEENED 12 REVISED WELD DIMENSIONS B 10102 REVISED NOTES 11 AND 12 ADDED 215 TO LIST OF SUSPENSION MODELS COVERED RIDEWELL CORPORATION 122 PO BOX 4586 SPRINGFIELD MISSOURI 65808 PROJECT NO uw IZE NTS 03103 RIDEWELL WELD PROCESS 1 5 DIA AXLE PASS WELD PART NO REV APPLICABLE SUSPENSION MODELS 200 225 240 245R 215 243 260 SHEET oE WELD PROCESS 1 13 2 RAR 260 Trailer Air Ride Owner s Manual Parts Illustrations Figure 6 RAR 260 UNDERSLUNG SUSPENSION 25 000 LB amp 30 000 LB CAPACITY BUSH CAVITY TENNECO MB96B914260 PIVOT BOLT SHEAR TYPE 7 8 9NC 10 LG HHCS 3 4 10NC 11 LG GR 8 HHCS 1 2 13NC 1 1 4 LG GR 5 7 2 T i 2 1 22 20 NOTES 1 ITEMS INDICATED WITH ARE INCLUDED IN BUSHING REPLACEMENT KIT NO 6040098 ORDER 1 KIT PER AXLE 2 FOR PAHT NUMBERS NOT SPECIFIED PLEASE SEE APPLICABLE ENGINEERING DRAWING 14 OR CONTACT RIDEWELL FOR ASSISTANCE RAR 260 Trailer Air Ride Owner s Manual 260 OVERSLUNG SUSPENSION 25 000 LB CAPACITY 5 i i oroe OOOO SS 7 NOTES 1 ITEMS INDICATED WITH ARE INCLUDED IN BUSHING REPLACEMENT KIT NO 6040098 ORDER 1 KIT PER AXLE 2 FOR PART NUMBERS NO
6. of a shock will damage the seal and quickly cause the shock to leak during service 2 RAR 260 Trailer Air Ride Owner s Manual Axle Alignment The RAR 260 suspension is equipped with the Speed Set alignment feature for simple manual alignment of the axles Depending on the suspension model slots are provided in either the hanger sidewalls or bushing assemblies see Figure 1a which allow 0 5 of adjustment at each pivot connection 1 Prior to alignment position the suspension beams so that the pivot bolts are centered in the alignment slots See Figure Align the forward axle to the center of the kingpin to within 1 8 See Figure 2 Alignment procedure b Note Note Loosen the pivot nut Move beam in the direction of desired axle movement Use a 1 2 shank breaker bar inserted into the square hole in the adjuster plate See Figure 1b Ensure that both inboard alignment washer and outboard adjuster plate have moved in unison It is important that the bushing is not skewed in the hanger prior to tightening Snug the pivot fasteners and re check alignment measurements Adjust if necessary Torque the pivot bolt using a 1 drive impact wrench and 6100054 E 20 Torx socket or equivalent until the Torx head shears off from the bolt Torque the pivot bolt with the suspension at ride height to prevent pre stressing the rubber pivot bushing It is imperative that the pivot fasteners be properly tor
7. part numbers assembly details torque values etc referred to in the installation procedures 25 exact sequence of installation and assembly of the suspension installation of the height control system and completion of the axle alignment procedure is at the discretion of the trailer manufacturer RAR 260 Trailer Air Ride Owner s Manual e Installation Axle to Suspension 1 fixture to support the axle and suspension during the welding process is recommended Contact Ridewell engineering for applicable weld fixture number 2 Verify the beam centers and center the axle in the axle seats 3 For drum brake axles space the cam off the tail of the beam per the drawing and ensure that the brake chamber brackets are oriented properly For disc brake axles ensure that the caliper assemblies are oriented properly and are rotated to proper position 4 Check the gap between the axle and the bottom of the axle seat at each end of each seat No gap greater than 1 16 allowed before clamping After clamping the axle into the axle seats no gap is allowed 5 Weld the axle to the suspension trailing arms per Ridewell Weld Process 1 see page 13 Installation Suspension to Frame Note The procedure in this section is recommended by Ridewell Minor deviations from these guidelines are permitted especially in the details of welding the suspension to the trailer The installer has ultimate responsibility for attachment of the suspen
8. 305 70R19 5 16 5 the axle Ride height is related to frame height the Exc distance from the bottom of the frame to the ground by 245758225 17 the following formula L eme o1 275 70R225 17 5 i i 5 i ee Ride Height Frame Height Loaded Tire Radius The loaded tire radius for common tire sizes can be found in Chart 1 1 305 70822 5 185 2 Beam Centers The centerline to centerline distance from one trailing arm beam to the other For the RAR 260 this 1275809225 419 is also the same as the centerline to centerline distance 315 80R22 5 19 5 from one hanger to the other The RAR 260 is designed to ep RE fit up onto standard I beam trailer frames at beam centers eee that correspond to standard axle track widths as shown below with standard wheel end equipment Installation at wider beam centers will reduce suspension clearances installation at narrower beam centers will de rate the axle beam capacity per the axle manufacturer s specifications For non standard beam centers frames frame centers axle track or wheel end equipment the installer is responsible for verifying clearances axle capacity proper fit up and any additional required support structure Standard Trailer Dimensions Trailer Width Axle Track Air Spring Centers 96 38 35 Installation General 1 See the applicable RAR 260 engineering drawing for all dimensional requirements
9. E EE E RIDEWELL SUSPENSION TORQUE CHART TORQUE size TORQUE _ s e RAR 260 This torque label included in the carton of parts um um um um um Gm Gm um omm should be adhered to the chassis above the suspension 1990032 ae Design torque on all suspension fasteners must be SET AND MAINTAINED BY INSTALLER 3 Figure 3 Air Spring Nut Upper 3 4 16NF 45 50 61 68 Air Spring Nut Lower 1 2 13NC 45 50 61 68 Air Spring Bolt Lower 1 2 13NC 25 30 34 41 Torque pivot bolt using 1 drive impact wrench and 6100054 E 20 Torx socket or equivalent until the Torx head shears off from the bolt Suspension fasteners to be retorqued initially at 6 000 miles 10 000 KM and 50 000 miles 80 000 KM increments thereafter Do not retorque pi vot fasteners RIDEWELL RAR 260 SUSPENSIONS ITEM SIZE TORQUE Pivot Bolt Nut 7 8 9NC SEE BELOW SEE BELOW Air Spring Nut Upper 3 4 16NF 45 50 ft lb 61 68 N m Air Spring Nut Lower 1 2 13NC 45 50 ft lb 61 68 Ne m Air Spring Bolt Lower 1 2 13NC 25 30fdb 34 41 Torque pivot bolt using a 1 drive impact wrench and 6100054 E 20 Torx socket or equivalent until the Torx head shears off from the bolt Suspension fasteners to be retorqued initially at 6 000 miles 10 000 KM and 50 000 miles 80 000 KM increments thereafter Do not retorque pivot fasteners
10. MBLY FITS THE AXLE WITH A ROOT GAP OF 0 125 INCH MAXIMUM BETWEEN THE AXLE AND THE BEAM AXLE SEAT AS ILLUSTRATED ABOVE IT IS RECOMMENDED TO C CLAMP THE AXLE TO AXLE BEAM SEAT PRIOR TO WELDING TO INSURE THAT PROPER CONTACT OCCURS BETWEEN THE AXLE AND THE BEAM SEAT SEE ILLUSTRATION BELOW 2 WELDING PRECAUTIONS ALL WELDS MUST BE KEPT AWAY FROM THE TOP AND BOTTOM OF THE AXLE WHERE MAXIMUM STRESSES OCCUR THE NO WELD ZONES ARE ILLUSTRATED ABOVE DO NOT TEST WELD THE ARC ON ANY PART OF THE AXLE TUBE THIS CAN LEAD TO A SMALL CRACK THAT MAY EVENTUALLY GROW AND AFFECT THE FATIGUE LIFE OF THE AXLE 3 ALL WELDERS AND WELDING OPERATORS SHOULD BE CERTIFIED PER AMERICAN WELDING SOCIETY AWS D1 1 SECTION 5 PROCEDURES OR EQUAL RECOMMENDED WELDING METHODS ARE SHIELDED METAL ARC SMAW STICK GAS METAL ARC GMAW SOLID WIRE OR FLUX CORED ARC FCAW FLUX WIRE WELDING WHATEVER ELECTRODE AND METHOD USED MUST DEVELOP A MINIMIMUM WELD TENSILE STRENGTH 70 000 1 REFER TO THE ELECTRODE MANUFACTURER S RECOMMENDATION FOR VOLTAGE CURRENT AND SHIELDING MEDIUM FOR THE DIAMETER ELECTRODE TO BE USED SO THE BEST FUSION AND MECHANICAL PROPERTIES CAN BE OBTAINED RECOMMENDED ELECTRODE 1 E7018 IF SMAW IS USED RECOMMENDED ELECTRODE IS 705 1 OR E70T 1 IF GMAW OR FCAW WELDING IS USED 5 ALL ELECTRODES USED SHOULD MEET AWS SECTION 5 SPECIFICATIONS AND CLASSIFICATIONS FOR WELDING CARBON AND LOW ALLOY STEELS 6 IF SMAW ELECTRODES STICK ARE USED THE
11. RIDEWELL SUSPENSIONS The Engineered Suspension Company RAR 260 Trailer Air Ride Suspensions Owner s Manual www ridewellcorp com P O Box 4586 e Springfield MO 65808 e 417 833 4565 e 417 833 4560 fax 0814 Suspension Identification Ridewell Suspensions are identified by a metal tag attached to the left hand hanger that indicates part number revision level and serial number Parts For optimum suspension performance order only Ridewell parts Replacement parts for Model RAR 260 are shown on pages 14 17 of this manual Sales Service amp Warranty If you need assistance regarding this product please contact us and we will be glad to help you Mailing Address Shipping Address Phones Fax E mail Ridewell Corporation Ridewell Corporation 800 641 4122 417 833 4565 P O Box 4586 3715 East Farm Rd 94 417 833 4560 fax Springfield MO 65808 Springfield MO 65803 info ridewellcorp com RAR 260 Trailer Air Ride Owner s Manual e Contents cau E 3 4 1 11 12 11 18013224 e Bera E E EE E A 4 5 Iastallation Suspe STO 5 PAG 6 7 Torque aera Us eee 8 ontrol 9 9 10 12 bi TK 13 Parte
12. T SPECIFIED PLEASE SEE APPLICABLE ENGINEERING DRAWING CONTACT RIDEWELL FOR ASSISTANCE 15 2 RAR 260 Trailer Air Ride Owner s Manual Figure 8 RAR 260 OVERSLUNG SUSPENSION 30 000 LB CAPACITY 1160020 LNUTSA IONCCENTERLOCKGRB NUTSH IENFGRD2 _ wean WASHER UHMWPE 36 howe OOOO NOTES 1 ITEMS INDICATED WITH ARE INCLUDED IN BUSHING REPLACEMENT KIT NO 6040098 ORDER 1 KIT PER AXLE 2 FOR PART NUMBERS NOT SPECIFIED PLEASE SEE APPLICABLE ENGINEERING DRAWING CONTACT RIDEWELL FOR ASSISTANCE 16 RAR 260 Trailer Air Ride Owner s Manual Figure 9 RAR 260 YOKE SUSPENSION 25 000 LB CAPACITY BUSHING SLEEVE Vw WELDED INTO TRAILER FRAME TRAILER FRAME amp CROSSMEMBERS PIVOT BUSHING ASSY INSTALLED IN SLEEVE PIVOT BOLT 5 7 8 10 1 HHCS 3 4 10 11 LGGR 8 HHCS 1 2 13NC 1 1 4 LGGR 5 HHCS 3 4 10NC 3 1 4 LGGR 5 aioe ccna e wesser 1160556 100 LWASHER 1 2 S T MED a washer Te aes SHOCK ASSY 6 MONROE OM seu sieeve push ouen NOTES 1 ITEMS INDICATED WITH ARE INCLUDED IN BUSHING REPLACEMENT KIT NO 6040099 ORDER 1 KIT PER AXLE 2 FOR PART NUMBERS NOT SPECI FIED PLEASE SEE APPLICABLE ENGINEERING DRAWING OR CONTACT RIDEWELL FOR ASSISTANCE 1 2 RAR 260 T
13. Y MUST BE NEW DRY FREE OF CONTAMINANTS AND COME FROM A STOCK THAT HAS BEEN PURCHASED AND STORED PER AWS SECTION 4 5 2 LOW HYDROGEN ELECTRODE STORAGE SPECIFICATIONS A 1 7 GROUND THE AXLE TO ONE OF THE ATTACHED AXLE PARTS SUCH AS THE AIR CHAMBER BRACKETS CAM BRACKETS OR BRAKE SPIDER NEVER GROUND THE AXLE TO A WHEEL OR HUB AS THE SPINDLE BEARING MAY SUSTAIN DAMAGE 8 THE AXLE ASSEMBLY SHOULD BE AT A MINIMUM TEMPERATURE OF 60 DEGREES F 15 DEGREES PRIOR TO WELDING PRE HEATING THE WELD ZONE TO THE AXLE MANUFACTURER S PRE HEAT TEMPERATURE IS RECOMMENDED THIS WILL MINIMIZE THE FORMATION OF MARTENSITIC OR BRITTLE METAL STRUCTURES IN THE FUSION LINE OR THE HEAT AFFECTED ZONE WHICH MAY CONTRIBUTE TO A PREMATURE FATIGUE FAILURE IN SERVICE 9 THE JOINT TO BE WELDED SHOULD BE POSITIONED IN THE FLAT OR HORIZONTAL POSITION 10 MULTIPLE PASS WELDING SHOULD BE USED ON THE BEAM AXLE CONNECTION USING THE FOLLOWING GUIDELINES TOTAL FILLET WELD SIZE SHOULD BE 0 5 INCH 11 MULTIPLE PASS WELD INITIATION AND TERMINATION SHOULD BE PERFORMED AS SHOWN ABOVE ALL SLAG MUST BE REMOVED BETWEEN PASSES BACKSTEP FILL ALL CRATERS EACH PASS MUST BE ACCOMPLISHED IN ONE OR TWO SEGMENTS NEVER START OR STOP WELDS AT THE END OF THE WELD JOINT START WELDS AT LEAST 1 FROM END AND BACKWELD OVER THE START WELDS MUST GO TO WITHIN 1 8 1 16 OF THE ENDS OF THE AXLE SEAT AND MUST GO BEYOND OR AROUND THE ENDS POST WELD PEENING RECOMMENDED BUT NOT REQUIRED
14. dewell warranty and is in lieu of all other expressed or implied warranties or representations including any implied warranties of merchantability or fitness or of any obligations on the part of Ridewell Corporation In no event will Ridewell be liable for business interruptions loss of profits personal injury cost of delay or for any other special indirect incidental or consequential losses costs or damages Subject to all of the above conditions if repair or replacement of any defective part is made by Ridewell Corporation Ridewell will return the repaired or replaced part to the original purchaser with transportation charges prepaid Years 1 3 10096 Parts amp labor Years 4 5 10096 Parts pivot bushing excluded 18
15. qued prior to placing the trailer into service Failure to torque the pivot fasteners will lead to slippage of the pivot joint causing rapid wear of the components and ultimately leading to catastrophic failure of the suspension Warranty coverage of the suspension is void if the pivot fasteners are not properly torqued Welding alignment washers to the hanger sidewalls of hanger mount suspensions is not required or recommended Align the aft axle s to the forward axle to within 1 16 using the same procedure See Figure 2 In general small alignment changes can be made on one side left beam or right beam It is preferable that large alignment changes be made by splitting the difference from one side to the other i e 1 2 the difference forward at one beam 1 2 the difference aft at the other beam RAR 260 Trailer Air Ride Owner s Manual e Figure 1a Figure 1b HANGER MOUNT YOKE MOUNT PIVOT BOLT ALIGNMENT WASHER ALIGNMENT PIVOT BOLT INITIALLY CENTERED IN ALIGNMENT SLOT Figure 2 2 RAR 260 Trailer Air Ride Owner s Manual Torque Requirements NOTICE Suspension fasteners ARE NOT at design torque Suspension installer must tighten all fasteners to design torque at the time of installation Refer to the suspension drawing and or the torque chart on this tag for further details il 9 EN HHH 66 HE H
16. r washers placed on both inboard and outboard sides of the bushing assembly Align beam pivot holes to bushing alignment slots and install new pivot bolts and nuts DO NOT REUSE SHEAR TYPE PIVOT BOLTS Align axle and torque pivot bolts per the Axle Alignment Procedure Re install shock absorbers Re install wheels and tires If necessary re connect air control valve linkage and adjust ride height POSITION SLOT IN BUSHING ASSY HORIZONTAL the Extreme Air Height Control Valve and Operations Guide IN SEAM IN BUSHIN SEAM IN BUSHING SLEEVE REF ASSY YOKE SUSPENSION BUSHING ASSY ORIENTATION Figure 5 RAR 260 Trailer Air Ride Owner s Manual Weld Process 41 ROOT PASS 0 50 SECOND PASS THIRD PASS AXLE 125 MAX AXLE AXLE AXLE 2 BEAM AXLE SEAT BEAM AXLE SEAT BEAM AXLE SEAT BEAM AXLE SEAT WELD JOINT PREPARATION FIRST PASS SECOND PASS THIRD PASS ARC START START ARC STOP THIRD PASS ARC STOP THIRD PASS NO WELD 4C 3 0 TOP OF AXLE SECOND PASS SECOND PASS FIRST PASS 1 0 1 0 WELD OF AXLE NO WELDING ZONE SMAW GMAW FCAW REPRESENTATIVE AXLE SEAT PROFILE DEPENDENT ON SUSPENSION PRODUCT WELD JOINT PREPARATION ALL GREASE DIRT PAINT SLAG OR OTHER CONTAMINANTS MUST BE REMOVED FROM THE WELD JOINT WITHOUT GOUGING THE AXLE TUBE INSURE THE LOWER BEAM ASSE
17. railer Air Ride Owner s Manual Maintenance Schedule To keep your Ridewell suspension in optimum working order we recommend following maintenance Every 1 000 First 6 000 miles Every 12 000 Every 50 000 of ME EE REN Bushings Air Springs _ Structure RideHeight 1 00002 Fastener Torque Inspect L Lubricate T Tighten Replace Warranty This warranty applies for usage within the USA For usage outside the USA please contact Ridewell The Ridewell Corporation warrants the suspension systems manufactured by it to be free from defects in material and workmanship under proper use installation application and maintenance on highway trailers for a period of 5 years with no mileage limit after delivery to the original purchaser Ihe responsibility of the Ridewell Corporation under this non transferable warranty is limited to making good at the company factory by repair or replacement of any part or parts which it manufactures Written permission for any claim return must be first obtained from authorized Ridewell personnel All returns must have transportation charges prepaid by the customer and accompanied with a complete written explanation of claimed defects and the circumstances of operational failure On all component parts not manufactured by Ridewell their warranty is to the extent that the manufacturer of such parts warrant them to Ridewell Corporation This is the only authorized Ri
18. sion to the trailer 1 Locate and mark the proper location of the suspension hangers and air spring plates on the trailer frame Ihe frame must be clear in this area for proper suspension fit up 2 Frame cross members should be located as shown on the drawing Fabricate filler plates approximately as shown on the drawing and weld to the crossmembers with 4 fillet welds it is recommended to place welds down the length of the crossmember not across it and butt weld to frames At the hanger a single large filler plate in place of the two small ones may be preferable 4 Locate and weld the hangers to the frame and filler plates with 4 fillet welds Stop welds approximately 1 2 from corners and edges 1 5 diameter piece of pipe may be placed through the holes in the hangers during this step as a stabilizer and aligning aide For hangers with wing gussets the wing gussets must be welded to a crossmember or other supporting structure Weld the air spring support plate to the frame and filler plate in similar fashion with 3 16 fillet welds 6 Locate a crossmember or diagonal brace to the front of the hangers as shown on the drawing and attach with fillet welds All welds to be 70 ksi min tensile strength GMAW FCAW recommended 8 Assemble air springs and shock absorbers per the drawing Ensure that no paint overspray gets under the dust cover of the shock absorbers Overspray that gets on the piston rod
19. ushing and replace if necessary 2 RAR 260 Trailer Air Ride Owner s Manual 10 Bushing Replacement Procedure RAR 260 Underslung or Overslung Suspension Order RAR 260 bushing replacement kit number 6040098 following describes bushing removal and installation using tool number 6100051 1 Raise and safely block up trailer and axle Remove wheels and tires Remove shock absorbers from suspension 2 Deflate air springs and if necessary disconnect control valve linkage 3 Remove pivot nuts and bolts 4 Rotate trailing arm beams down and out of hangers 5 Inspect pivot holes and hanger surfaces for unusual wear or damage Repair or replace components as required 6 Using the locator mark on the bushing as reference draw a line on the beam See Bushing Orientation portion of Figure 4 This will be used to orient the new bushing when installed 7 Lubricate threads and bearings of the bushing installation tool with grease 8 Assemble the bushing installation tool to the bushing and beams as shown in the Removal portion of Figure 4 and ensure that the tool is squarely seated on the beam eye Rotate the hex nut of the threaded rod with an impact wrench to press out the old bushing A small amount of heat should be applied to the beam eye to break the bushing loose Use of a 34 drive impact is recommended 9 Disassemble the bushing installation tool 10 Clean the bushing eye of corrosion and debris
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