Model M6 Service Manual
Contents
1. PRESSURE Li RELIEF VALVE HYDRAULIC PUMP RESERVOIR 5 FILTER 184 REV 030402 PAGE 7 RECOMMENDATIONS HYDRAULIC FLUID The hydraulic fluid selected for use with PULLMASTER planetary winches should be a high grade petroleum based fluid with rust oxidation and wear resistance Fluid cleanliness and operating viscosity are critical to winch reliability efficiency and service life For optimum performance the recommended viscosity range at operating temperature is 81 167 SUS 16 36 CS For extreme operating conditions of short duration the maximum viscosity range of 58 4635 SUS 10 1000 CS should not be exceeded For optimum performance the winch recommended hydraulic fluid temperature operating range is 80 150F 27 66 C For extreme operating conditions of short duration the maximum temperature range of 5 180F 21 82 C should not be exceeded LUBRICATION The winch gear train requires oil bath lubrication The winch is shipped from the factory without lubricating oil IMPORTANT ADD LUBRICATING OIL BEFORE RUNNING WINCH Refer to INSTALLATION DIMENSIONS for location of lubricating oil fill port Refer to APPENDIX A for quantity of oil required For normal operating temperature use SAE 90 lubricating oil For temperature beyond normal operating range consult lubricating oil supplier or factory HYDRAULIC PUMP For maximum p2. nuda 129 3SIAM2O10 HOS HALNNOD HOJ 3ziunssaud JziHn SS3Ud 97 862 QJ 6 T 2 0 06 71 18 08 poz S 2 0 9486 m 08 S1108 v ASN 02 82 04 S31OH ONILNNONW _ zs sz E c EINE 5508 JYS 71 8 51808 HOLON 962 180 28 i 5 ee EH Ac H i 1 qua lt lt 1 1 BATA AES HOHONV 37872 NI HO NO 1 201 2 8 1 1HOd 8 2 QJ 3SIMM9019 H31Nn09 IVNH31X3 1VNOILdO 1808 zee 5 21 lezz p cei i 801 06 1 2 1 1 T3A31 1118 19 184 REV 051117 PARTS REFERENCE FINAL DRIVE ITEM NO PART NO DESCRIPTION 1 1 1 1 1 2 1 1 1 1 1 1 3 3 3 3 6 3 1 1 2 1 FINAL HOUSING BALL BEARING 070 X 125 X 24 6214 OIL SEAL 80 X 100X 7 CIRCLIP ROTOR CLIP HO 500 END COVER PIPEPLUG 1 2 NPT SOCKET HEAD SUNGEAR STOPPER O RING 273 9 3 4 ID 1 8 CS RETAINING RING PLANET HUB STOPPER BREATHER RELIEF ASSEMBLY PLANET HUB PLANET PIN CIRCLIP ROTOR CLIP SH 87 CIRCLIP ROTOR CLIP SH 87 PLANET GEAR THRUST WASHER TORRINGTON TRA 1423 NEEDLE BEARING TORRINGTON B1416 CABLE DRUM CABLE ANCHOR PIPE PLUG 3 8 NPT SOC
3. 919 LLZ 902 219 994 647 607 801 194 222 002 ESL 062 204 919 e A10 89992 ON 0907 VLA H3HSVM LSNYHL NOLONIHHO L 95 919 104 12282 1VIH3S OL 23 184 REV 950201 ASSEMBLY DRAWING G1133 amp G1134 PAGE 24 184 REV 950201 APPENDIX LINE PULL LINE SPEED CABLE DRUM SIZES WIRE ROPE STORAGE MAXIMUM MAXIMUM ee PRESSURE VOLUME _ vete DRUM PART REQUIRED CODE NO MILLIMETERS METERS m POUNDS FEET MINUTE GALLONS KILONEWTONS METERS MINUTE BARE FULL BARE FULL BARREL FLANGE LENGTH 587 9 16 in DRUM EH DRUM BRUM Performance specifications are based on standard hydraulic motor with 1 2 inch diameter rope 184 REV 961001 PAGE 25 APPENDIX DESCRIPTION LO Ee 20869 21432 21432 20869 CAPLUG 21153 21402 21402 21153 PIPE PLUG PIPE PLUG STE EL BALL MOTOR 20876 20876 21403 21403 70 STANDARD 20906 20906 21508 21508 PAGE 26 184 REV 961001 BOLT TORQUE CHART BOLT DIAMETER TORQUE TORQUE Inches lb ft Nm NOTE Unless otherwise specified torque bolts per above chart 184 REV 950201 PAGE 27
4. vll MASTER THE LOGICAL CHOICE INSTRUCTION AND PARTS MANUAL MODEL M6 PLANETARY HYDRAULIC WINCH amp POWER to Move the World TWG Canada LANTEC and Pullmaster Brands 19350 22nd Ave Surrey BC V3S 356 Voice 1 604 547 2100 Fax 1 604 547 2147 www team twg com A COMPANY READ THIS MANUAL BEFORE INSTALLING OPERATING OR SERVICING THIS PRODUCT THIS MANUAL CONTAINS IMPORTANT INFORMATION MAKE THIS MANUAL AVAILABLE TO ALL PERSONS RESPONSIBLE FOR THE OPERATION INSTALLATION SERVICING AND MAINTENANCE OF THIS PRODUCT PMC 184 120612 POVER e Mav Shi Wao Effective 2011 10 01 A TOWER compar SUPERSEDES ALL PRIOR WARRANTIES Pull MASTER LIMITED WARRANTY 50130 0 Seller warrants that each article whether Gear Drive Products Brake Products and or Winch Products all of which are covered hereunder sold under this order shall at the time of shipment i conform to applicable specifications and ii be free from defects in material and workmanship during normal and ordinary use and service the Warranty Buyer s exclusive remedy and Seller s sole obligation under this Warranty shall be at Seller s option to repair or replace any article or part thereof which has proven to be defective or to refund the purchase price of such article or part thereof Buyer acknowledges that Buyer is knowledgeable concerning the articles covered by this Warranty and sold in connecti
5. 5 3 8 ID 1 8 CS BRAKE SPRING O RING 90 DURO 256 5 3 4 ID 1 8 CS BALL 5 32 DIAMETER BALLSTOPPER MOTORADAPTOR O RING 100 MM ID x 2 MM CS CAPSCREW HEX HEAD 1 2 13NC X 1 25 GR 5 LOCKWASHER 1 2 CAPSCREW HEX HEAD 1 2 13NC X 1 25 GR 5 LOCKWASHER 1 2 CONNECTING TUBE O RING 010 1 4 ID 1 16 CS CHECKVALVE O RING 306 ID X 034 C S SAFETY VALVE MOTOR 070 HIGH TORQUE LOW SPEED 12 9 CID PLASTIC CAPLUG SAE 10 ORB TIEBAR CAPSCREW HEX HEAD 7 16 14NC X 1 25 GR 5 LOCKWASHER 7 16 1 1 1 1 2 1 1 1 1 1 1 1 1 1 4 3 1 1 1 1 1 1 1 1 8 1 1 1 1 1 1 2 2 6 6 1 2 2 2 1 1 2 2 6 6 MOTOR SEAL KIT These part numbers and descriptions vary according to brake code Refer to APPENDIX B Donotsubstitute Available from PULLMASTER or Authorized Dealer only Refer to PAGE 20 for winch seal kit and PAGE 24 for ASSEMBLY DRAWING PAGE 22 184 REV 060714 m x lt oc m G1133 peJoui pinoys 151 39 3434 SLHYd eu UO JOU nq eui uo ey Syed Ajyenjoe uey sued aow Aew dno 0 6 eue 098 996 sig 28 028 118 078 128 eze 008 102 028 992 291 128 651 092 914 062 v2Z 666
6. BOLT TORQUE CHART at back of manual REASSEMBLY OF CABLE DRUM ASSEMBLY Reassemble cable drum assembly by reversing the disassembly procedure 1 Press ball bearing item 109 into final housing item 100 and fasten with circlip item 109 2 Press new well greased oil seal item 105 into other side of final drive housing 3 Press final housing item 100 onto hub of cable drum item 500 and fasten with circlip item 513 4 Tum winch over so it stands on final housing end Press spherical roller bearing item 507 into cable drum item 500 5 Press new well greased oil seal item 515 into cable drum item 500 EEE 184 REV 950201 PAGE 15 SERVICE INSTRUCTIONS continuep REASSEMBLY OF FINAL DRIVE ASSEMBLY Reassemble final drive assembly by reversing the disassembly procedure 1 Return winch to a horizontal position standing on its mounting feet 2 Install new well greased O ring item 293 on end of final sungear item 340 and slide sungear through opening in cable drum item 500 3 Reassemble final planet hub assembly Press pre greased needle bearing item 323 midway into planet gear item 320 Position thrust washers item 321 on either side of planet gear and press planet pin item 310 into the planet hub item 300 Retain with circlip item 311 4 Insertfinal planet hub assembly into final housing so that spline interlocks with cable drum and planet gears mesh with final sungear 5 Install new well gr
7. manual under SPECIFICATIONS Other use as foreseen in the functional description of the hydraulic winch is not allowed without written permission from PULLMASTER 1 Do not install operate or service winch before reading and understanding manufacturer s instructions 2 The winch described herein is not designed for operations involving lifting or moving personnel 3 Do not lift or carry loads over people 4 Do not exceed recommended operating pressure psi and operating volume gpm 5 Do not jerk the winch Always smoothly accelerate and decelerate load 6 Do not operate a damaged noisy or malfunctioning winch 7 Do not leave a load suspended for any extended period of time 8 Never leave a suspended load unattended 9 Winch should be maintained and operated by qualified personnel 10 Inspect winch rigging mounting bolts and hoses before each shift 11 Warm up equipment before operating winch particularly at low ambient temperatures 12 Verify winch function by raising and lowering a full test load to a safe height before each shift 13 Do not weld any part of the winch 14 Verify gear lubrication and brake circulation supply and return before operating winch 15 Be sure of equipment stability before operating winch 16 Wear proper clothing to avoid entanglement in rotating machinery 17 Always stand clear of the load 18 Use only recommended hydraulic oil and gear lubricant
8. or accelerated wear caused by machine or ambient vibration Further Buyer acknowledges and agrees that Buyer is always solely responsible for determination and final approval of the application factor which may be used in Seller s calculations and this application factor is 1 0 unless otherwise stated in Seller s quotation specifications The remedies for this Warranty shall be only those expressly set forth above to the exclusion of any and all other remedies of whatsoever kind The limited remedies set forth above shall be deemed exclusive even though they may fail their essential purpose No agreement varying or extending the foregoing Warranty remedies exclusions or limitations shall be effective unless in writing signed by an executive officer of Seller and Buyer This Warranty is non transferable If party who had purchased articles from Buyer or from persons in privity with Buyer brings any action or proceeding against Seller for remedies other than those set forth in this Warranty Buyer agrees to defend Seller against the claims asserted in such action or proceeding at Buyer s expense including the payment of attorneys fees and costs and indemnify Seller and hold Seller harmless of from and against all such claims actions proceedings or judgments therein Buyer also agrees to defend and indemnify Seller of from and against any loss cost damage claim debt or expenses including attorneys fees resulting from any claims by
9. pulling Standard rotation for pulling is counterclockwise when looking at the hydraulic motor of the unit It is critical to select the cable anchor slot which will permit winding of the wire rope on the drum in the correct direction of rotation If the wire rope is wound on the cable drum in the wrong direction of rotation the winch will have no braking capacity Each winch is shipped from the factory with a label on the drum indicating the correct cable anchor slot SI1013 6 WIRE ROPEINSTALLATION Counterclockwise pulling winch shown CABLE ANCHOR SLOT Use cable anchor slot on opposite side of drum for clockwise pulling winch Feed the wire rope through the cable anchor slot Loop rope back into slot as shown Insert cable anchor into slot small end first and long side nearest the drum flange Pull rope tight to wedge rope in slot um CABLE ANCHOR On wire rope installation care must be taken that the wire rope is wrapped completely around the cable anchor and properly pulled into the cable anchor slot in the cable drum The cable drum requires 5 wraps of wire rope for safety The winch operation is controlled by a single control valve lever which has a forward a reverse and a neutral position Speed control in either direction is obtained by modulation of the control valve lever Maximum line speed in either direction is obtained when the contr
10. use and service This Warranty shall not apply to any article which has been repaired altered or disassembled or assembled by personnel other than those of Seller This Warranty shall not apply to any article upon which repairs or alterations have been made unless authorized in writing and in advance by Seller This Warranty shall not apply to any articles or parts thereof furnished by Seller to Buyer s specifications and or furnished by Buyer or acquired from others at Buyer s request SELLER MAKES NO EXPRESS WARRANTIES AND NO IMPLIED WARRANTIES OF ANY KIND OTHER THAN THE WARRANTY EXPRESSLY SET FORTH ABOVE SUCH WARRANTY IS EXCLUSIVE AND IS MADE AND ACCEPTED IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Buyer expressly agrees that Seller is not responsible to perform any work or investigation related in any way to torsional vibration issues and is not responsible for the detection or remedy of Natural Frequency Vibration of the mechanical system in which the unit is installed Buyer acknowledges understands and agrees that this Warranty does not cover failures of the unit which result in any manner from the operation of the machine or unit at vibration frequencies at or near the natural frequency vibration of the machine in such a way that damage may result Buyer expressly agrees that Seller is not responsible for failure damage
11. 19 Keep hydraulic system clean and free from contamination at all times 20 Maintain winch and equipment in good operating condition Perform scheduled maintenance regularly 21 Keep hands clear when winding wire rope onto the winch drum 22 not use the wire rope as a ground for welding 23 Rig the winch carefully Ensure that the wire rope is properly anchored to the correct cable anchor slot at the cable drum 24 Do not lift a load with a twisted kinked or damaged wire rope 25 Consult wire rope manufacturer for size type and maintenance of wire rope 26 Maintain five wraps of wire rope on the cable drum at all times 27 n case of a power failure or breakdown leading to an unexpected stop of the hydraulic power circuit stand clear of the area and the load being hoisted take the necessary precautions to prevent access to area where the load is halted 28 The noise level of the winch is 86 dBA measured on a distance of 1 00 meter 1 60 meters high The measuring equipmentused was Realistic 42 3019 29 Clean up any oil spillage immediately 30 Wear proper clothing and personal protection equipment such as footwear safety goggles and a hard hat Read manual first 184 REV 051117 1 DESCRIPTION OF THE MODEL M6 GENERAL DESCRIPTION The PULLMASTER Model M6 is a planetary hydraulic winch having equal speed in both directions and an automatic disc brake The main c
12. ABLE DRUM DIMENSIONS STANDARD DRUM Barrel diameter 7 50 in 191 mm Flange diameter 11 38 in 289 mm Barrellength 9 00 in 229 mm CABLE STORAGE CAPACITY Size of wire rope 3 16 in 932 ft 284m 1 4 in 484 ft 148m 5 16 3631 111m 3 8 in 2181 67 7 16 in 198 ft 60m 1 2 in 139 ft 42m 9 16 in 93 ft 28m MAXIMUM OPERATING PRESSURE 2000 psi 138bar MAXIMUM OPERATING VOLUME 15 US gpm 57 l min MINIMUM OPERATING VOLUME 5 US gpm 19 l min DRUM TORQUE AT MAXIMUM PRESSURE 26 448lb in 2 988 Nm DRUM RPM AT MAXIMUM VOLUME 26 rpm LINE PULL AT MAXIMUM PRESSURE Bare drum 6 612 Ib 29 4 kN Full drum 4 864 Ib 21 6 kN LINE SPEED AT MAXIMUM VOLUME Bare drum 54 fom 17 m min Full drum 74 fom 23 m min PERMISSIBLE SYSTEM BACK PRESSURE AT MOTOR RETURN PORT 65 psi 4 5 bar LUBRICATING OIL Refer to RECOMMENDATIONS for viscosity and instructions Refer to APPENDIX A for oil volume required 184 010215 5 PERFORMANCE GRAPHS PG M6 B LINE PULL VS OIL PRESSURE LINE PULL kN 0 4 4 8 9 13 3 17 8 222 26 7 29 4 2000 rr3 138 o 1600 H 110 E 1200 83 L T 0 L 0 800 55 4 400 28 0 L i 0 0 1000 2000 3000 4000 5000 6000 6612 LINE PULL Ib LINE SPEED VS OIL VOLUME LINE SPEED m mi
13. Buyer or third parties to property or injury to persons resulting from faulty installation repair or modification of the article and misuse or negligent operation or use of the article whether or not such damage to property or injury to persons may be caused by defective material workmanship or construction ADVISORY Winches and hoists are not approved for lifting or handling personnel or persons unless specifically approved in writing from Seller for the specific intended application Under no circumstances shall Seller be liable i for any damage or loss to any property other than the warranted article or part thereof or ii for any special indirect incidental or consequential damage or loss even though such expenses damages or losses may be foreseeable The foregoing limitations on Seller s liability in the event of breach of warranty shall also be the absolute limit of Seller s liability in the event of Seller s negligence in manufacture installation or otherwise with regard to the articles covered by this Warranty and at the expiration of the Warranty period as above stated all such liabilities shall terminate Buyer s purchase of any article s covered by this Warranty shall constitute acceptance of the terms and conditions hereof and shall be binding upon Buyer and Buyer s representatives heirs and assigns The laws of the Province of British Columbia shall govern Buyer s rights and responsibilities in regard to this Warranty and
14. KET HEAD CIRCLIP ROTOR CLIP SH 262 WINCH SEALKIT CONSISTS OF ITEMS 105 123 293 515 710 711 751 753 811 831 AND 834 This part varies according to drum code Referto APPENDIX A Refer to PAGE 22 for motor seal kit and PAGE 24 for ASSEMBLY DRAWING PAGE 20 184 REV 970901 FINAL DRIVE GROUP G1134 130 311 123 323 310 313 109 103 105 500 340 j A y BZ D ar 120 121 124 126 122 DNS Groups drawings may reference more parts than are actually present in a specific assembly Parts that are referenced on the drawing but are not on the PARTS REFERENCE list should be ignored 184 REV 950201 PAGE 21 PARTS REFERENCE BRAKE GROUP O RING 016 5 8 ID 1 16 CS FINALSUNGEAR SPHERICAL ROLLER BEARING SKF t 22211CC OIL SEAL 3 375 X 4 000 X 500 THRUST WASHER TORRINGTON FTRA 4060 THRUST BEARING TORRINGTON FNT 4060 BRAKE HOUSING BRONZE WASHER O RING 163 6 ID 3 32 CS CHECKVALVE PLASTIC CAPLUG 1 8 NPT BACK UP WASHER OILSEAL BRAKE SPACER DIVIDERPLATE FRICTION PLATE BRAKEHUB SPRAG CLUTCH ALIGNER SPRAG CLUTCH BORG WARNER 140373 SPRAG CLUTCH ALIGNER CIRCLIP ROTOR CLIP SH 196 BRAKE SHAFT PISTON O RING 90 DURO 253
15. LEASE PULLMASTER planetary winches can be supplied with an external brake release which permits release of the automatic disc brake from an external pressure source FAILURE TO PROPERLY VENT EXTERNAL BRAKE RELEASE PORT WILL TRAP BRAKE PRESSURE AND ALLOW THE LOAD TO DROP CAUSING PROPERTY DAMAGE SEVERE INJURY OR DEATH WINCHES SUPPLIED WITH EXTERNAL RELEASE OPTION MUST BE CONNECTED ACCORDING TO TYPICAL HYDRAULIC CIRCUIT CABLE DRUM SIZES Aside from the standard drum sizes listed in APPENDIX A the PULLMASTER Model M6 planetary winch can be supplied with optional drums to accommodate large wire rope storage capacity DRUM GROOVING Cable drums forthe PULLMASTER Model M6 planetary winch can be grooved Where this option is a requirement it is necessary to state the size of wire rope which is to be used with the winch OPTIONAL HYDRAULIC MOTORS The performance of the standard PULLMASTER Model M6 planetary winch may be changed by using a different displacement motor Contact the factory for performance information The PULLMASTER WINCH CORPORATION will consider other options for quantity requirements PAGE 4 184 REV 970901 SPECIFICATIONS Performance specifications are based on standard hydraulic motor gear ratio and cable drum drum code 2 with 1 2 inch diameter wire rope For other cable drums refer to APPENDIX A Performance specifications for winches supplied with optional motors are provided in attached supplement C
16. RUCTIONS Cable sheaves or block purchase operated with the winch are not turning freely Damage or wear in the hydraulic motor Excessive back pressure in the hydraulic system Relief valve may be set too low Winch will not produce line speed at maximum Winch is mounted to an uneven surface see volume as listed in SPECIFICATIONS INSTALLATION INSTRUCTIONS Cable sheaves or block purchase operated with the winch are not turning freely Damage or wear in the hydraulic motor Excessive back pressure in the hydraulic circuit Winch will not reverse Leakage out of the brake piston prevents the brake from being released against the brake springs This is caused by damaged O ring seals on the brake piston The O ring seals on the brake release channel between the motor adaptor and the brake housing is damaged If this failure occurs there will be substantial leakage from between the motor adaptor and brake housing Insufficient hydraulic pressure see SPECIFICATIONS for minimum operating pressure Winch is mounted to an uneven surface see INSTALLATION INSTRUCTIONS Hydraulic pressure is not reaching the brake piston plugged brake release orifice in the brake housing 184 REV 950201 PAGE 11 TROUBLE SHOOTING FAILURE PROBABLE CAUSE Brake will not hold Friction plates or divider plates have been damaged by contamination in the hydraulic fluid or lack of circulation flow in the brake housing Brake piston is seized in the brak
17. Remove and discard oil seal item 711 and backup washer item 710 All parts have now been removed from the brake housing and there is no need for further disassembly unless a failure has been analysed in the final drive of the Model M6 DISASSEMBLY OF FINAL DRIVE ASSEMBLY If a failure occurs in the mechanism located inside the final drive housing or the winch has to be disassembled beyond the point described in the preceding chapter proceed as follows 1 Remove the drain plug item 121 from the end cover item 120 and drain the lubricating oil from the final drive assembly andthe cable drum interior In order to drain all of the oil out of the cable drum interior the winch should be tipped to an angle and the filler plug item 503 removed PAGE 14 184 REV 970901 SERVICE INSTRUCTIONS continuep 2 Remove retaining ring item 124 and pull end cover item 120 out of final housing item 100 3 Discard O ring item 123 and inspect planet hub stopper item 126 and sungear stopper item 122 for excessive wear Replace sungear stopper if less than 35 inch thick and planet hub stopper if less than 14 inch thick 4 Remove final planet hub assembly from final housing item 100 5 Inspect three planet gears item 320 for damage or wear If it is necessary to remove planet gears remove circlip item 311 and press planet pin item 310 out of planet hub item 300 Inspect needle bearing item 323 and two thrust washers ite
18. ction of the motor must be re used in order to provide the required porting to operate the automatic brake and for the circulation flow DISASSEMBLY OF BRAKE HOUSING ASSEMBLY Disassemble brake housing assembly as follows 1 Remove motor adaptor item 800 by removing six capscrews item 821 and lockwashers item 823 Allow brake springs item 752 to expand safely by unscrewing capscrews one turn at a time 2 Remove and discard O ring item 707 3 Remove eight brake springs 752 Examine brake springs for damage and measure overall length Overall spring length should be 1 54 inch If any spring measures less than 1 48 inch replace all springs as a set 4 Pullthe brake piston item 750 out of the brake housing using two 1 2 13NC bolts screwed into the two puller holes in the piston and discard O rings item 751 and item 753 184 REV 970901 PAGE 13 SERVICE INSTRUCTIONS 5 Remove pipe plug item 755 and verify that circulation hole in piston is clear and unobstructed Re install pipe plug item 755 6 Thoroughly inspect the brake piston outer diameters and brake housing inner bores for scoring caused by hydraulic fluid contamination Minor surface damage may be repaired by polishing with a fine emery cloth 7 Pull the brake shaft item 730 and complete brake hub assembly from the brake housing 8 Disassemble brake hub assembly by removing circlip item 727 from brake shaft item 730 Remove bra
19. e following preventative maintenance service should be done every 12 months or 500 hours whichever comes first 1 Disconnect all hydraulic hoses and remove the winch from its mounting 2 Disassemble the winch as per instructions 3 Discard and replace all O rings and oil seals 4 Inspect all parts for wear and replace if necessary 5 Clean all parts and inspect for wear and damage as per instructions Replace worn or damaged parts as required 6 FollowINSTALLATION and OPERATING INSTRUCTIONS when returning winch to its mounting When ordering parts forthe PULLMASTER Model M6 planetary winch always quote the complete model and serial number of the unit MODEL NO SERIAL NO PULLMASTERWINCH CORPORATION reservesthe rightto change specifications andthe design of PULLMASTER planetary winches at any time without prior notice and without incurring any obligations PAGE 18 184 REV 990815 11062 A 682 161 SAWIL TIY Q3NIV LNIVIA ui n m 38 LSNW 3dOH H3HIM JO 9 40 WANININ V 682 21 AL3J4VS QJ ul vi os vL 2 L 812 1HOd az Se
20. e housing because of contamination in the hydraulic fluid Excessive back pressure in the return line causes the brake to be released Control valve has incorrect spool which traps hydraulic pressure in the brake piston when the control valve handle is returned to neutral position For proper function of the automatic brake both pressure ports of the winch must be open to the reservoir in neutral position of the control valve Wire rope is fastened to the incorrect cable anchor slot Sprag clutch is damaged or surfaces where sprag clutch engages on brake shaft or brake hub are worn or indented Winch supplied with external brake release option is not plumbed per HYDRAULIC CIRCUIT Failure to vent external brake release port to reservoir may trap pressure and cause winch brake to slip Brake vibrates when lowering load Pump is too slow Pump rpm must be maintained at normal operating speed when a load is lowered Brake is running too hot This is caused by a complete lack of or insufficient circulation flow To check circulation flow remove safety valve from motor adaptor When winch is reversed oil flow should be approximately 2 5 US gpm 9 litre min Control valve has poor metering characteristics Damaged brake plates or divider plates The over running clutch which connects the motor shaft with the brake assembly is damaged Air mixed with hydraulic oil foamy oil Oil leaks from the hydraulic motor flange and the mot
21. e long end of the connecting tube into motor adaptor item 800 Install new well greased O ring item 811 on flange of the hydraulic motor and two new well greased O rings item 834 on check valves item 832 Insert check valves in face of motor and fasten motor to motor adaptor using two capscrews item 815 and lockwashers item 817 IMPORTANT Before operating the winch add lubricating oil up to the oil level fill port on the end cover Refer to INSTALLATION INSTRUCTIONS for location of fill port Refer to APPENDIX A for oil volume required Ensure all pipe plugs are securely tightened and breather relief item 130 is in place To ensure proper reassembly run the winch in both directions without load PULLING A LOAD WITH A NEWLY SERVICED WINCH WILL ENABLE AN INSTALLATION OR SERVICE PROBLEM TO GO UNDETECTED AND ALLOW THE LOAD TO DROP CAUSING PROPERTY DAMAGE SEVERE INJURY OR DEATH TO ENSURE PROPER REINSTALLATION REFER TO PROCEDURES AND TESTS DESCRIBED IN INSTALLATION AND OPERATING INSTRUCTIONS 184 970901 PAGE 17 RECOMMENDED MAINTENANCE Winch gear train lubricating oil should be changed after the initial six months or 50 hours of operation whichever comes first Lubricating oil should then be changed every 12 months or 500 operating hours whichever comes first Hydraulic system fluid should be changed at least once every 12 months For optimum performance over an extended period of time th
22. eased O ring item 123 into end cover item 120 Verify that planet hub stopper item 126 and sungear stopper item 122 are installed into end cover 6 Gently insert end cover into final housing item 100 and fasten with retaining ring item 124 7 Temporarily remove breather relief valve item 130 from end cover Turn winch up on end with cable drum opening upwards 8 Install new backup washer item 710 and new well greased oil seal item 711 inthe bore ofthe brake housing 9 Place brake housing item 700 into cable drum item 500 guiding it over final sungear item 340 Use 16 capscrews item 971 and lockwashers item 973 to secure tie bars item 970 REASSEMBLY OF BRAKE HOUSING ASSEMBLY Reassemble brake housing assembly by reversing the disassembly procedure 1 Install bronze washer item 706 Place thrust bearing item 617 in between two thrust washers item 615 on top of bronze washer item 706 2 Install spragclutch item 723 in bore of brake hub item 720 Insert sprag clutch aligner item 722 into one side of the brake hub Insert the other sprag clutch aligner item 724 into the other side of the brake hub Carefully slide the brake shaft item 730 through the sprag clutch aligner item 724 into the brake hub assembly and fasten into place by installing circlip item 727 IMPORTANT For proper brake function ensure that the brake hub rotation is correct When viewed from the motor end the brake shaft of a co
23. erformance of the PULLMASTER planetary winch the hydraulic pump must supply the maximum flow of hydraulic fluid atthe hydraulic pressure stated in SPECIFICATIONS HYDRAULIC CONTROL VALVE The standard control valve used for operation of the PULLMASTER planetary winch must have a four way spring return to neutral feature which provides for open flow from the pressure ports of the winch to the reservoir in neutral position of the control motor spool It is importantto point out that good speed control especially when lowering a load depends on the metering characteristics of the control valve The better the oil flow is metered the better will be the speed control HYDRAULIC PRESSURE RELIEF The hydraulic circuit for the PULLMASTER planetary winch requires a pressure relief set at the operating pressure see SPECIFICATIONS Usually a pressure relief is part of the hydraulic control valve Where this is not the case aseparate pressure relief valve must be installed andsetatthe recommended maximum pressure HYDRAULIC RESERVOIR It is recommended that the hydraulic reservoir has sufficient capacity to provide good heat dissipation in orderto prevent over heating of the hydraulic fluid The hydraulic reservoir should be made from clean and scale free material to prevent contamination of the hydraulic fluid In order to prevent air from being mixed with the hydraulic fluid the reservoir should have an over flow baffle separating t
24. he return lines from the suction line andall return lines should enterthe reservoir below the fluid level The reservoir should be mounted close to and above the hydraulic pump in a location which provides for free air circulation around the reservoir HYDRAULIC HOSES The following hydraulic hoses are recommended for maximum efficiency of the PULLMASTER Model M6 planetary winch Pressure lines Equivalent to SAE 100R12 12 Itis recommended that a larger size of hydraulic hose is installed where the pressure lines or the circulation lines are excessively long HYDRAULIC FILTER Hydraulic filter recommendations for the hydraulic circuit ofthe PULLMASTER planetary winch based return line filter are given as follows 10 microns 5 microns Average Atmosphere Dusty Atmosphere Inorderto prevent accidental stoppage of the return line flow the oil filter should have a by pass feature USE OF STOP FOR EUROPEAN MACHINERY DIRECTIVE APPLICATIONS The use of an E stop emergency is mandatory in the controls circuit The E stop is to be placed in the operator s control panel The E stop must be designed and placed in line with EN 60204 and EN 418 PAGE 8 184 REV 030402 INSTALLATION INSTRUCTIONS FAILURE TO FOLLOW INSTALLATION INSTRUCTIONS WILL RESULT IN PROPERTY DAMAGE SEVERE INJURY OR DEATH The initial installation or mounting of a PULLMASTER planetary winch is critically important for proper o
25. ke shaft from brake hub assembly Remove sprag clutch aligners item 722 and item 724 and sprag clutch item 723 from brake hub MINOR SURFACE DEFECTS WHERE THE SPRAG CLUTCH ENGAGES THE BRAKE SHAFT AND BRAKE HUB WILL RESULT IN BRAKE FAILURE AND ALLOW THE LOAD TO DROP CAUSING PROPERTY DAMAGE SEVERE INJURY OR DEATH THOROUGHLY INSPECT THESE AREAS AND IF NECESSARY REPLACE BRAKE SHAFT SPRAG CLUTCH AND BRAKE HUB AS A SET 9 Thoroughly inspect brake shaft item 730 and brake hub item 720 particularly the surfaces where the sprag clutch item 723 engages If any indentation or surface damage is detected replace brake hub sprag clutch and brake shaft as a set 10 Remove the 14 divider plates item 713 together with 13 brake plates 715 and inspect for damage or wear Plates should not show heat discoloration Paper material on friction plates should be intact and smooth If any damage is detected replace friction and divider plates as a set Check oil for contamination if plates are in poor condition DANGER DAMAGED FRICTION OR DIVIDER PLATES WILL REDUCE BRAKING CAPACITY AND ALLOW THE LOAD TO DROP CAUSING PROPERTY DAMAGE SEVERE INJURY OR DEATH DO NOT USE SOLVENT TO CLEAN THE FRICTION PLATES PERFORM THOROUGH INSPECTION AND IF NECESSARY REPLACE FRICTION AND DIVIDER PLATES AS A SET 11 Remove brake spacer item 712 two thrust washers item 615 and thrust bearing item 617 12 Remove bronze washer item 706
26. m 321 and replace if damaged 6 Remove final sungear item 340 from cable drum item 500 Remove O ring item 293 from final sungear and discard All parts have now been removed from the final drive assembly If further disassembly is required proceed as follows DISASSEMBLY OF CABLE DRUM ASSEMBLY To separate brake housing item 700 and final housing item 100 from cable drum item 500 proceed as follows 1 Remove 16 capscrews item 971 and lockwashers item 973 Remove two tie bars item 970 Stand the winch upright on its end housing 2 Inserttwo heel bars between the flange of the cable drum 500 and the brake housing item 700 and gently pry the brake housing out of spherical roller bearing item 507 3 Remove and discard oil seal item 515 4 Inspect spherical roller bearing item 507 and replace if damaged 5 Turn winch over to stand upright on the drum flange Remove circlip 513 from splined hub of cable drum item 500 6 Inserttwo heel bars between the drum flange and the final housing and carefully pry the cable drum out of ball bearing item 103 7 Remove and discard oil seal item 105 If removal of ball bearing item 103 is necessary first remove circlip item 109 The PULLMASTER Model M6 winch has now been completely disassembled REASSEMBLY Thoroughly clean and lubricate all parts Use only new well greased O rings and oil seals Unless otherwise specified torque fasteners per
27. n 0 3 6 9 12 15 18 22 15 57 E 5 12 46 02 2 E i 6 23 E gt gt L _ 3 11 1 0 1 2 1 4 0 0 10 20 30 40 50 60 72 LINE SPEED fpm Performance graphs are based on standard hydraulic motor and cable drum with 1 2 inch diameter wire rope PAGE 6 184 REV 990815 TYPICAL HYDRAULIC CIRCUITS HC M6 B PULLING APPLICATIONS al LL AW i d 800 PSI 55 BAR ANM 4 CONTROL VALVE REQUIRED FOR MODELS MOTOR SPOOL SUPPLIED WITH EXTERNAL 4 WAY SPRING BRAKE RELEASE OPTION RETURN TO CENTER L PRESSURE 8 RELIEF VALVE gt Ou FILTER HYDRAULIC LJ PUMP RESERVOIR HOISTING APPLICATIONS all B di LL NV 3 1 t X 0 84 COUNTER 2 HE BALANCE 800 PSI 55 BAR VALVE 3 US GPM 12 L MIN HOISTING REQUIRED FOR MODELS SUPPLIED WITH EXTERNAL BRAKE RELEASE OPTION r1 CONTROL VALVE MOTOR SPOOL 4 WAY SPRING RETURN TO CENTER
28. n seal kit the oil seals supplied do not require backup washers A clean working area is of prime importance similar to conditions used for service work on any other hydraulic components All parts as they are removed from the winch assembly should be inspected for wear and damage Thoroughly clean parts before reassembly however do not use solvent to clean friction plates During reassembly lubricate all O rings and oil seals with grease Inthe following service instructions reference to parts is made by numbers and shownonthe applicable group drawings DISASSEMBLY The majority of service or repair work is accomplished by disassembling the brake housing of the PULLMASTER Model M6 planetary winch There are no special tools adjustments or calibrations necessary to service or repair the winch REMOVAL OF HYDRAULIC MOTOR ASSEMBLY 1 Remove two capscrews item 815 and lockwashers item 817 Pull the hydraulic motor item 850 out of the winch assembly 2 Remove and discard O ring item 811 3 Remove connecting tube item 830 Remove and discard two O rings item 831 4 Remove two check valves item 832 Remove and discard two O rings item 833 The standard motor of the Model M6 is a NICHOLS hydraulic motor with 12 9 cubic inch displacement If a problem is analysed to be in the hydraulic motor we recommend that a NICHOLS dealer be contacted for parts and service If the hydraulic motor is disassembled the original flange se
29. ns full of oil at all times Connect the return line directly to reservoir Do not connect to a common return line 7 Verify that breather relief item 130 is in place on end cover above oil level Rotate end cover if breather relief is below oil level IMPORTANT Do not replace breather relief or safety valve with a pipe plug The breather relief does not prevent oil seal failure but serves as an indicator or warning that the oil seals between brake housing and the cable drum interior have failed and must be replaced immediately The safety valve acts as a warning that excessive pressure is present in the brake housing and must be rectified immediately 184 REV 970901 PAGE 9 OPERATING INSTRUCTIONS FAILURE TO FOLLOW OPERATINGINSTRUCTIONS WILL RESULT IN PROPERTY DAMAGE SEVERE INJURY OR DEATH Afterthe PULLMASTER planetary winch has been installed in accordance with the INSTALLATION INSTRUCTIONS the wire rope can be fastened to the cable drum IMPORTANT The ropes chains slings etc are not part of the winch and are not covered by this manual Refer to manufacturer s handling inspection and maintenance recommendations to avoid potential accidents For selection of ropes etc please check following product standards DIN 15020 prEN818 1 9 prEN 1492 1 2 prEN 1677 1 3 and other relevant product standards The cable drum of the PULLMASTER planetary winch has two cable anchor slots one for clockwise and one for counterclockwise
30. of the winch control valve When the control valve is returned to neutral position rotation stops and the disc brake applies automatically During lowering operations ofthe winch the friction created by the brake discs results in heat This heatis dissipated by the circulation of hydraulic fluid from the brake housing supplied internally through the hydraulic motor This circulation flow is internally vented to the return line through a check valve arrangement inside the specially modified motor The circulation flow is supplied only when lowering a load A separate ventline connecting the PULLMASTER Model M6 with the hydraulic reservoir is not required see TYPICAL HYDRAULIC CIRCUIT IMPORTANT SAFETY VALVE The PULLMASTER Model M6 winch does not require a drain line up to 100 psi permissible back pressure in the brake housing To indicate excessive pressure and potential damage to the hydraulic motor or to the oil seal in the brake housing a safety valve is installed on the motor adaptor BREATHER RELIEF VALVE Excessive pressure in the brake housing will damage the oil seal separating the brake housing from the drum interior Damage to this seal will cause the drum to fill up with hydraulic fluid To prevent damage to the drum seal and end cover of the final drive if the cable drum fills up with hydraulic fluid a breather relief PARTS REFERENCE item 130 is installed on the end cover The breather relief does not prevent oil seal failure but se
31. ol valve lever is moved as far as it can go The disc brake of the winch will come on automatically when the winch control lever is returned to neutral Always warm up equipment prior to operating winch particularly in low ambienttemperature Circulate hydraulic oil through the winch control valve for several minutes to warm the hydraulic system To prime the winch with warm oil operate the winch at slow speed forward and reverse several times Prevent corrosion damage to winch interior If not used regularly run winch up and down at least once every two weeks To ensure proper winch installation and function raise and lower a full test load to a safe height before using winch for regular operation at the start of each shift If after a new installation the winch does not function properly refer to the TROUBLESHOOTING section of this manual PAGE 10 184 REV 051117 TROUBLE SHOOTING GENERAL In most cases when the hydraulic winch does not perform satisfactorily the cause of malfunction is found somewhere in the hydraulic circuit Before the winch is removed from its mounting and disassembled all of the hydraulic circuit components should be checked for proper function IMPORTANT The hydraulic oil volume relates to the line speed or rpm of the winch Therefore if the winch does not produce the maximum rated line speed a loss of hydraulic flow somewhere in the hydraulic circuit system can be analysed If this condition exist
32. omponents of this unit are high torque low speed hydraulic motor multi disc brake with over running clutch planetary reduction brake housing cable drum final drive housing FUNCTION IN FORWARD ROTATION HOISTING In forward rotation the output torque and rpm of the hydraulic motor are transmitted through the brake shaft to the final sungear The planet gears are driven by the final sungear and cause the planet hub to drive the cable drum at a reduction of 9 25 1 When a load is raised an over running clutch which connects the motor drive shaft to the automatic brake assembly permits free rotation of the sungear without effecting the brake When the winch rotation is stopped the load on the cable drum causes the over running clutch to lock and the load is held safely by the disc brake FUNCTION IN REVERSE ROTATION LOWERING In reverse rotation hydraulic pressure from the reverse side of the hydraulic motor is channelled to the brake piston causing the brake piston to release the multi disc brake The over running clutch connecting the motor drive shaft to the brake assembly locks causing the brake discs to rotate between stationary divider plates If the load on the cable drum increases the pay out speed the resulting pressure drop in the brake piston increases friction between the friction plates and slows the drum In this way a completely smooth pay out speed can be achieved in a stepless operation by modulation
33. on therewith which are being purchased that Buyer has reviewed this Warranty and that the remedies provided hereunder are adequate and acceptable to Buyer This Warranty shall expire one 1 year from the date the article is first shipped by Seller Notice of claimed breach of this Warranty must be given by Buyer to Seller within the applicable period Such notice shall include an explanation of the claimed warranty defect and proof of date of purchase of the article or part thereof for which warranty coverage is sought No allowances shall be made by Seller for any transportation labor charges parts in and out costs adjustments or repairs or any other work unless such items are authorized in writing and in advance by Seller Nor shall Seller have any obligation to repair or replace items which by their nature are expendable an article is claimed to be defective in material or workmanship or not to conform to the applicable specifications Seller will either examine the article at Buyer s site or issue shipping instructions for return to Seller This Warranty shall not extend to any articles or parts thereof which have been installed used or serviced otherwise than in conformity with Seller s applicable specifications manuals bulletins or instructions or which shall have been subjected to improper installation operation or usage misapplication neglect incorrect installation overloading or employment for other than normal and ordinary
34. or adaptor are caused by damaged O ring seals Oil leaks occurring between the cable drum flanges and housings are caused by excessive pressure in the brake housing Excessive pressure will damage the oil seal which separates the brake housing from the cable drum interior If the breather relief on the end cover leaks the seal between the drum interior and the brake housing is damaged and must be replaced This condition is caused by excessive pressure in the brake housing of the winch operation with the incorrect hydraulic fluid during cold weather or a restriction in the circulation return line leading back to tank Refer to the SERVICE INSTRUCTIONS if it becomes necessary to disassemble the Model M6 winch mHa H Ja n i PAGE 12 184 REV 970901 SERVICE INSTRUCTIONS GENERAL Before attempting disassembly of the PULLMASTER Model M6 planetary winch the following instructions should be read and understood It is suggested that all expendable parts such as O rings and oil seals are not reused on reassembly Itis therefore important to have a winch seal kit Part No 23119 and providing the hydraulic motor has to be serviced a motor seal kit Part No 23118 on hand NOTE Backup washers may be included with seal kit Install with oil seals as per instructions If not present i
35. peration and performance If the winch is mounted to an uneven surface the centre line of the unit can be distorted to a point where the winch will not operate in either direction It is therefore very important that the following instructions are observed when PULLMASTER planetary winch is installed 1 Make certain that the mounting platform is sufficiently strong in order to avoid deflection when a load is lifted 2 Set the winch on the mounting platform and check for surface contact on all mounting pads of the winch 3 Ifthere is a space between the mounting surface and one of the mounting pads the mounting surface is not even and the space below the mounting pad must be shimmed If this condition exists proceed as follows a Install mounting bolts snugtightonthe three mounting pads which are in contact with the mounting surface For mounting bolt size and grade see INSTALLATION DIMENSIONS b Measurethe space underneath the fourth mounting pad with a feeler gauge and use shim stock of equivalent thickness in the space between the mounting pad and the mounting surface c Only after this procedure should the fourth mounting bolt be installed Tighten all four bolts per BOLT TORQUE CHART 4 Fill the winch with lubricating oil See APPENDIX A for oil volume required 5 Use recommended circuit components and hydraulic hoses 6 The circulation return line of the winch should be plumbed in such a manner that the brake housing remai
36. rves as an indicator or warning that the seals between brake housing and the cable drum interior have failed and must be replaced immediately PAGE 2 184 REV 961001 EXPLANATION OF MODEL CODING M 6 X XX XX X X XXXXX BASIC UNIT SERIES T M Equal speed in both directions SIZE OF UNIT OPTIONAL REDUCTION RATIO TYPE OF BRAKE 12 Automatic brake counterclockwise drum rotation intravent 13 External brake release automatic brake counterclockwise drum rotation intravent 14 External brake release automatic brake clockwise drum rotation intravent 15 Automatic brake clockwise drum rotation intravent HYDRAULIC MOTOR 70 NICHOLS 12 9 cubic inch displacement Other displacements are optional DRUM SIZE 2 71 2 inchdrum diameter X 11 3 8 inch flange diameter X 9 inch STANDARD For other drum sizes refer to APPENDIX A OPTIONS DESIGN REVISION SPECIFICATION NUMBER Describes features not identified by preceding codes NOTE Clockwise and counterclockwise drum rotation is the direction of rotation for pulling or hoisting established by looking at the hydraulic motor 184 REV 961001 PAGE 3 OPTIONS CLOCKWISE ROTATION The drum rotation of the standard PULLMASTER Model M6 planetary winch is counterclockwise for hoisting when looking at the hydraulic motor of the winch Drum rotation for clockwise hoisting direction is available as an option EXTERNAL BRAKE RE
37. s install a flow meter into the hydraulic circuit to check the volume supplied to the motor ports when the winch control is completely opened The flow meter should indicate the maximum operating volume If the test described indicates a loss of hydraulic flow check the hydraulic pump the relief valve and the control valve The hydraulic pressure relates to the line pull or lifting capacity of the winch If the winch will not pull the maximum rated load install a pressure gauge into the pressure line leading to the pulling port on the hydraulic winch motor Stallthe winch to prevent rotation ofthe drum and then open the control valve and check the hydraulic pressure reading of the installed pressure gauge If the pressure reads below the specified maximum operating pressure look for trouble in the hydraulic pump the relief valve and the control valve When checking oil pressure of oil volume anywhere in the hydraulic system make certain that the hydraulic pump is running at maximum operating rpm Installations using a belt drive for hydraulic pump must be checked for belt slippage Verify that hydraulic reservoir is filled to the top level Only if the hydraulic system has been checked and found tobe inorder usethe following indications for probable causes of failure in the winch FAILURE PROBABLE CAUSE Winch will not produce line pull at maximum Winch is mounted to an uneven surface see pressure as listed in SPECIFICATIONS INSTALLATION INST
38. the transaction s subject thereto and the Province of British Columbia shall be the exclusive forum and jurisdiction for any action or proceedings brought by Buyer in connection herewith or any dispute hereunder If any of the terms and conditions contained within this Warranty are void the remaining provisions thereof are and shall remain valid and enforceable SAFETY RECOMMENDATIONS Definition Caution indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury FAILURE TO COMPLY WITH THE FOLLOWING SAFETY RECOMMENDATIONS AND LOCAL RULES AND REGULATIONS WILL RESULT IN PROPERTY DAMAGE SEVERE INJURY OR DEATH Definition Warning indicates a potentially hazardous situation which if not avoided could result in death or serious injury Definition Danger indicates a potentially N hazardous situation which if not avoided will result in death or serious injury The planetary hydraulic winches are made for hoisting and lowering loads and to be operated by trained and professional personnel They are not designed for operations involving lifting or moving personnel The winches are powered by hydraulic power The ropes cables for hoisting operations are not supplied by PULLMASTER The winches are always assembled in an application they do not function as an independent machine and it is not allowed to use them as such The winches are to be used within the specifications as listed in the
39. unterclockwise hoisting winch must turn freely counterclockwise and lock in the clockwise direction 3 Install brake hub assembly through thrust washers item 615 and engage spline with final sungear item 340 INCORRECT ASSEMBLY OF THE FRICTION PLATE AND DIVIDER PLATE STACK WILL REDUCE BRAKING CAPACITY AND ALLOW THE LOAD TO DROP CAUSING PROPERTY DAMAGE SEVERE INJURY OR DEATH REASSEMBLE PER INSTRUCTIONS 4 Install brake spacer item 712 into brake housing Starting and finishing with a divider plate alternately install 14 divider plates item 713 and 13 friction plates item 715 5 Liberally grease O ring item 751 and O ring item 753 and install on the brake piston item 750 PAGE 16 184 REV 970901 SERVICE INSTRUCTIONS continuep Carefully insert the brake piston into the brake housing and turn the piston to line up the bore for the connecting tube item 830 with the bore in the motor item 850 Install the eight brake springs item 752 Install new well greased O ring item 707 on motor adaptor pilot item 800 Position motor adaptor with hydraulic motor mounting holes horizontal and the connecting tube holes of the piston aligned with motor adaptor Tighten six capscrews item 821 and lockwashers item 823 one turn at a time to evenly compress springs REPLACEMENT OF HYDRAULIC MOTOR ASSEMBLY 1 Install new O rings item 831 on each end of the connecting tube item 830 and apply grease liberally Insert th
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