Model M25 Free Fall Service Manual
Contents
1. EMERGENCY FREE FALL HC M25 X XX XD B FREEFALL CIRCULATION RETURN H BRAKE 8 lt CIRCULATION 5 5 USGPM 0 1000 PSI d 19 L MIN PRESSURE GAUGE oo EXTERNAL 8 CIRCULATION d MODELS ONLY Lilt 1 FREEFALL CIRCULATION 2 USGPM 8 L MIN FREEFALL CLUTCH RELEASE fe M 750 PSI 52 BAR CONTROL VALVE MOTOR SPOOL 4 WAY SPRING RETURN TO CENTER PRESSURE RELIEF VALVE p BRAKE CIRCULATION lt lt gt FILTER RETURN DIRECT TO RESERVOIR E HYDRAULIC PUMP RESERVOIR RE ENGAGING FREE FALL CLUTCH WHILE LOAD IS DROPPING CAUSES SHOCK LOADS AND WILL LEAD TO CABLE FAILURE PROPERTY DAMAGE SEVER INJURY OR DEATH INTERLOCK HYDRAULIC CONTROL TO PREVENT RE ENGAGING FREE FALL CLUTCH WHILE LOAD IS DROPPING PAGE 8 261 REV 970701 TYPICAL HYDRAULIC CIRCUIT HC M25 X 86 XC CONTROLLED FREE FALL FREEFALL CIRCULATION RETURN puce i l q 1 zi e OO d2. 7 875 899 929 951 Group drawings may reference more parts than are actually present in a specific assembly Parts that referenced on the drawing but are not on the PART REFERENCE list should be ignored 261 REV 970701 PAGE 33 11004 1 E QJ VIG 0 NO SHIM VIG 8 4 91 4 HOS 318v LIns SI 318vO GHVGNVLS dN 81 8 LHOd NOLLWINOYIO 11 2384 O dO1ON 16 s 9 Li INO STAGOW Z TWNHYALX3 LdN 81 8 6 LHOd 531138 HO S 51108 Addns NOIL V InOHIO LAN 35 1908 1 s ze vid 26 6 81 r L LHOd NOLLVINOUIO Sd OH ONILNNON 5 HOLM LAN 1 S1HOd 39nv9 3yVHg 1HOd S Gol ____ 3 la H 3 l LAN Z2 8 L E 1HOd 3svaau TVNH31X3 WNOLL
3. Avi MASTER THE LOGICAL CHOICE INSTRUCTION AND PARTS MANUAL MODEL M25 FREE FALL 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 261 120612 POVER e Mav Shi MONA 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
4. Only after this procedure should the fourth mounting bolt be installed Tighten all four bolts per BOLT TORQUE CHART Fill the winch with lubricating oil Gee APPENDIX A for oil volume required Use recommended circuit components and hydraulic hoses The circulation return line of the winch should be plumbed in such a manner that the brake housing and free fall housing remain full of oil at all times Connect the return lines directly to reservoir Do not connect to a common return line Bleed the air out of the free fall control circuit by loosening the connection at the free fall release port on the winch With no load on the cable drum operate the free fall control valve letting all air escape then re tighten the connection at the release port Before operating the winch with a load verify adequate circulation flow through the circulation return line as stated in TYPICAL HYDRAULIC CIRCUIT Verify that pressure measured at the circulation supply port does not exceed the permissible pressure stated in SPECIFICATIONS Winches equipped with the internal circulation option will supply circulation flow only when the winch is run in the lowering direction 261 REV 970701 PAGE 13 OPERATING INSTRUCTIONS FAILURE TO FOLLOW OPERATING INSTRUCTIONS WILL RESULT IN PROPERTY DAMAGE SEVERE INJURY OR DEATH After the PULLMASTER planetary winch has been installed in accordance with the INSTALLATION INSTRUCTIONS the wire rope can be fastened to t
5. on each side of gear housing item 861 Slide gear housing together with gasket seals onto motor adaptor lined up on two dowel pins Tap on tight using a soft headed hammer 4 Install gear set item 881 in gear housing the longer gear with the internal spline goes into the top position 5 Press other thrust plate complete with two new teflon seals onto bearings installed in port end cover 6 Install port end cover item 870 together with two bearings item 875 and new ring seal item 877 onto gear housing lined up on two dowel pins item 865 Tap on tight using a soft headed hammer Install and lightly torque eight hex capscrews item 951 and lockwashers item 953 to approximately 50 ft Ib 70 Nm 7 Plumb winch assembly to a hydraulic supply and torque motor capscrews according to the following procedure Ensure that circulation supply flow is being supplied to the brake housing Run the winch with no load in the hoisting direction at reduced speed approximately 3096 of maximum hydraulic volume With winch running evenly tighten eight capscrews item 951 to 200 ft Ib 270 Nm Test motor operation by running winch at full speed in both directions IMPORTANT Before operating the winch add lubricating oil through the cable drum oil fill port Refer to INSTALLATION INSTRUCTIONS for location of fill port Refer to APPENDIX A for oil volume required To ensure proper reassembly run the winch in both directions wit
6. 4 5 6 143 2 7 68 207 3 00 762 7 6 196 2 7 68 261 REV 110817 PAGE 35 ASSEMBLY DRAWING G1001 B amp G1002 D amp G1008 F PAGE 36 261 REV 970701 APPENDIX A MAXIMUM LINE PULL HOISTING ALLOWABLE LUBRICAT ATMAXIMUM LINE SPEED LOAD FOR ING CABLE DRUM SIZES WIRE ROPE STORAGE PRESSURE AT MAXIMUM OIL INCHES FEET HOISTING VOLUME CONTROLLED voruwE MILLIMETERS METERS OR REQUIRED POUNDS FEET MINUTE COMBINED KILONEWTONS METERS MINUTE FREE FALL 4 NS POUNDS LITERS 25000 111 2 25000 111 2 25000 111 2 25000 111 2 25000 111 2 25000 111 2 17629 78 4 17629 78 4 19595 87 2 Performance specifications are based on standard hydraulic motor with 7 8 inch diameter rope 261 REV 021029 PAGE 37 ITEM APPENDIX B 210 530 550 552 DRUM CODE FREE FALL COUPLING CABLE DRUM BEARING FLANGE BASE PAGE 38 261 REV 980715 APPENDIX C TYPE OF FREE FALL DESCRIPTION CONTROLLED C EMERGENCY D PLASTIC CAPLUG 1 4NPT 25395 N A PIPE ELBOW 1 4 NPT 25538 N A PLASTIC CAPLUG 1 4 NPT N A 25395 PIPE TEE 1 4 NPT 25552 N A METERING TUBE SEE APPENDIX D N A METERING PUMP SEE APPENDIX D N A SUB ASSEMBLY END CAP N A 261 REV 970701 PAGE 39 APPENDIX D PART N
7. AND 801 This part varies with drum code Refer to APPENDIX B Refer to PAGE 36 for ASSEMBLY DRAWING PAGE 30 261 REV 110817 BRAKE GROUP G1001 B 700 753 707 Group 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 PART REFERENCE list should be ignored 261 REV 970701 PAGE 31 PARTS REFERENCE MOTOR GROUP ITEM NO PART NO DESCRIPTION 12 CAPSCREW HEX HEAD 1 2 13 NC X 1 5 GRADE 5 LOCKWASHER 1 2 MOTOR DRIVE SHAFT CIRCLIP ROTOR CLIP C 112 MOTOR ADAPTOR O RING 90 DURO 013 7 16 ID 1 16 CS PIPE PLUG 1 8 27 NPT PIPE PLUG 1 4 18 NPT GEAR HOUSING DOWEL PIN SEAL GASKET PORT END COVER BEARING ROLLER SEAL RING GEAR SET THRUST PLATE SEAL TEFLON PIPE PLUG 1 4 18 NPT SUB ASSY MOTOR CAPSCREW HEX HEAD 5 8 X 6 75 GRADE 5 WASHER PLASTIC CAPLUG 2 0 1 1 1 3 1 2 1 1 1 1 1 4 2 1 4 2 1 2 4 2 1 1 8 8 2 MOTOR SEAL KIT CONTAINS ITEMS 869 877 AND 887 These part numbers and descriptions vary according to brake code Refer to APPENDIX D ITEM 950 MOTOR SUB ASSY CONSISTS OF ITEMS 800 802 805 806 807 809 813 861 865 869 870 875 877 881 885 887 899 929 951 953 AND 955 Refer to PAGE 30 for winch seal kit and PAGE 36 for ASSEMBLY DRAWING PAGE 32 261 REV 980701 MOTOR GROUP Tm G1002 D
8. 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 Consult lubricating oil supplier or factory for temperatures beyond normal operating range The final drive of the winch is lubricated by the hydraulic oil which is circulated through the free fall housing HYDRAULIC PUMP For maximum performance of the PULLMASTER planetary winch the hydraulic pump must supply the maximum flow of hydraulic fluid atthe hydraulic pressure stated in SPECIFICATIONS HYDRAULIC WINCH 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 important to 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 apressure relief is part of the hydraulic control valve Where this isnot the case aseparate pressure relief valve must be installed and set at the recommended maximum pressure HYDRAULIC R
9. as listed in the 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 14 Verify gear lubrication and brake circulation supply and return before operating winch Do not weld any part of the winch 15 Besure 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 oi
10. connection 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
11. flow the oil filter should have a by pass feature 261 REV 021029 PAGE 11 RECOMMENDATIONS continuep EMERGENCY FREE FALL CONTROL VALVE The emergency free fall requires a two position three way valve The pressure port must be open to the reservoir when the emergency free fall is not actuated and must pressurize the free fall release port on the winch when the free fall control button is pressed A selector valve with two detent positions is best suited If the emergency free fall is combined with controlled free fall a standard two position four way selector valve with two detents should be used Refer to TYPICAL HYDRAULIC CIRCUIT CONTROLLED FREE FALL CONTROL VALVE For positive speed control the valve used for the controlled free fall must be a spring return two position selector valve which has good metering characteristics and on which the pressure port is open to the reservoir when the controlled free fall is not operating PRESSURE GAUGE To monitor free fall release port pressure install a 1000 psi 69 bar pressure gauge between the free fall control valve and the release port IMPORTANT The circulation return lines must go direct to reservoir Pressure in the free fall housing must not be permitted to exceed 10 psi 7 bar USE OF AN E 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
12. in the operator s control panel The E stop must be designed and placed in line with EN 60204 and EN 418 PAGE 12 261 REV 980701 INSTALLATION INSTRUCTIONS FAILURE TO FOLLOW INSTALLATION INSTRUCTIONS WILL RESULT IN PROPERTY DAMAGE SEVERE INJURY OR DEATH The initial installation or mounting of aPULLMASTER planetary winch is critically important for proper operation 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 a PULLMASTER planetary winch is installed Make certain that the mounting platform is sufficiently strong in order to avoid deflection when a load is lifted Set the winch on the mounting platform and check for surface contact on all mounting pads of the winch If there 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 snug tight on the three mounting pads which are in contact with the mounting surface For mounting bolt size and grade see INSTALLATION DIMENSIONS b Measure the 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
13. oo 0 1000 PSI PRESSURE GAUGE Y CONTROL VALVE l MOTORSPOOL r SPRING RETURN CIRCULATION TO NEUTRAL 5 USGPM PORT B PLUGGED 19 L MIN FREEFALL y EXTERNAL CIRCULATION CIRCULATION T FN CONTROL VALVE MODELS ONLY MOTOR SPOOL 4 WAY SPRING RETURN TO 2 5 USGPM d CENTER 9 LPM RELIEF VALVE 750 PSI 52 BAR Y x _ e I 2671 RELIEF VALVE 5 2500 PSI zu 172 BAR f FLOW DIVIDER PRESSURE amp BRAKE CIRCULATION lt gt FILTER TEMPERATURE RETURN DIRECT TO COMPENSATED RESERVOIR I HYDRAULIC PUMP RESERVOIR 261 REV 950501 PAGE 9 TYPICAL HYDRAULIC CIRCUIT COMBINED EMERGENCY amp CONTROLLED FREE FALL HC M25 X 86 XG FREEFALL CIRCULATION 6 040000000000 RETURN 1 0 1000 PSI PRESSURE GAUGE BRAKE CIRCULATION CONTROL VALVE 5 nde 5 USGPM WITH METERING A 19 L MIN So mem EXTERNAL TO NEUTRAL PORT PLUGGED Y 9 USGPM CIRCULATION TIP 34 LPM CONTROL VALVE MODELS ONLY MOTOR SPOOL 4 WAY SPRING CONTROL VALVE RETURN TO CENT
14. ordinary 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 failu
15. 13 Oil leaking out of the end cap indicates a damaged O ring item 241 Refer to the SERVICE INSTRUCTIONS if it becomes necessary to disassemble the Model M25 winch with free fall 18 261 REV 950501 SERVICE INSTRUCTIONS GENERAL Before attempting disassembly of the PULLMASTER Model M25 planetary winch with free fall the following instructions for disassembly and reassembly should be read and understood It is suggested that all expendable parts such as O rings and oil seals are not reused on reassembly It is therefore important to have a seal kit Part No 23115 and providing the hydraulic motor has to be serviced a seal kit Part No 23117 on hand before the unit is taken apart Two new needle bearings item 875 may also be required Part No 25352 NOTE Backup washers may be included with seal kit Install with oil seals as per instructions If not present in 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 component All parts as they are removed from the winch assembly should be inspected for wear and damage Worn or damaged parts must be replaced Thoroughly clean parts before reassembly Do not use solvent to clean the brake friction plates During reassembly lubricate all O rings and oil seals with grease before in
16. 261 REV 970701 PAGE 23 SERVICE INSTRUCTIONS conrtinuep 9 Place brake plate item 206 against divider plate lining up teeth onto teeth of clutch connecting shaft item 220 Alternate remaining divider and brake plates finishing stack with a divider plate 10 Install new well greased O ring item 233 into O ring groove in free fall housing item 200 Install new well greased O ring item 231 onto clutch piston item 230 11 Carefully press clutch piston item 230 into free fall housing item 200 If a hoist is available piston can be supported using two 5 8 11NC eyebolts 12 Place 88 springs item 232 into holes in clutch piston 13 Install new well greased O ring item 213 into groove on end of spring retainer item 212 Slide spring retainer complete with bearing retainer item 214 onto bearing item 215 14 Fasten spring retainer to free fall housing using 16 socket head capscrews item 207 along with 16 high collar lockwashers item 217 Fasten capscrews one turn at a time to compress 88 springs 15 Slide final internal gear item 330 onto spline of clutch connecting shaft item 220 and fasten with circlip item 331 16 Install final sungear item 340 through journal bearing item 510 and twist to engage spline with free fall coupling item 210 17 Install final planet assembly into clutch connecting shaft item 220 and engage spline of drum coupling item 302 as well as gears of final internal gear
17. 431 off end of connecting shaft and slide internal gear item 430 along with internal gear spacer item 434 off of connecting shaft spline PAGE 22 261 REV 021029 SERVICE INSTRUCTIONS conrtinuep 7 Connecting shaft item 600 may now be pulled out of brake housing and O ring item 601 discarded Inspect needle bearing item 603 and remove and replace if necessary 8 To separate bearing flange item 530 and brake housing item 700 use a standard bearing puller or insert two heel bars in the slot between bearing flange and brake housing and pry brake housing out of ball bearing item 533 9 Remove internal retaining ring item 534 to remove ball bearing item 533 Remove and discard oil seal item 531 10 To separate free fall housing item 200 and cable drum item 500 first remove external circlip item 513 off end of cable drum then insert two heel bars in slot between final drive housing and cable drum and pry cable drum out of ball bearing item 103 11 Remove internal retaining ring item 104 to remove ball bearing item 103 Remove and discard oil seal item 105 this seal separates interior of free fall housing and interior of cable drum The PULLMASTER Model M25 with free fall has now been completely disassembled REASSEMBLY Thoroughly clean all parts Use only new well greased O rings and oil seals Unless otherwise specified torque fasteners per BOLT TORQUE CHART at back of manual If the entire winch was
18. ASE 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 M25 planetary winch with free fall can be supplied with optional drums to accommodate large wire rope storage capacity DRUM GROOVING Cable drums for the PULLMASTER Model M25 planetary winch with free fall 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 GEAR SECTION FOR THE HYDRAULIC MOTOR The performance of the PULLMASTER Model M25 planetary winch with free fall can be changed by using a different displacement motor Contact the factory for performance information of different gear sections HYDRAULIC MOTORS FOR HIGH PRESSURE HYDRAULIC SYSTEMS The operating pressure of the PULLMASTER Model M25 planetary winch with free fall is limited to 2500 psi 172 bar For hydraulic systems operating with a higher range of hydraulic pressure the winch can be supplied with a hydraulic piston motor which will provide for the same basic performanc
19. DIX C FINAL PLANET PIN CIRCLIP ROTOR CLIP SH 168 CIRCLIP ROTOR CLIP SH 168 FINAL PLANET GEAR THRUST WASHER TORRINGTON TRB 2840 LOOSE ROLLER TORRINGTON G613 Q FINAL INTERNAL GEAR CIRCLIP ROTOR CLIP SH 625 FINAL SUNGEAR CIRCLIP ROTOR CLIP SH 206 SUNGEAR STOPPER CABLE DRUM CABLE ANCHOR PIPE PLUG 1 2 14 NPT OIL SEAL BACK UP WASHER FOR OIL SEAL 25597 JOURNAL BEARING CIRCLIP ROTOR CLIP SH 475 CAPSCREW HEX HEAD 1 2 18NC X 1 50 GRADE 5 LOCKWASHER 1 2 BASE CAPSCREW HEX HEAD 5 8 11NC X 1 75 GRADE 5 BASE LOCKWASHER 5 8 PLASTIC CAPLUG 1 11 5 NPT Refer to PAGE 30 for winch seal kit and PAGE 36 for ASSEMBLY DRAWING PAGE 28 261 REV 110817 FINAL DRIVE GROUP 220 212 537 541 302 510 185 230 171 183 203 215 506 703 222 553 203 179 181 550 551 513 500 552 121 e o N 10 N 10 e N N N e N N N N o e N e e N e N e N N N N e N e N N N e e o e e N e e N e 340 121 300 Metering pump connection is shown for clockwise hoisting winch For counterclockwise hoisting connect metering tube to alternate port on metering pump and use metering tube item 216A Refer to Appendix E Group drawings may reference more parts than are actually present in a specific assembly
20. ER WITH PUSH oy L D BUTTON AND TWO DETENTS E Jr Tal 2 5 USGPM Da 9 LPM RELIEF VALVE 750 PSI 52 RELIEF VALVE bc cssc 2500 PSI D 172 BAR cd FLOW DIVIDER LL PRESSURE amp BRAKE CIRCULATION gt FILTER TEMPERATURE RETURN DIRECT TO COMPENSATED RESERVOIR to HYDRAULIC PUMP RESERVOIR PAGE 10 261 REV 950501 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
21. ER WINCH CORPORATION reserves the right to change specifications and the design of PULLMASTER planetary winches at any time without prior notice and without incurring any obligations 261 REV 980701 PAGE 27 PARTS REFERENCE FINAL DRIVE 1 1 1 2 1 1 1 1 1 1 1 6 6 1 1 1 6 0 9 6 1 1 2 1 2 1 6 1 1 1 1 1 8 1 1 1 1 1 1 1 1 1 1 3 3 3 3 6 2 1 1 1 1 1 1 1 1 1 1 1 1 BALL BEARING 120 x 180 x 28 6024 BEARING RETAINER OIL SEAL PIPE PLUG 3 4 14 NPT PLANET HUB STOPPER PIPE COUPLING 3 8 NPT PIPE NIPPLE 3 8 NPT X 7 L PIPE PLUG 1 4 18 NPT CAPSCREW HEX HEAD 7 16 14NC X 1 25 GRADE 5 LOCKWASHER 7 16 FREE FALL HOUSING PIPE PLUG 1 11 1 2 NPT CLUTCH SPACER PIPE PLUG 3 8 18 NPT DIVIDER PLATE FRICTION PLATE CAPSCREW SOCKET HEAD 5 8 11NC X 2 25 GRADE 5 FREE FALL COUPLING SPRING RETAINER O RING 387 18 ID 3 16 CS BEARING RETAINER BALL BEARING 160 X 200 X 20 61832 LOCKWASHER 5 8 HI COLLAR CLUTCH CONNECTING SHAFT BEARING HOLDER SLOTTED SPRING PIN 3 16 DIA X 3 4 L CLUTCH PISTON O RING 90 DURO 465 18 ID 1 4 CS CLUTCH SPRING O RING 90 DURO 463 17 ID 1 4 CS SLOTTED SPRING PIN 3 32 DIA X 3 4 L END COVER O RING 159 5 ID 3 32 CS METERING PUMP CONNECTOR These parts vary with drum code SLOTTED SPRING PIN 5 82 X 1 L Refer to APPENDIX B STOPPER FINAL PLANET HUB These parts vary with free fall option DRUM COUPLING Refer to APPEN
22. ESERVOIR It is recommended that the hydraulic reservoir has sufficient capacity to provide good heat dissipation in order to 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 the return lines from the suction line and return lines should enter the 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 M25 planetary winch with free fall Pressure lines Circulation return line Circulation supply line Free fall release line Equivalent to SAE 100R 12 32 Equivalent to SAE 100R 4 16 Equivalent to SAE 100R 6 6 Equivalent to SAE 100R 3 4 It is 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 of the PULLMASTER planetary winch based on a return line filter are given as follows 10 microns 5 microns Average Atmosphere Dusty Atmosphere In order to prevent accidental stoppage of the return line
23. On wire rope installation care must be taken that wire 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 control 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 ambient temperature 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 PAGE 14 261 REV 051117 OPERATING INSTRUCTIONS continuep EMERGENCY FREE FALL To actuate the emergency free fall push the emergency free fall control to disconnect the cable drum from the gear train of the wi
24. Parts that are referenced on the drawing but are not on the PART REFERENCE list should be ignored ccrrr rr r P 261 REV 970701 PAGE 29 PARTS REFERENCE BRAKE GROUP PLANET HUB RETAINING RING PLANET PIN CIRCLIP ROTOR CLIP C 87 CIRCLIP ROTOR CLIP SH 87 PLANET GEAR THRUST WASHER TORRINGTON TRA 1423 LOOSE ROLLER 5 32 X 1 25 TOR 151 Q INTERNAL GEAR CIRCLIP ROTOR CLIP SH 300 SPACER SUNGEAR SUNGEAR STOPPER BEARING FLANGE OILSEAL BALL BEARING 6026 BEARING RETAINER CAPSCREW HEX HEAD 1 2 18NC X 1 50 GRADE 5 O RING 269 8 3 4 ID 1 8 CS LOCKWASHER 1 2 CONNECTING SHAFT O RING 239 3 5 8 ID 1 8 CS NEEDLE BEARING TORRINGTON B2812 BACKUP WASHER OIL SEAL BRAKE HOUSING PLASTIC CAPLUG 1 NPT O RING 278 12 ID 1 8 CS BRAKE SPACER DIVIDER PLATE FRICTION PLATE CIRCLIP ROTOR CLIP SH 187 BRAKE HUB SPRAG CLUTCH ALIGNER SPRAG CLUTCH BORG WARNER 140373 B SPRAG CLUTCH ALIGNER CIRCLIP ROTOR CLIP SH 196 PLUG O RING 123 1 3 16 ID 3 32 CS PISTON O RING 90 DURO 451 11 ID 1 4 CS BRAKE SPRING O RING 90 DURO 452 11 1 2 ID 1 4 CS 3 3 3 3 6 0 1 1 1 1 1 1 1 1 1 6 1 6 1 1 1 1 1 1 1 1 1 6 5 1 1 1 1 1 1 1 1 1 1 4 1 WINCH SEAL KIT CONSISTS OF ITEMS 105 213 231 233 241 505 506 531 539 601 606 607 707 735 751 753
25. RE AT MOTOR RETURN PORT 65 psi 4 5 bar PERMISSIBLE PRESSURE AT CIRCULATION SUPPLY PORT Brake housing 30 psi 2 bar Free fall housing 30 psi 2 bar LUBRICATING OIL Refer to RECOMMENDATIONS for viscosity and instructions Refer to APPENDIX A for oil volume required SS PAGE 6 261 REV 010611 PERFORMANCE GRAPHS PG M25 B MAXIMUM ALLOWABLE LINE PULL WHEN USING LINE PULL VS OIL PRESSURE CONTROLLED FREE FALL Bare drum 7 500 Ib 33 4 kN Full drum 5 289 Ib 23 5 kN LINE PULL kN 0 22 44 67 89 111 2500 172 2 2000 138 S LLI LLI 1500 103 m 1000 69 A E 500 J o Fu I L p 0 5000 10000 15000 20000 25000 LINE PULL Ib LINE SPEED VS OIL VOLUME LINE SPEED m min 0 6 12 18 24 30 36 42 48 54 63 125 mr 0 3 100 379 2 L 1 Eck 75 284 LL gt F 50 E 189 O O gt gt 25 95 _ 0 mi fe l 0 20 40 60 80 100 120 140 160 180 207 LINE SPEED fpm Performance graphs are based on standard hydraulic motor gear ratio and cable drum with 7 8 inch diameter wire rope 261 REV 010611 PAGE 7 TYPICAL HYDRAULIC CIRCUIT
26. UMBERS BRAKE CODE PART DESCRIPTION 6 7 METERING TUBE ASSEMBLY METERING TUBE ASSEMBLY METERING PUMP SUB ASSEMBLY SHUTTLE CIRCULATION VALVE 1 4 18 NPT PIPE PLUG 1 8 27 NPT PIPE PLUG 1 8 NPT PIPE ADAPTOR 1 8 NPT CAPLUG 3 8 NPT CAPLUG 3 8 18 NPT PIPE PLUG MOTOR 86 PAGE 40 261 REV 970701 APPENDIX E SI 1046 CONNECT METERING TUBE ITEM 216A TO THIS PORT FOR CCW HOISTING CA d LY ID END VIEW OF METERING PUMP ITEM 242 261 REV 970701 PAGE 41 BOLT TORQUE CHART BOLT DIAMETER TORQUE TORQUE Inches lb ft Nm NOTE Unless otherwise specified torque bolts per above chart PAGE 42 261 REV 970701
27. aims by 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 Warra
28. articularly surfaces where sprag clutch item 723 engages If any indentation or surface damage is detected replace brake hub sprag clutch and motor drive shaft as a set 5 Pull brake piston item 750 out of brake housing using two 5 8 11NC bolts screwed into two puller holes in piston Discard O rings item 751 and item 753 6 Thoroughly examine inner bores of brake housing and outer diameters of brake piston for scoring caused by hydraulic fluid contamination Minor surface damage may be repaired by polishing with a fine emery cloth DAMAGED FRICTION OR DIVIDER PLATES WILL REDUCE BRAKING CAPACITY AND ALLOW THE LOAD TO DROP CAUSING PROPERTY DAMAGE SEVERE INJURY OR DEATH SOLVENT MAY DAMAGE THE FRICTION PLATES DO NOT USE SOLVENT TO CLEAN THE FRICTION PLATES PERFORM THOROUGH INSPECTION AND IF NECESSARY REPLACE FRICTION AND DIVIDER PLATES AS A SET PAGE 20 261 REV 980701 SERVICE INSTRUCTIONS conrtinuep 7 Remove five friction plates item 715 together with six divider plates item 713 and inspect for damage or wear Plates should be flat and smooth Plates should not show heat discoloration Paper material on friction plates should be intact and grooved If any damage is detected replace friction and divider plates as a set 8 Remove brake spacer item 712 9 Oil seal item 607 and backup washer item 606 which seals brake housing from cable drum interior can now be removed and discarded All parts have now been r
29. dO 3715 LHOd 3uuva 1 HOLOMW 33S NO HO 133100d HOHONV 3 18VO NI 3SIMM2019 mra i s Sos O19 vi Z L az HOJ 3zlunssatid ze 1HOd ded GN vie 4 9 NOILVTnOHIO 1HOd 3ATVA AL34VS i S3INLL TIY LV TT Q3NIV LNIVIN 38 LSNW 3dOH SdVHYMSAOWNWININY ALSAVS 803 AZIHYNSSAYd 261 REV 051117 PAGE 34 INSTALLATION DIMENSIONS Dimensions in inches Dimensions in millimeters 8 18 500 39 9 17 750 20 8 Dimensions in inches Dimensions in millimeters HYDRAULIC MOTORS COMMERCIAL WM76 SERIES COMMERCIAL M365 SERIES MOTOR CODE GEAR WIDTH MOTOR PORT SIZE SAE SPLIT FLANGE MOTOR CODE GEAR WIDTH MOTOR PORT SIZE SAE SPLIT FLANGE 86 3 00 76 2 87 2 75 69 9 7 6 194 2 7 68 42 2 50 63 5 7 4 187 2 7 68 101 2 25 57 2 88 2 50 63 5 89 2 25 57 2 90 2 00 50 8 7A 181 2 7 68 102 2 00 50 8 8 0 203 7 8 197 7 5 191 6 9 175 2 7 68 6 6 168 2 7 68 91 1 75 44 5 92 1 50 38 1 93 1 25 31 8 6 4 162 2 7 68 6 1 156 2 7 68 5 9 149 2 7 68 94 1 00 25
30. daptor it is recommended that hex capscrews are unscrewed one turn at a time until spring pressure has been released The complete motor assembly including motor adaptor can now be removed from brake housing assembly 2 Remove and discard three O rings item 801 and O ring item 707 O rings item 801 seal pressure transfer hole for automatic brake release and are situated on flange of brake housing DISASSEMBLE BRAKE HOUSING ASSEMBLY 1 After motor assembly has been removed all parts of brake assembly are accessible Remove 14 brake springs item 752 Thoroughly examine springs for damage and measure overall length Overall spring length should be 2 27 inches If any spring measures less than 2 21 inches replace all springs as a set 2 Pull motor drive shaft item 730 and complete brake hub assembly from brake housing 3 Disassemble brake hub assembly by removing circlip item 719 from motor drive shaft Remove motor drive shaft from brake hub item 720 Remove sprag clutch aligners items 722 and 724 and sprag clutch item 723 from brake hub MINOR SURFACE DEFECTS WHERE THE SPRAG CLUTCH ENGAGES THE MOTOR DRIVE 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 MOTOR DRIVESHAFT SPRAG CLUTCH AND BRAKE HUB AS A SET 4 Thoroughly inspect motor drive shaft item 730 and brake hub item 720 p
31. disassembled start by reassembling the free fall end without the metering pump first Turn the cable drum up on end so that the splined end is up REASSEMBLY OF FINAL DRIVE Reassemble final drive end of winch as follows 1 Insert new back up washer item 506 and new oil seal item 505 together into bore in cable drum until back up washer stops against edge in bore the second edge 2 Carefully press journal bearing item 510 into bore of cable drum until it comes into contact with the first edge 3 If free fall housing was removed press in new oil seal item 105 and bearing item 103 if removed Re install circlip item 104 4 Press free fall housing item 200 onto splined end of cable drum and install circlip item 513 5 Press bearing holder item 222 along with spring pin item 223 into free fall housing item 200 turned so that pin lines up with slot in the top of bore 6 Slide drum coupling item 302 onto spline of cable drum 7 Gently tap clutch connecting shaft item 220 with two bearings item 215 into place over bearing holder item 222 8 Setclutch spacer item 202 into free fall housing and place a divider plate item 204 againstit lining up teeth with those inside of free fall housing 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
32. e diameters of free fall housing for surface scratches due to contamination resulting from particles in the hydraulic fluid If there is any evidence of surface damage polish with fine emery cloth 15 Pull clutch connecting shaft item 220 out of free fall housing along with two bearings item 215 DAMAGED FRICTION OR DIVIDER PLATES WILL REDUCE BRAKING CAPACITY AND ALLOW THE LOAD TO DROP CAUSING PROPERTY DAMAGE SEVERE INJURY OR DEATH SOLVENT MAY DAMAGE THE FRICTION PLATES DO NOT USE SOLVENT TO CLEAN THE FRICTION PLATES PERFORM THROUGH INSPECTION AND IF NECESSARY REPLACED FRICTION AND DIVIDER PLATES AS A SET 16 Remove 9 friction plates item 206 together with 10 divider plates item 204 and inspect for damage or wear Plates should be flat and smooth Plates should not show heat discoloration Paper material on friction plates should be intact and grooved If any damage is detected replace friction and divider plates as a set Remove clutch spacer item 202 17 18 Pull drum coupling item 302 off splined end of cable drum item 500 19 20 Remove journal bearing item 510 from bore in cable drum and inspect for damage or excessive wear Pry bearing holder item 222 along with spring pin item 223 out of free fall housing item 200 21 Remove and discard oil seal item 505 and back up washer item 506 All parts have now been removed from inside the free fall assembly If further disassembly is required p
33. e in terms of line pull and line speed capacity Contact the factory for this requirement The PULLMASTER WINCH CORPORATION will consider other options for quantity requirements 261 REV 970701 PAGE 5 SPECIFICATIONS Performance specifications are based on standard hydraulic motor gear ratio and cable drum with 7 8 inch diameter wire rope For other cable drums refer to APPENDIX A For other reductions or motors refer to supplement inside back cover Performance specifications for winches supplied with optional motors are provided in attached supplement CABLE DRUM DIMENSIONS STANDARD DRUM Barrel diameter 10 00 in 254 mm Flange diameter 17 00 in 432 mm Barrel length 11 00 in 279 mm CABLE STORAGE CAPACITY Size of wire rope 7 16 in 612 ft 186m 1 2 in 486 ft 148m 9 16 in 383 ft 117m 5 8 in 297 ft 90m 3 4 in 210 ft 64m 7 8 in 140 ft 43 1in 91 ft 28m MAXIMUM OPERATING PRESSURE 2500 psi 172 bar MAXIMUM OPERATING VOLUME 115 US gpm 435 l min MINIMUM OPERATING VOLUME 30 US gpm 114 l min DRUM TORQUE AT MAXIMUM PRESSURE 135 937 Ib in 15 359 Nm DRUM RPM AT MAXIMUM VOLUME Hoisting 49 rpm HOISTING LINE PULL AT MAXIMUM PRESSURE Bare drum 25 000 Ib 111 2 kN Full drum 16 860 Ib 75 0 kN MAXIMUM ALLOWABLE LINE PULL WHEN USING CONTROLLED FREE FALL Bare drum 7 500 Ib 33 4 kN Full drum 5 289 Ib 23 5 kN HOISTING LINE SPEED AT MAXIMUM VOLUME Bare drum 140 fpm 43 m min Full drum 207 fpm 63 m min PERMISSIBLE SYSTEM BACK PRESSU
34. e in the brake housing be permitted to exceed 30 psi 2 bar 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 PRIOR TO OPERATION OF THIS UNIT ALWAYS ENSURE COMPLIANCE WITH ANY NATIONAL OR LOCAL SAFETY CODES AND REGULATIONS REGARDING THE USE OF FREE FALL WINCHES PAGE 2 261 REV 040708 DESCRIPTION OF THE MODEL M25 WITH FREE FALL CONTINUED EMERGENCY FREE FALL The emergency free fall is used for a full release of a suspended load up to the maximum load capacity of the Model M25 planetary winch Upon acitivating the emergency free fall function the load will drop and must be allowed to fall to its end travel without re engagement RE ENGAGING FREE FALL CLUTCH WHILE LOAD IS DROPPING CAUSES SHOCK LOADS AND WILL LEAD TO CABLE FAILURE PROPERTY DAMAGE SEVERE INJURY OR DEATH INTERLOCK HYDRAULIC CONTROL TO PREVENT RE ENGAGING FREE FALL CLUTCH WHILE LOAD IS DROPPING FUNCTION OF THE EMERGENCY FREE FALL When the Model M25 planetary winch is actuated for emergency free fall hydraulic pressure is channelled to the clutch piston causing the clutch piston to press against a series of springs and release the multi disc clutch This effectively disconnects the cable drum from the gear train of the winch and any suspended load will drop The minimum load required to establish the emergency free fall m
35. earings item 875 and discard pocket seals item 887 4 Remove gear set item 881 which consists of two gears which are a matched set 5 Carefully pry gear housing item 861 off of motor adaptor item 800 Thrust plate item 885 and dowel pins item 865 may stay in gear housing 6 If thrust plate stays on motor adaptor carefully pry it off of bearings item 875 and discard teflon seals item 887 7 Discard gasket seals item 869 It is also advisable to replace ring seals item 877 at this time Bearings item 875 must be removed to allow access to ring seals Teflon seals gasket seals and ring seals in the hydraulic motor assembly are not part of the winch seal kit The tt s 261 REV 010611 PAGE 19 SERVICE INSTRUCTIONS conrnuep seal kit for the hydraulic motor can be ordered from the factory under Part No 23117 All parts of the hydraulic motor with the exception of the motor adaptor item 800 and the port end cover item 870 are standard parts of the hydraulic motor having a 3 inch gear section All of these parts can be ordered from PULLMASTER or an Authorized Distributor Dealer in Canada the United States and in most overseas areas REMOVE HYDRAULIC MOTOR ASSEMBLY If disassembly of hydraulic motor is not necessary proceed as follows 1 Remove 12 hex head capscrews item 537 with lockwashers item 541 from motor adaptor item 800 Since brake springs item 752 apply pressure against inside motor a
36. emoved from the brake housing and there is no need for further disassembly unless a failure has been analysed in the remaining winch assembly DISASSEMBLY OF FREE FALL ASSEMBLY If a failure occurs in free fall section of the winch proceed as follows 1 Remove drain plug item 121 from end cover item 240 and drain lubricating oil from free fall housing and end cover The oil will drain quicker if the filler plug item 121 is removed 2 Ifa failure has occurred in metering pump the pump can be removed without disassembling the rest of the free fall assembly To remove metering pump remove six capscrews item 197 six lockwashers item 199 and remove and discard O ring item 241 If winch is a controlled free fall model tube assembly item 216 need to be removed also The metering pump is not user serviceable and must be replaced 3 Remove 16 hex head capscrews item 537 with lockwashers item 541 and separate end cover item 240 from free fall housing item 200 Remove and discard O ring item 213 from flange of spring retainer item 212 4 Inspect planet hub stopper item 126 and sungear stopper item 344 for excessive wear Replace if planet hub stopper is less than 21 inch thick and replace sungear stopper if less than 22 inch thick 5 Pull final planet assembly out of final internal gear item 330 and inspect for wear or damage Mounting capscrews item 551 can be screwed into two tapped pulling holes in planet hub
37. for belt slippage When checking oil pressure and volume in the hydraulic circuit make certain that the hydraulic reservoir is filled to the top level and the hydraulic pump is running at maximum operating rpm Only if the hydraulic system has been checked and found to be in order use the 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 pressure as listed in SPECIFICATIONS See 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 system Relief valve may be settoolow See SPECIFICATIONS for maximum operating pressure Clutch release valve may be in release position Winch will not produce line speed at maximum Winch is mounted to an uneven surface volume as listed in SPECIFICATIONS See 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 onthe brake release channel between the motor adaptor and the brake housing is damaged If this failure
38. h directions and the ability to lower a load FAST The free fall option comes in three variations emergency free fall controlled free fall or with both combined The main components of this unit are Hydraulic gear motor Multi disc brake with static and dynamic function Over running clutch Hydraulic gear motor Primary planet reduction Final planet reduction Brake housing Cable drum Free fall housing Free fall clutch assembly Metering pump assembly for controlled free fall FUNCTION IN FORWARD ROTATION HOISTING Inforward rotation the outputtorque and rpm ofthe hydraulic motor are transmittedto the sungear ofthe primary planet reduction The output of the primary reduction is transferred to the final sungear which is splined to the primary planet hub The final planet assembly is locked in place by the free fall clutch and does not rotate so the rotation is transmitted to the cable drum by the final drive planet gears In forward rotation or when load is lifted 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 maximum load is held safely by the disc brake FUNCTION IN REVERSE ROTATION LOWERING In reverse rotation or when the winch is pressurized for lowering of a load hydraulic p
39. he cable drum IMPORTANT The ropes chains slings etc are not part of the winch and are not covered by this manual 1 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 hoisting Standard rotation for hoisting is clockwise 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 CABLE ANCHOR WIRE ROPE INSTALLATION Clockwise hoisting winch shown Use cable anchor slot on opposite side of drum for counterclockwise hoisting winch CABLE ANCHOR SLOT Feed the wire rope through the cable anchor slot Loop rope back into slot as shown Insert cable anchor into slot small end first Pull rope tight to wedge rope in slot 51013 M25FF
40. hout load LIFTING 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 PAGE 26 261 REV 970701 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 the following preventive maintenance service should be done every 12 months or 500 operating 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 Clean all parts and inspect for wear and damage as per instructions Replace worn or damaged parts as required 5 Reassemble the winch as per instructions 6 FollowINSTALLATION and OPERATING INSTRUCTIONS when returning winch to its mounting When ordering parts for the PULLMASTER Model M25 planetary winch with free fall always quote the complete model and serial number of the unit MODEL NO SERIAL NO PULLMAST
41. ion plates item 715 4 Install new well greased O rings item 751 and item 753 into glands of piston item 750 Carefully install brake piston in brake housing 5 Install 14 brake springs item 752 in brake piston using hole pattern shown below HOLE PATTERN FOR BRAKE SPRING INSTALLATION Be n LT LOCATION OF pow r aS BRAKE SPRINGS DO FOURTEEN SPRINGS 7707 TWENTY HOLES fp 2 11007 M25 50 261 REV 970701 PAGE 25 SERVICE INSTRUCTIONS conrtinuep 6 Liberally grease three new O rings item 801 and install in to recesses on motor adaptor item 800 Install new well greased O ring item 707 on flange of motor 7 Slide hydraulic motor assembly on splined end of motor drive shaft item 730 and line up pressure transfer holes of brake housing and motor adaptor Tighten 12 capscrews item 537 and lockwashers item 541 one turn at a time to evenly compress springs REASSEMBLY OF HYDRAULIC MOTOR If hydraulic motor was disassembled the following procedure should be followed for reassembly 1 Clean all parts thoroughly before reassembly and apply grease liberally to all seals Use only new seals seal kit Part No 23117 for hydraulic motor 2 Install two new teflon seals item 887 on each thrust plate item 885 Press one of the thrust plates together with two teflon seals onto bearings item 875 installed in motor adaptor item 800 3 Install new well greased gasket seal item 869
42. item 330 and final sungear item 340 Using two 5 8 11NC eyebolts screwed into final planet hub item 300 to suspend planet assembly greatly assists in this operation 18 Install new well greased O ring item 213 on end of spring retainer item 212 and place end cover item 240 over top Fasten in place with 16 hex head capscrews item 537 and lockwashers item 541 Turn winch over with open end of cable drum facing up To keep winch secure and to help prevent it from falling over we recommend sitting end cover item 240 upon a piece of steel tube of approximately 12 inch ID and6 inch deep REASSEMBLY OF PRIMARY DRIVE Reassemble primary drive as follows 1 Insert free fall coupling item 210 with circlip item 343 into cable drum item 500 and engage spline with final sungear item 340 2 Press bearing item 533 into bearing flange item 530 and secure with bearing retainer item 534 Carefully press new well greased oil seal item 531 into other side of bearing flange and press assembly onto hub of brake housing item 700 3 Press new well greased oil seal item 607 into connecting shaft item 600 If a backup washer is included in your seal kit it should be installed together with and behind the oil seal 4 Install new well greased O ring item 601 onto connecting shaft item 600 and insert through bore in brake housing Slide internal gear item 430 along with spacer item 434 onto spline of connecting shaf
43. l and gear lubricant 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 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 In 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 87dBA measured on a distance of 1 00 meter 1 60 meters high The measuring equipment used was Realistic 342 3019 29 30 Wear proper clothing and personal protection equipment such as footwear safety goggles and a hard hat Read manual first 606909 Do not use the wire rope as a ground for welding Clean up any oil spillage immediately 261 REV 051117 PAGE 1 DESCRIPTION OF THE MODEL M25 WITH FREE FALL GENERAL DESCRIPTION The PULLMASTER Model M25 with free fall is a planetary hydraulic winch having equal speed in bot
44. lfunction 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 specified maximum rated line speed or drum rpm a loss of hydraulic flow somewhere in the hydraulic circuit system can be analysed If this condition exists install a flow meter into the hydraulic circuit to check the volume supplied to the pressure port of the hydraulic winch motor when the winch control is completely opened The flow meter should indicate the maximum operating volume If this test indicates a loss of hydraulic flow check the hydraulic pump the relief valve and the control valve If the pump is driven by V belts check for belt slippage The hydraulic pressure relates to the line pull or lifting capacity of the winch If the winch will not lift the specified maximum line pull install a pressure gauge into the pressure line leading to the hoisting port on the hydraulic winch motor Stall the winch to prevent rotation of the drum and then open the control valve 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 If the pump is driven by V belts check
45. n or indented Winch supplied with external brake release option is not plumbed per TYPICAL HYDRAULIC CIRCUIT Failure to vent external brake release port to reservoir may trap pressure and cause winch brake to slip Brake vibrates when powering down a load Pump does not supply sufficient flow Pump rpm must be maintained at normal operating speed when a load is lowered Brake is running too hot This is caused by insufficient circulation flow To checkthe circulation observe the flow of oil from the circulation return line of the winch approx 5 US gpm 19 l min when the winch is reversed Control valve for the winch operation 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 Free fall clutch cannot be disengaged Insufficient pressure or flow supplied to free fall release port refer to TYPICAL HYDRAULIC CIRCUIT O ring seals in clutch piston are damaged Insufficient load on the wire rope A minimum of 500 Ib 227 kg on a standard 1 drum is required to drop a load in free fall Refer to the SERVICE INSTRUCTIONS if it becomes necessary to disassemble the Model M25 winch with free fall 261 REV 950501 PAGE 17 TROUBLESHOOTING continuep FAILURE PROBABLE CAUSE Free fall cannot be controlled a Emergency free fall is non controllable b Piping circuit or co
46. nch The load minimum 500 Ib 227 kg will drop The speed of the free fall will depend on the size of the load on the wire rope RE ENGAGING FREE FALL CLUTCH WHILE LOAD IS DROPPING CAUSES SHOCK LOADS AND WILL LEAD TO CABLE FAILURE PROPERTY DAMAGE SEVER INJURY OR DEATH INTERLOCK HYDRAULIC CONTROL TO PREVENT RE ENGAGING FREE FALL CLUTCH WHILE LOAD IS DROPPING CONTROLLED FREE FALL To operate the controlled free fall open the free fall control lever gradually to obtain smooth acceleration of the lowering speed of the winch The lowering speed is in direct proportion with the movement of the free fall control lever To decelerate or slow down the load slowly return the control lever back to it s neutral position Sudden stops of an accelerating load and erratic operation of the free fall control lever should be avoided For better modulation of the free fall control a long handle should be used on the free fall control valve IMPORTANT _ Thecontrolled free fall is not designed nor intended to lower the maximum load in a controlled freefall The permissible load of the PULLMASTER Model M25 controlled free fall operation is 30 of the maximum line pull capacity of the winch If after a new installation the winch does not function properly refer to the TROUBLESHOOTING section of this manual 261 REV 010611 PAGE 15 TROUBLE SHOOTING GENERAL In most cases when the hydraulic winch does not perform satisfactorily the cause of ma
47. ntrol valve is incorrect Check hydraulic circuit c Control valve used has poor metering characteristics The control valve should have a flow capacity of 3 6 maximum If a large volume control valve is used it may not provide good metering of the hydraulic oil resulting in poor speed control Hydraulic metering pump installed in the end housing is damaged Oil leaks from the motor flange are caused by a damaged O ring seal on the motor flange Oil leaks occurring between the cable drum flange and brake housing are caused by excessive pressure in the brake housing or free fall housing Excessive pressure in the brake housing will damage oil seal item 607 which separates the brake housing from the drum interior Excessive pressure in the free fall housing will damage oil seal item 505 which separates the free fall housing from the drum interior In this condition hydraulic fluid will leak into the drum interior then damage oil seal item 531 Oil leaks occurring between the cable drum flange and free fall housing are caused by excessive pressure in the free fall housing Excessive pressure in the free fall housing will damage oil seal item 105 Maximum allowable back pressure in the free fall housing is 10 psi 0 7 bar Check for restrictions in circulation return line must go directly to reservoir Oil leaking out of the free fall housing on either side of the spring retainer is caused by a damaged O ring seal item 2
48. nty and 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 FAILURE TO COMPLY WITH THE FOLLOWING SAFETY RECOMMENDATIONS AND LOCAL RULES AND REGULATIONS WILL RESULT IN PROPERTY DAMAGE SEVERE INJURY OR DEATH Definition Caution indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury Definition Warning indicates a potentially hazardous situation which if not avoided could result in death or serious injury Definition Danger indicates a potentially 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
49. 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 PAGE 16 261 REV 950501 TROUBLESHOOTING FAILURE PROBABLE CAUSE Brake will not hold Brake 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 brake 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 Hydraulic pressure is trapped in the clutch piston preventing total engagement This is caused by using an incorrect control valve The free fall control valve must leave the free fall release port open to reservoir when not activated Wire rope is fastened to the incorrect cable anchor slot Sprag clutch is damaged or surfaces where sprag clutch engages on motor drive shaft or brake hub are wor
50. ode is 500 Ib 227 kg CONTROLLED FREE FALL The controlled free fall offers positive down control of a load at selected speeds and can be stopped anywhere on the way down The controlled free fall is not designed nor intended to lower the maximum load in a controlled free fall The permissible load is 30 of the maximum line pull capacity of the winch Since the clutch release pressure of the controlled free fall varies in accordance with the size of the load a metering pump is utilized to compensate for clutch release pressure variations FUNCTION OF CONTROLLED FREE FALL The controlled free fall has the same basic function as the emergency free fall with the addition of a metering pump which regulates the different clutch pressure requirements during a controlled free fall When the controlled free fall is actuated hydraulic pressure is channelled into the clutch piston causing the clutch piston to press against a series of springs and release the multi disc clutch When the clutch has been released the final planet assembly rotates with the cable drum around a stationary sungear A small hydraulic gear pump is splined to the final planet hub This hydraulic pump displaces hydraulic oil flow out of the free fall control circuit to compensate for the difference in the clutch release pressure which varies according to the actual lowering speed The faster the load is lowered with the free fall control the faster the planet hub will cause the p
51. otation external circulation flow 8 Automatic brake external brake release clockwise drum rotation external circulation flow 9 Automatic brake external brake release counterclockwise drum rotation external circulation flow 10 Automatic brake counterclockwise drum rotation external circulation flow HYDRAULIC MOTOR 86 Hydraulic motor 3 inch gear section 12 3 cubic inch displacement Other gear sections for this motor are optional DRUM SIZE 1 10 inch drum diameter X 17 inch flange diameter X 11 inch length STANDARD For other drum sizes refer to APPENDIX A OPTIONS C Controlled free fall D Emergency free fall G Combined emergency and controlled free fall 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 PAGE 4 261 REV 980701 OPTIONS COUNTERCLOCKWISE ROTATION The drum rotation of the standard PULLMASTER Model M25 planetary winch with free fall is clockwise for hoisting when looking at the hydraulic motor of the winch Drum rotation for counterclockwise hoisting direction is available as an option INTERNAL CIRCULATION The PULLMASTER Model M25 7 86 X has an external circulation flow supply line to cool the brake Internal circulation is available as an option EXTERNAL BRAKE RELE
52. re damage 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 a 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 cl
53. ressure from the reverse side of the hydraulic motor is channelled to the brake piston causing the brake piston to release the multi disc brake against a number of brake springs The over running clutch connecting the motor drive shaft to the brake assembly locks causing the brake discs to rotate between divider plates which are engaged into the brake housing If the load on the cable drum tends to effect the lowering speed the resulting pressure drop in the brake piston causes friction between the brake discs and the divider plates In this way a completely smooth pay out speed can be achieved in a stepless operation by modulation of the winch control handle When the control handle is returned to neutral position rotation stops and the disc brake applies automatically A hydraulic counter balance valve or holding valve is not required for smooth and positive operation of the automatic brake During lowering operations of the winch the friction created by the brake discs results in heat This heat is dissipated by the circulation of hydraulic fluid through the brake housing supplied internally from the motor or externally depending on the brake code of the winch For efficient cooling of the automatic brake models with external circulation should be adjusted to supply 5 US gpm 19 I min This flow must be returned directly to the reservoir with a permissible back pressure of 30 psi 2 bar IMPORTANT Under no circumstances must the pressur
54. roceed as follows 1 For ease of working on the rest of the unit set winch upright on free fall housing Remove pipe nipple item 181 along with pipe coupling item 179 from hole in base item 550 Remove two winch base halves item 550 and 552 by removing the 28 hex capscrews item 551 and lockwashers item 553 which attach winch base to winch assembly 2 Remove access plug item 734 using a 1 2 13 NC bolt motor adaptor bolt item 537 works nicely from inside brake housing item 700 and discard O ring item 735 Remove six hex head capscrews item 537 along with lockwashers item 541 from bearing flange item 530 by rotating brake housing until access hole is over top of them Brake housing together with bearing flange and primary planet hub assembly can now be lifted out of cable drum item 500 Discard O ring item 539 3 Remove free fall coupling item 210 from inside cable drum 4 Remove retaining ring item 401 from inside of internal gear item 430 Primary planet hub assembly may now be slid out of internal gear and inspected for wear or damage If primary planet gears item 420 have to be removed take off circlip item 411 from planet pin item 410 and press planet pin out of primary planet hub item 400 Remove primary planet gear item 420 together with loose rollers item 423 and thrust washers item 421 5 Remove primary sungear item 440 from center of connecting shaft item 600 6 Take circlip item
55. stallation In the following service instructions reference to parts is made by numbers and shown on the applicable group drawings DISASSEMBLY For the majority of required service or repair work disassembly is required only on the brake housing of the PULLMASTER Model M25 planetary winch with free fall There are no special tools needed for the service or repair work and no adjustments or calibrations are necessary Proceed with the disassembly as follows DISASSEMBLY OF HYDRAULIC MOTOR ASSEMBLY If the analysed service or repair work requires access to the interior of the brake housing the hydraulic motor should not be disassembled In this case the hydraulic motor should be removed together with the motor adaptor as a complete assembly If a problem has been analysed to be in the hydraulic motor proceed with the disassembly as follows 1 Remove eight hex capscrews item 951 together with lockwashers item 953 from motor assembly IMPORTANT Failure to exercise care when removing the motor port end cover or gear housing could permanently damage the machined surfaces of these motor components Take care not to damage machined surfaces of motor components at disassembly 2 Remove pry loose if necessary port end cover item 870 together with bearings item 875 and ring seal item 877 Thrust plate item 885 and dowel pins item 865 may stay in gear housing 3 If thrust plate comes off with end cover carefully pry it off of b
56. t and fasten with circlip item 431 5 Reassemble primary planet hub assembly Use grease to temporarily hold 20 loose rollers item 423 in bore of planet gear item 420 Verify placement of sungear stopper item 444 Position thrust washers item 421 on either side of planet gear and press planet pin item 410 into final planet hub item 400 Retain with circlip item 411 6 Insert primary sungear item 440 between three planet gears and insert sungear shaft into connecting shaft engaging planet gears with internal gear Fasten with retaining ring item 401 7 Insertsungear item 440 into center of three planet gears item 420 Place planet assembly into internal gear item 430 Insert retaining ring item 401 into internal gear item 430 mn mHr PAGE 24 261 REV 970701 SERVICE INSTRUCTIONS conrtinuep 8 Place new well greased O ring item 539 onto bearing flange item 530 Brake housing with primary reduction attached may now be lowered into cable drum item 500 9 Rotate brake housing to line up access holes and fasten bearing flange using six capscrews item 537 and lockwashers item 541 10 Install new well greased O ring item 735 into access plug item 734 Install access plug into access hole inside brake housing 11 Attach
57. to assist with removal of final planet hub assembly 6 Inspectthree final planet gears item 320 for damage or wear If itis necessary to remove final planet gears remove circlip item 311 and press planet pin item 310 out of planet hub item 300 Inspect loose rollers item 323 and two thrust washers item 321 and replace if damaged 7 Pull final sungear item 340 out of free fall assembly 8 Remove circlip item 331 from clutch connecting shaft item 220 and pull off final internal gear item 330 9 Remove 16 socket head capscrews item 207 along with lockwashers item 217 from spring retainer item 212 CAUTION Since 88 springs apply pressure behind spring retainer socket head capscrews should be loosened one turn at a time until spring pressure has been relieved 10 Pull spring retainer item 212 out of free fall housing item 200 Remove and discard O ring item 213 from spring retainer 11 Remove 88 springs item 232 from clutch piston item 230 12 Pull clutch piston item 230 out of free fall housing item 200 Use two long 5 8 11NC capscrews screwed into piston to assist removal Alternatively compressed air may be carefully applied to free fall release port to assist removal of clutch piston 261 REV 021029 PAGE 21 SERVICE INSTRUCTIONS 13 Remove and discard O rings items 231 from clutch piston and 233 from free fall housing 14 Check clutch piston outside diameters and insid
58. two base halves items 550 and 552 using 28 capscrews item 551 and lockwashers item 553 12 Insert pipe nipple item 181 with pipe coupling item 179 attached through hole in base and screw tightly into free fall housing REASSEMBLY OF BRAKE HOUSING ASSEMBLY Reassemble brake housing assembly as follows 1 Install sprag clutch item 723 into bore of brake hub item 720 Position sprag clutch aligners item 722 and item 724 on either side of brake hub Carefully slide motor drive shaft item 730 into brake hub assembly and secure with circlip item 719 Verify that circlips item 727 and item 731 are installed on motor drive shaft IMPORTANT For proper brake function verify that the sprag clutch is installed correctly When viewed from the motor end the motor drive shaft of a clockwise hoisting winch must turn freely clockwise and lock in the counter clockwise direction 2 Install motor drive shaft assembly into brake housing and carefully twist shoulder of shaft through oil seal item 607 Twist slightly more to engage spline with primary sungear item 440 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 3 Install brake spacer item 712 into brake housing item 700 Starting and finishing with a divider plate alternately install seven divider plates item 714 and six frict
59. ump to turn increasing the displacement volume drawn out of the control circuit When the free fall control is returned to neutral the hydraulic pressure in the clutch piston is vented and the free fall clutch is re engaged by spring pressure COMBINED EMERGENCY AND CONTROLLED FREE FALL The emergency and controlled free fall can be combined for installations where both of these options are required Two separate controls must be used for this option and the operating criteria for both functions must be adhered to IMPORTANT Under no circumstances must the pressure in the free fall housing be permitted to exceed 10 psi 7 bar Excessive pressure in the free fall housing will damage the oil seal separating the free fall housing from the drum interior Damage to this seal will cause the drum to fill up with hydraulic fluid 261 REV 980701 PAGE 3 EXPLANATION OF MODEL CODING M Equal speed in both directions SIZE OF UNIT REDUCTION RATIO Only used for non standard reduction ratios TYPE OF BRAKE 3 Automatic brake clockwise drum rotation internal circulation flow M25 X BASIC UNIT SERIES T 4 Automatic brake external brake release clockwise drum rotation internal circulation flow 5 Automatic brake external brake release counterclockwise drum rotation internal circulation flow 6 Automatic brake counterclockwise drum rotation internal circulation flow 7 Automatic brake clockwise drum r
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