INSTRUCTION AND PARTS MANUAL
MODEL PL8
PLANETARY HYDRAULIC WINCH
THE LOGICAL CHOICE
PULLMASTER WINCH CORPORATION
8247-130th Street, Surrey, B.C. V3W 7X4, Canada
Telephone: 604-594-4444 Fax: 604-591-7332
Website: www.pullmaster.com
E-mail: sales@pullmaster.com
PMC 271
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.
070228
US.DIST.01.01.07 [PULLMASTER LOGO]
Pullmaster Limited Warranty
Effective 8/1/2008
SUPERSEDES ALL PRIOR WARRANTIES
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 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.
If 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 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 tensional 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 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 a 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 claims 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 Warranty 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.
Note: Prices and specifications contained in this price book are subject to change without notice.
SAFETY RECOMMENDATIONS
Definition: Caution indicates a potentially
DANGER
FAILURE TO COMPLY WITH THE FOLLOWING SAFETY
RECOMMENDATIONS AND LOCAL RULES AND
REGULATIONS WILL RESULT IN PROPERTY
DAMAGE, SEVERE INJURY OR DEATH.
The planetary hydraulic winches and drives 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 manual under “SPECIFICATIONS”. Other use as foreseen
in the functional description of the hydraulic winch is not allowed without written permission from PULLMASTER.
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.
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.
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. Do 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. 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 89 dBA measured
on a distance of 1.00 meter, 1.60 meters high. The
measuring equipment used 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.
271 REV.051117
PAGE 1
DESCRIPTION OF THE MODEL PL8
GENERAL DESCRIPTION:
The PULLMASTER Model PL8 is a planetary, hydraulic winch having equal speed in both directions. The main
components of this unit are:
✛ Hydraulic gear motor
✛ Multi-disc brake with static and dynamic function
✛ Over-running clutch
✛ Primary planet reduction
✛ Final planet reduction
✛ Brake housing
✛ Final drive housing
✛ Cable drum
FUNCTION IN FORWARD ROTATION (HOISTING):
In forward rotation, the output torque and rpm of the hydraulic motor are transmitted to the sungear of the primary
planet reduction. The output of the primary reduction stage is transmitted to the final reduction stage by the final
sungear shaft, which is splined to the primary planet hub. In forward rotation, or 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 sun gear
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, hydraulic pressure from the reversing 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 paying 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 counterbalance valve or holding valve is not required for smooth and positive operation
of the automatic brake.
During the lowering operation of the winch, the friction created by the brake discs results in temperature. This
temperature is dissipated by an internal circulation flow, supplied out of the hydraulic motor or from an external
source. For models with external circulation, supply winch with approximately 2.5 (US) gpm - 9.5 l/min circulation
flow. This circulation flow must be returned directly to the reservoir with a permissible back pressure of 30 psi (2
bar).
IMPORTANT: Under no circumstances must the back pressure 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.
PAGE 2
271 REV.970407
EXPLANATION OF MODEL CODING
PL 8 - XX - XX - XX - X - XXXX
BASIC UNIT SERIES
SIZE OF UNIT
TYPE OF BRAKE
- 3 Automatic brake, counterclockwise drum rotation,
internal circulation flow
- 4 Automatic brake, external brake release, counterclockwise
drum rotation, internal circulation flow
- 5 Automatic brake, external brake release, clockwise drum
rotation, internal circulation flow
- 6 Automatic brake, clockwise drum rotation,
internal circulation flow
- 7 Automatic brake, counterclockwise drum rotation,
external circulation flow
- 8 Automatic brake, external brake release, counterclockwise
drum rotation, external circulation flow
-9 Automatic brake, external brake release, clockwise drum
rotation, external circulation flow
-1 0 Automatic brake, clockwise drum rotation,
external circulation flow
HYDRAULIC MOTOR
- 30
DRUM SIZE
DESIGN REVISION
SPECIFICATION NUMBER
NOTE: Clockwise and counterclockwise drum rotation is the direction of rotation for pulling or hoisting,
COMMERCIAL WM31
(Other gear sections for this motor are optional)
- 1 9.6 inch drum diameter x 14.1 inch flange diameter x 8 inch length
(For other drum sizes refer to APPENDIX A)
Describes features not identified by preceding codes
established by looking at the hydraulic motor.
hydraulic motor, 2 inch gear section
- STANDARD
271 REV.950401
PAGE 3
OPTIONS
CLOCKWISE ROTATION:
The drum rotation of the standard PULLMASTER Model PL8 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 RELEASE:
PULLMASTER planetary winches can be supplied with an external brake release which permits release of the
automatic disc brake from an external pressure source.
DANGER
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 PL8 planetary winch can
be supplied with optional drums to accommodate large wire rope storage capacity.
DRUM GROOVING:
Cable drums for the PULLMASTER Model PL8 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 GEAR SECTION FOR THE HYDRAULIC MOTOR:
The performance of the standard PULLMASTER Model PL8 planetary winch is based on a COMMERCIAL WM31
hydralic motor, having a 2 inch gear section. The performance of the winch can be changed by using different gear
sections. (Contact the factory for performance information of different gear sections).
HYDRAULIC MOTORS FOR HIGH PRESSURE HYDRAULIC SYSTEMS:
The operating pressure of the PULLMASTER Model PL8 planetary winch is limited to 2150 psi (148 bar). For
hydraulic systems operating with higher hydraulic pressure, the winch can be supplied with a hydraulic piston motor,
which will provide for the same basic performance 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.
PAGE 4
271 REV.970407
SPECIFICATIONS
Performance specifications are based on standard hydraulic motor, gear ratio and cable drum 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.
CABLE DRUM DIMENSIONS (STANDARD DRUM):
Barrel diameter 9.63 in 244 mm
Flange diameter 14.13 in 359 mm
Barrel length 8.00 in 203 mm
CABLE STORAGE CAPACITY:
(Size of wire rope) 3/16 in 1234 ft 376 m
1/4 in 684 ft 209 m
5/16 in 462 ft 141 m
3/8 in 294 ft 90 m
7/16 in 215 ft 66 m
1/2 in 196 ft 60 m
9/16 in 140 ft 43 m
MAXIMUM OPERATING PRESSURE: 2150 psi 148 bar
MAXIMUM OPERATING VOLUME: 37 (US) gpm 140 l/min
MINIMUM OPERATING VOLUME: 11 (US) gpm 42 l/min
DRUM TORQUE AT MAXIMUM PRESSURE: 35438 lb-in 4004 Nm
DRUM RPM AT MAXIMUM VOLUME: 46 rpm
LINE PULL AT MAXIMUM PRESSURE:
Bare drum 7000 lb 31.1 kN
Full drum 5202 lb 23.1 kN
LINE SPEED AT MAXIMUM VOLUME:
Bare drum 122 fpm 37 m/min
Full drum 164 fpm 50 m/min
PERMISSIBLE SYSTEM BACK PRESSURE AT
MOTOR RETURN PORT:
65 psi 4.5 bar
PERMISSIBLE PRESSURE
AT CIRCULATION RETURN PORT:
30 psi 2 bar
LUBRICATING OIL: Refer to RECOMMENDATIONS for viscosity and instructions.
Refer to APPENDIX A for oil volume required.
271 REV.011203
PAGE 5
PERFORMANCE GRAPHS
LINE PULL VS. OIL PRESSURE
0 5.3 10.7 16.0 21.4 26.7 32.0
2150
PG-PL8
LINE PULL - kN
148
1720
1290
860
OIL PRESSURE - psi
430
0
LINE SPEED VS. OIL VOLUME
0 8 16 25 33 41 49
40
FULL DRUMFULL DRUM
BARE DRUMBARE DRUM
LINE PULL - lb
LINE SPEED - m/min
119
89
60
30
0
7200600048003600240012000
151
OIL PRESSURE - bar
32
24
16
OIL VOLUME - (US)gpm
8
0
270 54 81 108 135 162
Performance graphs are based on standard hydraulic motor, gear ratio and cable drum with 1/2 inch diameter
wire rope.
PAGE 6
BARE DRUMBARE DRUM
LINE SPEED - fpm
FULL DRUMFULL DRUM
121
91
60
OIL VOLUME - l/min
30
0
271 REV.950401
CIRCULATION
RETURN LINE
(MUST GO
DIRECT TO
RESERVOIR)
TYPICAL HYDRAULIC CIRCUIT
HC-PL8
800 PSI [55 BAR]
1/2(US)GPM [2 L/MIN]
REQUIRED FOR MODELS
SUPPLIED WITH EXTERNAL
BRAKE RELEASE OPTION
CIRCULATION SUPPLY
LINE 2.5 (US) gpm
[9.5 l/min]
EXTERNAL CIRCULATION
MODELS ONLY
HYDRAULIC
CONTROL VALVE
(MOTOR SPOOL)
4-WAY SPRING
RETURN TO CENTER
PRESSURE
RELIEF VALVE
FILTER
PUMP
271 REV.950401
RESERVOIR
PAGE 7
RECOMMEND ATIONS
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 UP TO
THE LEVEL OF THE OIL FILL PORT
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. Consult lubricating oil supplier or
factory for temperatures beyond normal operating range.
HYDRAULIC PUMP:
For maximum performance of the PULLMASTER
planetary winch, the hydraulic pump must supply the
maximum flow of hydraulic fluid at the hydraulic pressure
stated in SPECIFICATIONS.
HYDRAULIC CONTROL VALVE:
The standard control valve used for operating 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, a pressure
relief is part of the hydraulic control valve. Where this
is not the case, a separate pressure relief valve must
be installed and set at the recommended maximum
pressure.
HYDRAULIC RESERVOIR:
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 all 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 PL8
planetary winch:
Pressure lines:
Circulation return line:
It is recommended that a larger size of hydraulic hose is
installed where the pressure lines are excessively long.
Equivalent to SAE 100R12-16
Equivalent to SAE 100R4-12
HYDRAULIC FILTER:
Consult hydraulic component manufacturer for
recommendation. Generally, 5 to 10 micron filters are
acceptable. In order to prevent accidental stoppage of
the return line flow, the filter should have a by-pass
feature.
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 in the
operator’s control panel. The E stop must be designed
and placed in line with EN 60204 and EN 418.
PAGE 8
271 REV.011125
INSTALLATION INSTRUCTIONS
DANGER
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 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:
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) 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) Only after this procedure, should the fourth mounting bolt be installed. Tighten all four bolts as 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 remains full
of oil at all times. Connect the return line directly to reservoir. Do not connect to a common return line.
7) 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.
8 ) If, after new installation, the winch does not function properly, refer to the TROUBLESHOOTING section of
this manual.
271 REV.970407
PAGE 9
OPERATING INSTRUCTIONS
DANGER
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 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.
1) 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 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.
WIRE ROPE INSTALLATION
Counterclockwise hoisting winch shown.
(Use cable anchor slot on opposite side
of drum for clockwise hoisting 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.
2) 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.
3) 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.
4) 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.
5) Prevent corrosion damage to winch interior. If not used regularly, run winch up and down at least once every
two weeks.
CABLE ANCHOR SLOT
CABLE ANCHOR
SI1013-PL8
6) 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
271 REV.051117
TROUBLE SHOOTING
GENERAL:
In most cases, when the hydraulic winch does not perform satisfactorily, the cause for 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 specified maximum rated line speed or drum rpm, a loss of hydraulic
flow somewhere in the hydraulic circuit can be analysed. If this condition exists, install a flow meter into the
hydraulic circuit to check the volume of oil 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 pulling capacity of the winch.
If the winch will not produce the specified maximum line pull, install a pressure gauge in 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 hydraulic pump is driven by V-belts, check for belt slippage. When checking oil pressure
and volume in the hydraulic circuit, make sure that the hydraulic reservoir is filled to the top level and the
hydraulic pump is running at maximum operating rpm.
Only after the hydraulic system has been checked and found to be in order, use the following indications for
probable causes of failure in the winch:
Winch will not produce line pull at maximum
pressure as listed in SPECIFICATIONS.
Winch will not produce line speed at maximum
volume as listed in SPECIFICATIONS.
Winch will not reverse.
PROBABLE CAUSEFAILURE
a) Winch is mounted to an uneven surface.
(See INSTALLATION INSTRUCTIONS.)
b) Cable sheaves or block purchase operated with the
winch are not turning freely.
c) Damage or wear in the hydraulic motor.
d) The relief valve pressure may be set too low.
e) Excessive back pressure in the hydraulic circuit might
cause the automatic brake to release momentarily.
a) Winch is mounted to an uneven surface.
(See INSTALLATION INSTRUCTIONS.)
b) Cable sheaves or block purchase operated with the
winch are not turning freely.
c) Damage or wear in the hydraulic motor.
d) Excessive back pressure in the hydraulic circuit.
a) Leakage out of the brake piston prevents the disc brake
from being released against the brake springs. This is
caused by damaged O-ring seals on the brake piston.
b) Insufficient hydraulic pressure. (See SPECIFICATIONS
for minimum operating pressure.)
c) Winch is mounted to an uneven surface.
(See INSTALLATION INSTRUCTIONS.)
d) Hydraulic pressure is not reaching the brake piston due
to plugged passages.
271 REV.960215
PAGE 11
TROUBLE SHOOTING CONTINUED
FAILURE
Brake will not hold.
Brake vibrates when lowering a load.
PROBABLE CAUSE
a) Brake plates or divider plates have been damaged by
contamination in the hydraulic fluid or lack of circulation
flow in the brake housing.
b) Brake piston is seized in the brake housing because of
contamination in the hydraulic fluid.
c) Excessive back pressure in the return line of the
hydraulic circuit causes the brake to release.
d) 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.
e) Wire rope is fastened to the incorrect cable anchor slot.
f) Sprag clutch is damaged or surface where sprag clutch
engages on motor drive shaft or brake hub are worn or
indented.
g) 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.
a) Pump is too slow. Pump rpm must be maintained at
normal operating speed when a load is lowered.
b) Brake is running too hot. This is caused by a complete
lack of, or insufficient circulation flow. To check the
circulation, observe the flow of oil from the circulation
return line of the winch (approx. 2-3 (US) gpm (8-11 l/
min) when the winch is reversed.
c) Control valve for the winch operation has poor metering
characteristics.
d) Damaged brake plates or divider plates.
e) The over-running clutch, which connects the motor
shaft with the brake assembly, is damaged.
f) Air has mixed with hydraulic oil resulting in foamy oil.
Oil leaks.
Refer to the SERVICE INSTRUCTIONS if it becomes necessary to disassemble the Model PL8 winch.
PAGE 12
a) Oil leaks from the motor flange are caused by a
damaged O-ring seal on the motor flange.
b) Oil leaks occurring between the cable drum flanges
and housing are caused by excessive pressure in the
brake housing. Excessive pressure in the brake housing
will damage the oil seal between the brake housing and
cable drum interior.
271 REV.950401
SER VICE INSTRUCTIONS
GENERAL:
Before attempting disassembly of the PULLMASTER Model PL8 planetary winch, 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. 23101) and, providing the hydraulic motor has to be serviced, a seal kit (Part
No. 23131) on hand before the unit is taken apart. Two new needle bearings, item 875, may also be required (Part
No. 25322).
NOTE: Back up 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 installation.
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 PL8 planetary winch. 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 the four hex capscrews, item 951, together with the lockwashers, item 953, from the 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 the gear housing.
3 ) If thrust plate comes off with the end cover, carefully pry it off of the bearings, 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 the gear housing, item 861, off of the motor adaptor, item 800. Thrust plate, item 885, and dowel
pins, item 865, may stay in the gear housing.
6) If thrust plate stays on the motor adaptor, carefully pry it off of the bearings, item 875, and discard pocket seals,
item 887.
7 ) Discard body seals, item 869. It is also advisable to replace ring seals, item 877, at this time. Bearings, item
875, have to be removed to allow access to the ring seals.
271 REV.970407
PAGE 13
SERVICE INSTRUCTIONS CONTINUED
Pocket seals, body seals, and ring seals in the hydraulic motor assembly are not part of the winch seal kit. The
seal kit for the hydraulic motor can be ordered from the factory under Part No. 23131. All parts of the hydraulic
motor, with the exception of the motor adaptor, item 800, are standard parts of the
motor, having a 2 inch gear section. All of these parts can be ordered from PULLMASTER or COMMERCIAL
INTERTECH dealers in Canada, the United States and in most overseas areas.
REMOVAL OF HYDRAULIC MOTOR ASSEMBLY
If disassembly of the hydraulic motor is not necessary, proceed as follows:
1) Remove the 12 hex head capscrews, item 821, with lockwashers, item 823, from the motor adaptor, item 800.
Since brake springs, item 752, apply pressure against inside of the motor adaptor, it is recommended that hex
capscrews are unscrewed, one turn at a time, until the spring pressure has been released. Complete motor
assembly, including motor adaptor, can now be removed from brake housing assembly.
2 ) Remove and discard O-ring, item 801, and O-ring, item 707. (O-ring, item 801, seals pressure transfer hole for
automatic brake release and is situated on flange of brake housing.)ffffff
DISASSEMBLY OF BRAKE HOUSING ASSEMBLY
1) Aftermotor assembly has been removed, all parts of brake assembly are accessible. Remove 10 brake springs,
item 752. Thoroughly examine springs for damage and measure overall length. Overall spring length should
be 1.99 inches. If any spring measures less than 1.93 inches, replace all springs as a set.
2) Pull motor drive shaft, item 730, and complete brake hub assembly from brake housing.
COMMERCIAL WM31
hydraulic
3) Disassemble brake hub assembly by removing circlip, item 727, from motor drive shaft. Remove motor drive
shaft from brake hub, item 720. Remove sprag clutch aligners, items 722 and 724, support washers, item 717,
sprag clutch, item 723, and sprag clutch spacer, item 726, from brake hub.
DANGER
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 REPLACE MOTOR DRIVESHAFT,
SPRAG CLUTCH AND BRAKE HUB AS A SET.
4 ) Thoroughly inspect motor drive shaft, item 730, and brake hub, item 720, particularly 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 the brake piston, item 750, out of brake housing using two 7/16-14NC bolts screwed into two puller holes
in piston and discard O-rings, item 751 and item 753.
6) Thoroughly examine inner bores of the brake housing and outer diameters of the brake piston for scoring caused
by hydraulic fluid contamination. Minor surface damage may be repaired by polishing with a fine emery cloth.
PAGE 14
271 REV.970407
SERVICE INSTRUCTIONS CONTINUED
DANGER
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
REPLACE FRICTION AND DIVIDER PLATES AS A SET.
7) Remove four friction plates, item 715, together with five divider plates, item 714, 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 ) Remove oil seal, item 711, and backup washer, item 710, and discard.
All parts have now been removed from brake housing and there is no need for further disassembly unless a failure
has been analyzed in the remaining winch assembly.
DISASSEMBLY OF PRIMARY DRIVE
If primary drive requires service or repair, disassemble as follows:
1 ) Remove pipe plug, item 503, from cable drum, item 500, to drain lubricating oil from winch interior.
2 ) Remove eight capscrews, item 971, and lockwashers, item 973. Remove two tie bars, item 970. Stand winch
upright on its end housing.
3 ) Remove six capscrews, item 537, and lockwashers, item 541, through access opening in brake housing. Lift
brake housing with bearing flange assembly out of cable drum, item 500. Remove and discard O-ring, item 539.
4 ) Pull bearing flange, item 530, and ball bearing, item 533, off of brake housing, item 700.
5 ) Remove circlip, item 535. Push ball bearing, item 533, out of bearing flange. Inspect and replace if damged.
6 ) Remove and discard oil seal, item 531.
7 ) Inspect planet hub stopper, item 704, for damge or wear and replace if less than 0.13 inch thick.
8 ) Remove primary sungear, item 440.
9 ) Remove primary planet hub assembly from cable drum.
10 ) Inspect planet hub stopper, item 402, for damage or wear and replace if less than 0.13 inch thick.
11 ) Inspect three primary planet gears, item 420, for damage or wear. If it is necessary to remove planet gears,
remove circlip, item 411, and press planet pin, item 410, out of planet hub, item 400. Inspect needle bearing,
item 423, and two thrust washers, item 421, and replace if damaged or worn.
12) Remove final sungear, item 340, with circlip, item 341, and sungear stopper, item 344. Inspect stopper for
damage or wear. If stopper protrudes less than .03 inch from sungear, stopper should be replaced.
271 REV.970407
PAGE 15
SERVICE INSTRUCTIONS CONTINUED
DISASSEMBLY OF FINAL DRIVE
If final drive requires service or repair, disassemble as follows:
1 ) Remove final planet hub assembly from the cable drum.
2) Inspect three final 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 the final planet hub, item 300. Inspect seventeen loose
rollers, item 323, and two thrust washers, item 321, and replace if damaged.
Winches with optional -2 drum only:
2A) Remove coupling, item 520, from end housing spline. Proceed to step 3.
3 ) Pull the end housing, item 100, out of the cable drum ball bearing, item 507.
4 ) Remove circlip, item 513. Push ball bearing, item 507, out of the cable drum. Inspect and replace if damaged.
5 ) Remove and discard oil seal, item 505.
6 ) Inspect cable drum gear teeth for damage or wear.
REASSEMBL Y:
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.
REASSEMBLY OF FINAL DRIVE
Reassemble final drive by reversing the disassembly procedure:
1 ) Press a new, well-greased oil seal, item 505, into cable drum, item 500.
2 ) Press ball bearing, item 507, into cable drum and secure with circlip, item 513.
3 ) Press end housing, item 100, into the cable drum ball bearing, item 507.
Winches with optional -2 drum only:
3A) Replace coupling, item 520, onto end housing spline. Proceed to step 4.
4 ) Reassemble final planet hub assembly. Use grease to temporarily hold 17 loose rollers, item 323, in the bore
of the planet gear, item 320. Position thrust washers, item 321, on either side of the planet gear and press planet
pin, item 310, into the final planet hub, item 300. Retain with circlip, item 311.
5 ) Insert final planet hub assembly into the cable drum. Ensure that the planet hub spline is fully engaged.
REASSEMBLY OF PRIMARY DRIVE
Reassemble primary drive by reversing the disassembly procedure:
1 ) Press a new, well-greased oil seal, item 531, into the bearing flange, item 530. Press ball bearing, item 533,
into bearing flange and install circlip, item 535. Press bearing flange assembly onto brake housing hub.
2 ) Verify planet hub stopper, item 704, is installed on brake housing hub.
3 ) Verify sungear stopper, item 344, and circlip, item 341, are installd on final sungear, item 340.
4 ) Install final sungear into primary planet hub, item 400.
5) Reassemble primary planet hub assembly. Press needle bearing, item 423, into planet gear, item 420. Position
thrust washers, item 421, on either side of planet gear and press planet pin, item 410, into the primary planet
hub, item 400. Retain with circlip, item 411.
PAGE 16
271 REV.950401
SERVICE INSTRUCTIONS CONTINUED
6 ) Verify planet hub stopper, item 402, is installed on planet hub.
7 ) Insert primary planet hub assembly into cable drum. Ensure that the final sungear, item 340, is fully engaged
with final planet gears, item 320.
8 ) Install primary sungear, item 440.
9) Install new, well-greased O-ring, item 539, onto bearing flange, item 530. Lower brake housing, item 700,
complete with bearing flange assembly, into cable drum. To fasten bearing flange to cable drum, align holes
in the bearing flange with threaded holes in the cable drum. Install six capscrews, item 537, and lockwashers,
item 541, through access opening in brake housing.
10 ) Use eight capscrews, item 971, and lockwashers, item 973, to secure tie bars, item 970.
11 ) Install pipe plug, item 503, into cable drum.
REASSEMBLY OF BRAKE HOUSING ASSEMBLY
Reassemble brake housing assembly by reversing the disassembly procedure:
1 ) Press needle bearing, item 733, into brake housing bore.
2 ) Press new, well-greased oil seal, item 711, and back-up washer, item 710, into brake housing bore.
3) Install sprag clutch, item 723, and sprag clutch spacer, item 726, into bore of brake hub, item 720. Position sprag
clutch aligners, item 722 and 724, and support washer, item 717, on either side of brake hub. Carefully slide
motor drive shaft, item 730, into brake hub assembly and secure with circlip, item 727.
IMPORTANT: For proper brake function, verify that the brake hub rotation is correct. When
viewed from the motor end, the motor drive shaft of a counterclockwise hoisting winch
must turn freely clockwise and lock in the counterclockwise direction.
4 ) Install motor drive shaft assembly, carefully twisting shoulder of shaft through oil seal, item 711. Ensure that
oil seal is not damaged as motor drive shaft is installed.
DANGER
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
5) Install brake spacer, item 712, into brake housing, item 700. Starting and finishing with divider plate, alternately
install five divider plates, item 714, and four friction plates, item 715.
6 ) Install new, well-greased O-rings, item 751 and 753, into piston glands, item 750. Carefully install brake piston
in brake housing.
7 ) Install 10 brake springs, item 752, into the 12 holes of brake piston, leaving two holes vacant opposite each
other.
8 ) Use grease to temporarily hold a new O-ring, item 801, into recess on the flange of motor adapter, item 800.
Install new, well-greased O-ring item 707, onto motor adapter pilot.
9) Position motor adapter, with brake release pressure transfer holes of motor adapter and brake housing aligned.
Tighten 12 capscrews, item 821, and lockwashers, item 823, one turn at a time to evenly compress springs.
271 REV.970407
PAGE 17
SERVICE INSTRUCTIONS CONTINUED
REASSEMBLY OF HYDRAULIC MOTOR
If the 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. 23131) for hydraulic motor.
2 ) Install six new pocket seals, item 887, on each thrust plate, item 885. The seal kit includes a single strip of
rubber. Using a sharp knife, cut lengths to fit the openings in the thrust plates. Press one of the thrust plates,
together with six pocket seals, onto bearings, item 875, installed in motor adaptor, item 800, so that pocket
seals are against motor adaptor.
3 ) Install a well-greased body seal, item 869, on each side of gear housing, item 861. Slide the gear housing
together with the body 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 the other thrust plate, complete with six new pocket seals, onto bearings installed in port end cover so
pocket seals are facing 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
four hex capscrews, item 951, and lockwashers, item 953, to approximately 50 ft-lb (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 30% of maximum hydraulic volume).
- With winch running, evenly tighten four capscrews, item 951, to 200 ft-lb (270 Nm).
- Test motor operation by running winch at full speed in both directions.
IMPORTANT: Before operating the winch, add lubricating oil up to the level of the end housing 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 without load.
DANGER
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 18
271 REV.970407
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) Follow INSTALLATION and OPERATING INSTRUCTIONS when returning winch to its mounting.
When ordering parts for the PULLMASTER Model PL8 planetary winch, always quote the complete model and serial
numbers of the unit.
MODEL NO. _______________
SERIAL NO. _______________
WARNI
PULLMASTER 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.
271 REV.950401
PAGE 19
PARTS REFERENCE - DRUM GROUP
ITEM NO. QTY. PART NO. DESCRIPTION
100 1 22137 END HOUSING
101 1 25237 PIPE PLUG 3/4 - 14 NPT
300 1 20433 PLANET HUB FINAL
310 3 20438 PLANET PIN FINAL
311 3 25122 CIRCLIP ROTOR CLIP C-100
313 3 25411 CIRCLIP ROTOR CLIP SH-100
320 3 20437 PLANET GEAR FINAL
321 6 25098 THRUST WASHER TORRINGTON #TRA 1625
32 3 51 25308 LOOSE ROLLER 7/32 DIA X 1.50
340 1 20441 SUNGEAR FINAL
341 1 25311 CIRCLIP ANDERTON #A1000-0200
34 4 1 20450 SUNGEAR STOPPER
400 1 20431 PLANET HUB PRIMARY
402 1 20449 PLANET HUB STOPPER
410 3 20080 PLANET PIN PRIMARY
411 3 25119 CIRCLIP ROTOR CLIP C-62
413 3 25119 CIRCLIP ROTOR CLIP SH-62
420 3 20439 PLANET GEAR PRIMARY
421 6 25064 THRUST WASHER TORRINGTON #TRA 1018
423 3 25269 NEEDLE BEARING TORRINGTON #BH1016
440 1 20440 SUNGEAR PRIMARY
50 0 1 * CABLE DRUM
502 1 20085 CABLE ANCHOR
503 1 25032 PIPE PLUG 1/2 - 14 NPT
505 1 25327 OIL SEAL
507 1 25307 BALL BEARING 080 X 125 X 22 #6016
513 1 25086 CIRCLIP ROTOR CLIP HO-500
520 1 * COUPLING
530 1 20432 BEARING FLANGE
531 1 25327 OIL SEAL
533 1 25307 BALL BEARING 080 X 125 X 22 #6016
535 1 25086 CIRCLIP ROTOR CLIP HO-500
537 6 25118 CAPSCREW - HEX HEAD 3/8 - 16NC X 1.25 GRADE 5
539 1 25109 O-RING -269 8-3/4" ID 1/8" CS
541 6 25037 LOCKWASHER 3/8"
704 1 20449 PLANET HUB STOPPER
23101 WINCH SEAL KIT, CONSISTS OF ITEMS:
Refer to PAGE 22 for motor seal kit and PAGE 26 for ASSEMBLY DRAWING.
PAGE 20
505, 531, 539, 707, 710, 711, 751, 753, AND 801.
* These parts very according to cable drum code. Refer to APPENDIX B.
271 REV.970407
DRUM GROUP
G1085-A
310
502
503
402
311
320
340
101
100
313
420423421410411323321
413
505
507
513
520
344
440341500
400704
533535
530
539531
541
537300
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 PARTS REFERENCE list should be ignored.
271 REV.950401
PAGE 21
PARTS REFERENCE - BRAKE GROUP
ITEM NO.
700 1 22136 BRAKE HOUSING
703 1 25331 PLASTIC CAPLUG 3/4 NPT THR'D
707 1 25192 O-RING -174 8-3/4" ID 3/32" CS
710 1 20714 BACKUP WASHER FOR 25278
711 1 25278 OIL SEAL
712 1 21377 BRAKE SPACER
714 5 21252 DIVIDER PLATE
715 4 25194 FRICTION PLATE
717 2 25729 SUPPORT WASHER ANDERTON #R.28/40/2.0
720 1 20442 BRAKE HUB
722 1 21193 SPRAG CLUTCH ALIGNER
723 1 25187 SPRAG CLUTCH
724 1 21193 SPRAG CLUTCH ALIGNER
726 1 22672 SPRAG CLUTCH SPACER
727 1 25122 CIRCLIP ROTOR CLIP C-100
730 1 20448 MOTOR DRIVE SHAFT
731 1 25003 CIRCLIP ROTOR CLIP SH-75
733 1 25312 NEEDLE BEARING INA #HK3012
750 1 20434 PISTON
751 1 25309 O-RING -370 -90 DURO 8-1/4"ID 3/16" CS
752 10 20028 BRAKE SPRING
753 1 25309 O-RING -370 -90 DURO 8-1/4" ID 3/16" CS
800 1 21973 MOTOR ADAPTOR
801 1 25310 O-RING -012 -90 DURO 3/8" ID 1/16" CS
802 1 * SHUTTLE
803 1 25370 PIPE PLUG 1/16 - 27 NPT
804 1 * ORIFICE PLUG
805 3 25040 PIPE PLUG 1/8 - 27 NPT
807 1 * *
809 1 * PLASTIC CAPLUG 1/8 NPT
821 12 25118 CAPSCREW - HEX HEAD 3/8 - 16NC X 1.25 GRADE 5
823 12 25037 LOCKWASHER 3/8"
861 1 25323 GEAR HOUSING (2" GEARS) COMM. #312 8220 327
865 4 25326 DOWEL PIN COMMERCIAL #391 2082 032
869 2 25315 SEAL - BODY COMMERCIAL #391 2884 050
870 1 21759 PORT END COVER SUB-ASSY WITH PLUGS
875 4 25322 BEARING - ROLLER COMMERCIAL #391 0381 906
877 2 25908 SEAL - RING COMMERCIAL #391 2585 024
881 1 25317 GEAR SET (2" GEARS) COMM. #312 2820 007
885 2 25320 THRUST PLATE COMMERCIAL #391 2185 059
887 1 25321 SEAL STRIP COMMERCIAL #391 2882 051
899 2 25031 PIPE PLUG 1/4 - 18 NPT
929 1 * *
950 1 * SUB-ASSY MOTOR WM31 (2" GEARS)
951 4 25324 CAPSCREW - HEX HEAD 5/8 X 5.25 GRADE 5
953 4 25325 WASHER COMMERCIAL #391 3784 028
955 2 25556 PLASTIC CAPLUG 1.312" - 12
970 2 ** TIE BAR
971 16 25214 CAPSCREW - HEX HEAD 7/16 - 14NC X 1.50 GRADE 5
973 16 25328 LOCKWASHER 7/16"
QTY.
PART NO.
DESCRIPTION
23131 MOTOR SEAL KIT, CONSISTS OF ITEMS:
Refer to PAGE 20 for winch seal kit and PAGE 26 for ASSEMBLY DRAWING.
PAGE 22
869, 877, AND 887.
MOTOR SUB-ASSY, ITEM 950, CONSISTS OF ITEMS:
800, 802, 803, 804, 805, 807, 809, 861, 865, 869, 870,
875, 877, 881, 885, 887, 899, 929, 951, 953, AND 955.
* These parts vary according to brake code. Refer to APPENDIX C.
** These parts vary according to drum code. Refer to APPENDIX B.
271 REV.970407
950
953
BRAKE GROUP
973
971
970
955
951
869
929
877
899
870
875
887
885
G1084-B
881
803802800807809805801804751752714715712723
Item 723 - Was Part No. 25071 (Borg Warner sprag clutch # X13143 - Qty. 2)
Item 726 - Omitted
PRIOR TO SERIAL NO. 37869:
724
861865727 821823707 731753703722
720 726
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 PARTS REFERENCE list should be ignored.
710
717
271 REV.950401
730
733 711 750700
PAGE 23
INSTALLATION DIMENSIONS
PRESSURIZE FOR
COUNTER-CLOCKWISE
PORT 1/8-27 NPT
BRAKE RELEASE
OPTIONAL EXTERNAL
MODELS ONLY)
(EXTERNAL CIRCULATION
CIRCULATION PORT 3/8NPT
CLOCKWISE
ROTATION
MOTOR PORTS
PRESSURIZE FOR
COUNTER-CLOCKWISE
ROTATION
SAE O RING BOSS
SEE MOTOR CHART
FOR SIZES
M
K
L
.63
[16]
DRAIN PORT
1/4-18 NPT
GAUGE PORTS
3/4-14 NPT
R c/c
S
I
I1024-1-C
PAGE 24
3.2
D
B
[81]
must be maintained at all times.
ø
J
Standard cable anchor is suitable for 3/8 - 9/16 inch diameter rope.
C
FILLER PORT
1/2 - 14 NPT
FILLER PORT
3/4 - 14 NPT
A
ø
5/8 BOLTS
E
F
ø
4 MOUNTING HOLES
21/32 DIA [16.6]
USE
GRADE 5 OR BETTER
1.3
G
H c/c
[34]
FOR SAFETY: A minimum of 5 wraps of wire rope
271 REV.051117
DRUM
CODE
- 1
- 2
INSTALLATION DIMENSIONS
I1024-2
ABCDEFG H J K M R S
in 9.6 14.1 8.0 5.9 14.3 14.3 13.3 10.557 16.5 9.1 7.25 11.750 16.0
mm 244 359 203 150 364 364 337 268.15 420 230 184.2 298.45 406
in 9.6 14.1 10.0 5.9 14.3 14.3 15.3 12.557 18.5 9.1 7.25 11.750 16.0
mm 244 359 254 150 364 364 388 318.95 471 230 184.2 298.45 406
MOTOR
CODE
- 30
- 31
- 32
- 33
HYDRAULIC MOTORS
COMMERCIAL WM31 SERIES
GEAR
WIDTH
2.00
50.8
1.75
44.5
1.50
38.1
1.25
31.8
MOTOR PORT SIZE
SAE O-RING
1 5/16 - 12
1 5/16 - 12
1 1/16 - 12
1 1/16 - 12
in
mm
in
mm
in
mm
in
mm
I
6.0
152
5.8
146
5.5
140
5.3
133
L
5.4
137
5.4
137
5.4
137
5.4
137
271 REV.950401
PAGE 25
ASSEMBLY DRAWING
G1085-A & G1084-B-A
PAGE 26
271 REV.950401
APPENDIX A
DRUM
CODE
LINE PULL
CABLE DRUM SIZES
INCHES
(MILLIMETERS)
BARREL FLANGE LENGTH 9/16 in 1/2 in 7/16 in DRUM DRUM DRUM DRUM
WIRE ROPE STORAGE
FEET
(METERS)
AT MAXIMUM
PRESSURE*
POUNDS
(KILONEWTONS)
BARE FULL BARE FULL
LINE SPEED
AT MAXIMUM
VOLUME*
FEET/MINUTE
(METERS/MINUTE)
LUBRICATING
OIL
VOLUME
REQUIRED
U.S.
GALLONS
(LITERS)
-1 9.6 14.1 8.0 140 196 215 7000 5202 122 164 .5
(244) (359) (203) (43) (160) (66) (31.1) (23.1) (37) (50) ( 1 .9 )
-2 9.6 14.1 10.0 175 245 269 7000 5202 122 164 .8
(244) (359) (254) (53) (75) (82) (31.1) (23.1) (37) (50) ( 3. 0 )
* Performance specifications are based on standard hydraulic motor with 1/2 inch diameter wire rope.
271 REV.991224
PAGE 27
APPENDIX B
ITEM
DRUM
CODE
-1 20430 - 20436
-2 20820 20826 20819
500 520 970
CABLE DRUM COUPLING TIE BAR
PAGE 28
271 REV.960215
ITEM
NO.
APPENDIX C
BRAKE CODE
- 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10
PART
DESCRIPTION
PART NUMBERS
802
804
804
807
807
809
929
929
950
SHUTTLE
ORIFICE
PLUG
1/8-27 NPT
PIPE PLUG
1/8-27 NPT
PIPE PLUG
1/8-27 NPT
PIPE
ADAPTOR
1/8 NPT
CAPLUG
3/8 NPT
CAPLUG
3/8-18 NPT
PIPE PLUG
MOTOR
SUB-ASSY
N/A
21720
N/A
25040
N/A
N/A
N/A
25085
22026
20849
21720
N/A
N/A
25622
25374
N/A
25085
22027
20849
21720
N/A
N/A
25622
25374
N/A
25085
22028
N/A
21720
N/A
25040
N/A
N/A
N/A
25085
22029
N/A
N/A
25040
25040
N/A
N/A
25393
N/A
22303
20849
N/A
25040
N/A
25622
25374
25393
N/A
22083
20849
N/A
25040
N/A
25622
25374
25393
N/A
22084
N/A
N/A
25040
25040
N/A
N/A
25393
N/A
22304
271 REV.950401
PAGE 29
BOLT TORQUE CHART
BOLT DIAMETER
Inches
1/4 912
5/16 18 24
3/8 32 43
7/16 50 68
1/2 75 102
9/16 110 149
5/8 150 203
3/4 265 359
7/8 420 569
TORQUE
lb-ft
TORQUE
Nm
1 640 868
1 1/8 800 1085
1 1/4 1000 1356
1 3/8 1200 1627
1 1/2 1500 2034
NOTE: Unless otherwise specified, torque bolts per above chart.
PAGE 30
271 REV.950401
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