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GENERAL:
Before attempting disassembly of the PULLMASTER model M75 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. 23839) on hand before the unit is taken apart.
NOTE: Oil seal must be installed with backup washer, if included with the seal kit (absence of backup washer in
a seal kit indicates, no back up washer required for oil seals).
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 drawing
and or on the assembly drawing.
DISASSEMBLY
For the majority of required service or repair work, disassembly may be required only on the brake housing of the
PULLMASTER Model M75 planetary winch. Since the parts are heavy, appropriate care should be taken during
disassembly and reassembly. Puller holes are provided on the parts, for safety, use of proper eye-bolts or any
other safe means must be used for handling parts during assembly and disassembly of the winch.
DRAIN OIL FROM THE WINCH:
To drain hydraulic oil from the Brake Housing item 700 remove Pipe Plug item 801.
To drain gear lube oil from the Primary Housing item 701 and Secondary Housing item 456 remove Pipe
Plugs item 121 and 457.
To drain gear lube oil from the Final Housing item 100 and Cable Drum item 500 remove Pipe Plug
item 121 from End Cover item 120 and Cable Drum item 500.
Proceed with the disassembly after draining the oil from the winch as described below:
SERVICE INSTRUCTIONS
354 REV.030819
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