11.Inspect the cam washer shoe surface.It
should be free of scratches and wear marks.
IMPORTANT: Piston face damage can be
caused by towing unit,dry start-up,
or loss of charge pressure.
Piston Block Disassembly:
NOTE: Disassembling the piston block
assembly is not necessary unless the
spring or pins are damaged.
The following parts will be needed to disassemble
the piston block.
2ea------------3/8 IDX1-1/4 in .OD flat washers.
1ea------------3/8X 5in.N.C. cap screw
1ea------------3/8 in .N.C.nut
1ea------------1/2 in.Drive Socket with 1-1/8 in.OD
14.Screw the nut on and slightly compress the spring
inside the piston block.
15.Use retaining ring pliers to remove the internal
retaining ring.
16.Carefully back off tension on nut until spring is
slack.
17.Remove the nut,Washer,and cap screw.
18.Remove washers,spring,pins,and pin retainer.
19.Inspect the spring inside the piston block for
damage.Inspect pins for straightness.
12.Place one of the flat washers over the 3/8X5 in.
cap screw through spline end of piston block so
that the washer rests on the three pins.
13.place the socket and then the washer over the end
of the cap screw.
IMPORTANT: Due to extremely tight tolerances,
and finish of internal surfaces,it is very important to
maintain absolute cleanliness during the assembly of
the motor.Coat all internal surfaces with clean
10W30 motor oil when assembly
Main shaft Bearing Installation:
Note: All needle bearings are pressed in with
numbers facing out.
4-35
Retaining ring
Needle Bearing
(numbers facing out)
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