Pump Housing Disassembly & Assembly; Disassembly; Assembly Of Pump Housing - Kohler K91 Owner's Manual

PUMP HOUSING
DISASSEMBLY & ASSEMBLY
SWASH PLATE (CROSS SECTION)
CONTROL SHAFT
Disassembly
1. Remove the thrust plate from the swash plate
assembly.
STUB SHAFT
FIG. 57.
5.
Using a
3/16"
punch, drive the swash-plate-to-
trunnion-shaft roll pins out toward the closed end of
the case. Note: One roll pin
is
used at the short stub
shaft and two roll pins are used at the control shaft.
6. Remove the trunnion shaft retaining rings and
washers. Drive the stub trunnion shaft in from the
outside and remove. Drive the control shaft out from
the inside :using a long punch inserted through the
removed trunnion shaft hole.
7.
Remove the swash plate housing.
8.
Pry out the trunnion seals, being careful not to
damage the housing. Note:
If
examination of the
trunnion shaft needle bearings and the pump shaft
ball bearing shows them to
be
in good condition,
steps 9 and 10 should not be performed.
9.
Using a suitable arbor such as a socket, press
or drive needle bearings out of the housing from the
inside.
FIG. 55.
Seal Removal
2.
Remove the pump shaft seal.
a. Use a sharp awl and puncture the seal
retainer.
b.
Pry out the seal, being careful not to
scratch or damage the shaft seal surface
or the aluminum housing.
3. Using snap ring pliers remove the retaining
ring from the shaft.
FIG. 56.
4.
Remove the shaft by tapping on the input
(both ends are splined) end and pushing it through
the bearing.
FIG. 58. Needle Bearing Removal
37