Disassembly And Assembly Of Cylinder Blocks And Piston Assemblies; Disassembly; Assembly - Kohler K91 Owner's Manual

DISASSEMBLY AND ASSEMBLY
OF CYLINDER BLOCKS AND
PISTON ASSEMBLIES
NOTE:
Although the pump cylinder block and the
motor cylinder block assemblies are similar, they are
not alike.
FIG. 86.
Cylinder blocks and pistons are serviced as a kit.
However, they may
be
taken apart for cleaning and
inspection. Note the position of each piston so that
it may
be
returned to its original cylinder bore.
FIG.
87.
Cylinder Block Washers, Springs, and Spring Seats
Disassembly
1.
Remove the pistons, slippers and slipper re-
tainer assembly from the cylinder block. (See Fig.
88).
2.
Make up a special spring compressor made
from a
3/8"
x
3"
long hex head
bolt,
nut,
3/8
SAE
washer and a
3/8"
I.D.
x
15/16"
O.D. washer.
3.
Center the
15/16"
O.D.
washer on the cylinder
block spring retainer. Insert the
3/8
x
3"
bolt through
the washer and on through the cylinder block. Place
the
3/8
SA€ washer and nut on the end of the bolt and
tighten the nut until the spring i s compressed.
roloc retaining ring.
4.
With the spring compressed, remove the spi-
5.
Loosen and remove the compressor and remove
the outside retaining washer, spring, and inside spring
seat.
NOTE: The pump cylinder block incorporates a flat
washer for the inside spring seat.
The
motor cylinder
block incorporates a special spring seat retainer which
also serves as the stop for the motor shaft spring clip.
FIG. 88.
Before removing Piston
Mark both Piston and Cylinder Bore with Tape
FIG. 89.
Remove Retaining Ring using special Compressor Tool
Assembly
1.
Install the inside spring retainer
in the cylinder
block (washer,
if
a pump cylinder block special
retainer if a motor cylinder block). When installing the
special retainer in the motor cylinder block, make sure
that the large end
is
placed toward the spring.
2.
Install the spring in the bore of the cylinder
3.
Place the outside retainer washer on the coil
block.
spring.
4.
Using the special spring compressor tool, com-
press the spring and install the spiroloc retaining ring.