Removal & Replacement Of Acceleration Valves - Kohler K91 Owner's Manual

FIG.
66.
8.
Lay the pump end cap on a flat surface and
install the cylinder block
with
the piston and slipper
assembly on the valve plate.
10. Making sure the control shaft
is
on the correct
side, carefully install the aluminum pump housing and
shaft so the shaft spline enters the cylinder block and
gerotor drive. Install the four pump housing cap
screws to align the pump, gasket and end cap. Push
the pump housing in place (it may be necessary to
turn the pump shaft to align it with the charge pump
spline). After the housing and shaft are pushed in
place, tighten the four bolts evenly.
9. Center the charge pump gerotor drive so the
pump shaft and spline can enter it.
REMOVAL & REPLACEMENT
O F
ACCELERATION VALVES
NOTE:
Although the acceleration valves look similar,
they are not alike. The forward valve, located at the
rear of the end cap housing, incorporates wider relief
flats on the valve lands than does the reverse valve,
located at the front of the end cap housing.
40
FIG.
68. Acceleration Valves