Kohler K91 Owner's Manual page 238

F I G . 27.
Ring Installation
F I G . 29.
Ring and Bolt locations
Place a protective cardboard cover over the seal
rings to hold them in place and keep the area free and shape them as required to hold the tubes firmly.
from dirt during installation.
The
following photograph shows the front of the
manifold as it is inserted past the steering gear bracket
turned to position
it
for attachment to the pump pad.
Leave the protective cover on this pad while the rear
of the manifold
i s
being connected to the hydraulic
motor.
FIG. 28.
Protected Seal Rings
The following photograph shows the location of
the seal rings and manifold attaching bolts at the
hydraulic motor pad.
NOTE:
Two
3/8"
bolts and wash-
ers are at the left side of the pad and two
%''
bolts
at the right side. Also note that the rear
1/2"
bolt does
not use a washer.
The
front
1/2"
bolt, however, requires
FIG. 30.
Positioning the Manifold
a special seal washer.
Also,
an O-ring i s used at this
corner between the manifold and the motor pad.
These
extra seals are required since this bolt goes
down into a pressure area.
If
it
i s not sealed, there
will be a major oil leak. Before installing seal rings,
place a small amount of grease in each recess and
on all seal rings. Place one small O-ring in each of
the two low pressure ports and one at the right front
bolthole recess. Place a large O-ring in each of the
high pressure ports and then place a square section
back up ring exactly over the top of each of the large
O-rings. Make sure no dirt or foreign matter falls into
this area while installing the manifold.
Prior to installing the manifold examine
it
care-
fully for cracks around the tubing welds and make
sure the clamp prevents the tubes from flexing.
If
the
tubes can be moved in the clamp, remove the clamps
F[G. 31. Rear Manifold Pad in Place
29