Kohler K91 Owner's Manual page 318

5 . The
relief valve should be removed for cleaning.
Remove the cap nut; discard the gasket (Fig.
15).
6. Using a center punch, lightly mark the adjust-
ment set screw and valve body so the set screw
can be returned to
i t s
exact position. Do not
tamper
with
relief valve setting; severe trans-
mission damage may result
if
it is incorrectly
set.
7.
Remove the set screw, spring and ball.
MUST BE RETURNED TO
ORIGINAL POSITION
FIG. 15.
Implement Relief Valve
8.
Reassemble the valve in reverse order, using
the new parts supplied in the kit. The following
assembly notes apply:
a. Be sure to place the relief valve set screw
i n its exact original location.
b.
The overhaul
kit
contains a new relief valve
spring and ball. Use these parts only
if
necessary due to damage or wear.
If
the
original parts are replaced, implement
system pressure should be checked using
an accurate gauge.
If
not
700 PSI,
carefully
adjust the relief valve set screw to obtain
this value. Gauge connection is shown in
the Eaton Model
1 1
Automatic Transmission
Repair Manual.
Disassembly (TWO SPOOL VICTOR)
IMPORTANT NOTE: Spools and valve body are a
matched set and cannot be interchanged.
1. Remove spool without detent first; Remove two
screws, end cap, spacer screw, spacer, spring, and
washer from valve (Fig.
16).
SPOOL
BORE
SPOOL
LINK
a
COTTER PIN
CLEVIS
PIN
a
COTTER PIN
FIG. 16. Spool
Without Detent
2.
Remove cotter pin and link from valve body and
handle. Pull handle and spool out of valve. Re-
- 5
move cotter pin, clevis pin and handle from spool.
Remove
"O"
Rings from valve body.
3.
Remove two detent plugs, springs and balls from
detent end cap (Fig.
17).
Remove two detent end
cap screws and end cap from valve.
FIG. 17.
Spool With Detent
4. Unscrew detent screw from spool and remove spac-
er, spring and two washers from valve.
5. Remove cotter pin and link from valve body and
handle. Pull handle and spool out of valve. Re-
move cotter pin, clevis pin and handle from spool.
Remove
"0"
Rings from valve body.
NOTE: Relief valve should be removed for inspec-
tion and cleaning (Fig. 18). Overhaul kit
contains
a new relief valve spring, ball retainer and ball.
Use these parts only
if
necessary due to damage or
wear. Record number of turns of adjustment screw
during removal.
6.
Remove relief valve cap and steel gasket from
valve (Fig.
18).
VALVE BODY
FIG. 18. Pressure Relief Valve
7 .
Punch aligning marks on end of adjustment screw
and valve body. loosen screw jam nut. Unscrew
adjustment screw and remove screw and steel
gasket from valve body. Record number of turns
taken to remove adjustment screw.
from valve.
8. Remove relief valve spring, ball retainer and ball
9.
Remove two load check valve plugs,
"O"
Rings,
springs and poppets from valve (Fig.
19).