Pressure Regulator Valve - Buick LeSabre 1965 Service Manual

5 - 4 4 SERVICE PROCEDURES
SUPER TURBINE "300'
( 4
c jy|
SNAP R I N G — _ ^
BOOST VALVE jWr
SLEEVE J ^ F
^ y r BOOST VALVE
^ ^ ^ ^ ^ SPRING
^ 1 vT -WASHER
r
S H I M
^ ^ PRESSURE REGULATOR VALVE
Figure 5-193
10. Compress reverse and modu-
lator boost valve with thumb and
remove retaining snap ring. See
Figure 5-192.
CAUTION: Reverse and modu-
lator boost valve sleeve is under
extreme spring pressure. Ex-
treme care should be taken after
retaining snap ring has been
removed.
11. After retaining snap ring has
been removed, remove reverse
and modulator boost valve sleeve
and valve, spring, washer, and
pressure regulator valve. See
Figure 5-193.
12. Examine oil pump seal. If
nicked, torn or worn remove seal
as follows: Support oil pump body
on wood blocks. Remove oil seal
Figure 5-194
with a screwdriver and discard.
See Figure 5-194.
13. Check oil pump bushing for
nicks, severe scoring or wear.
If bushing replacement is neces-
sary proceed as follows: Support
pump on wood blocks using Tool
J-21465-17 and Drive Handle
Figure 5-195
J-8092. P r e s s bushing out of
pump body. See Figure 5-195.
14. Check stator shaft bushing for
•-.1-21424-7
J-21465-1
Figure 5-196
nicks, severe scoring or wear.
If bushing replacement is neces-
sary proceed as follows: Assem-
ble Bushing Remover J-21424-7
to Extension J-21465-13. Assem-
ble this assembly to Drive Handle
J-8092. Grasp stator shaft with
hand using other hand and as-
sembled tool drive out bushing.
See Figure 5-196.
b. Inspection
1. Wash all parts in a cleaning
solvent and blow out oil passages
with compressed air.
2. Inspect pump gears for nicks
or damage.