Pontiac tempest 1968 Service Manual page 526

T W O SPEED A U T O M A T I C TRANSMISSION
7F-25
F i g . 7 F - 7 2 Removing O i l Seal Rings
CA UTION: Valve spring is under high force. Use
extreme care after snap ring has been removed in
step 7 below.
7. Compress main pressure regulator valve spring
by pressing on boost valve sleeve with thumb and
remove retaining snap ring (Fig. 7F-74).
RELIEF BALL
SPRING
RETAINING
PIN
-rn.
Fig. 7 F - 7 4 Removing Boost Valve Sleeve Snap Ring
8. Remove boost valve sleeve, valve, spring,
washer and pressure regulator valve (Fig. 7F-75).
9. Remove oil pump seal with a small pry bar and
discard seal (Fig. 7F-76).
INSPECTION
1. Check oil pump bushing for nicks, severe scor­
ing or wear.
2. Check stator shaft bushing for nicks, severe
scoring or wear. If replacement is necessary, see
STATOR SHAFT BUSHING R E P L A C E M E N T below.
3 . Inspect pump gears for nicks or damage.
4. Inspect pump body for nicks or scoring.
5. With dial indicator set, check for clearance
(Fig. 7F-77). Correct end clearance is .0005" to
.0015".
6. Inspect pressure regulator valve and boost
valve and sleeve for nicks or burrs.
BOOST VALVE WASHER PRESSURE REGULATOR
F i g . 7 F - 7 3 Converter Blow Off Valve F i g . 7 F - 7 5 Main Pressure Regulator