Pontiac tempest 1968 Service Manual page 480

T U R B O H Y D R A - M A T I C TRANSMISSION
7E-45
or drive replacement bushing into place until tool
bottoms.
SUN GEAR SHAFT BUSHING, R E A R -
Remove
With sun gear shaft properly supported and using
tool J 21465-15 with slide hammer J 2619, remove
bushing.
Replace
Using tool J 21465-5 with adapter J 8092, press
or drive replacement bushing into place until tool
bottoms.
4. Inspect ground bushing journals for damage.
5. Be sure o i l lubrication hole is open.
£. MAIN SHAFT
1. Inspect shaft for cracks or distortion.
2. Inspect splines for damage.
3. Inspect ground bushing journals for damage.
4 . Inspect snap ring groove for damage.
5. Inspect orificed cup plug pressed into one end
of mainshaft. Be sure i t is not plugged and o i l
lubrication holes are open.
NOTE: If mainshaft replacement is required, it is
necessary to use a shaft with the identification
groove on the ground journal at the internal gear
end of the shaft. Because of a spline change, the
1968 shaft is NOT interchangeable with pre 1968
parts.
F. FRONT AND REAR BANDS
1. Inspect lining for cracks, flaking, burning or
looseness.
2. Inspect bands for cracks or distortion.
3. Inspect end for damage at anchor lugs or apply
lugs.
G. CASE EXTENSION
1. Inspect bushing for excessive wear or damage.
If replacement is necessary, proceed as follows:
b. Using tool J 21465-17, Install new bushing,
flush to .010" below rear chamfer.
c. Stake bushing in place, using tool J 21465-10
in diamond area of bushing lube groove.
2. Inspect gasket mounting face for damage.
3. Inspect housing for cracks or porosity.
4. Be sure rear seal drain back port Is not
obstructed.
H. MODULATOR AND VALVE
1. Inspect modulator assembly for any signs of
bending or distortion (Fig. 7E-120).
2. Inspect O-ring seal seat for damage.
3. Apply suction to vacuum tube and check for
diaphragm leaks.
4. Check modulator bellows (modulator plunger
is under pressure - 16 lbs.). I f bellows are damaged,
plunger w i l l have very little pressure.
5. Inspect modulator valve for nicks or damage.
6. Check freeness of valve operation in case bore.
I. MANUAL AND PARKING LINKAGE
1. Inspect parking actuator rod for cracks or
broken spring retainer lugs (Fig. 7E-121).
2. Inspect actuator spring for damage.
3. Inspect actuator for free f i t on actuator rod.
4. Inspect parking pawl for cracks or wear, i f
removed.
MODULATOR
VALVE
- i \
^ ^ ' OIL RING MODULATOR
a. Install tool J 21465-17 and remove bushing.
F i g . 7E-120 Modulator and V a l v e