Pontiac FIREBIRD 1972 Service Manual page 880

FOUR-SPEED MUNCIE TRANSMISSION 7D-11
1
MAJOR REPAIRS
1
TRANSMISSION
REMOVE
1. Disconnect the speedometer cable from speedometer
driven gear fitting and disconnect leads from back-up
light switch and TCS switch.
2. Disconnect transmission shifter levers (1st & 2nd,
3rd
&
4th and Reverse) from transmission shifter
shafts (Fig. 7D-9). Remove two (2) shifter assembly-
to-extension support bolts and, if shifter assembly
removal is not required, it may be left hanging in its
floor seal.
3. Remove propeller shaft assembly as outlined in Sec-
tion 4E.
4. Support rear of engine and remove two transmission
extension insulator-to-cross member support retain-
ing bolts (see Section 6).
5. Remove the two top transmission-to-clutch housing
bolts and insert two Transmission Aligning Studs J
1126 in these holes.
NOTE: The use of two aligning studs during
this operation will support the transmission
and prevent damage to the clutch disc through
springing.
6. Remove the two lower transmission-to-clutch hous-
ing bolts.
7. Tilt rear of extension upward to disengage bracket
studs from cross member support and withdraw
transmission from clutch housing.
8. Remove the transmission.
DISASSEMBLE
1. Remove transmission case cover assembly from
transmission case and drain lubricant.
NOTE: I f cover assembly is to be overhauled
for inspection or replacement of worn parts,
follow procedures 5 throu~h 8 above under
TRANSMISSZON
CASE
COVER
-
REMOVE.
2. Remove insulator assembly from transmission rear
extension.
3. Remove four bolts from clutch gear bearing retainer
and remove bolt locks, retainer and gasket.
4. Remove the clutch gear bearing retainer nut (Fig.
7D-16), using Tool J 933 after locking up transmis-
sion by shifting into two gears.
NOTE: Nut has left hand threads.
5. With transmission gears in neutral, drive lock pin
from bottom side of reverse shifter shaft boss and pull
shaft out about 1/2". This disengages the reverse
shift fork from reverse gear (Fig. 7D-17).
6. Remove bolt, lockwasher, retainer and speedometer
driven gear from rear extension.
Fig. 7D-16 Removing Clutch Gear Bearing Retainer Nut
Fig. 7D-17 Removing Reverse Shifter Shaft Lock Pin