Transmission-Remove - Pontiac tempest 1968 Service Manual

FOUR SPEED M U N C I E M A N U A L TRANSMISSION 7D-7
MAJOR REPAIRS
TRANSMISSION-REMOVE
1. Remove drain plug at bottom of transmission
and drain lubricant.
2. Disconnect the speedometer cable from speed­
ometer driven gear fitting and disconnect back-up
light leads from back-up light switch.
3. Disconnect shift control rods from shifter
levers. Remove two levers and bracket to extension
support screws and remove manual shift lever and
bracket.
4. Remove propeller shaft drive line assembly:
a. Remove U-bolt nuts, lock plates and U-bolts
from rear axle drive pinion flange.
b. Use rubber band to hold bearing onto jour­
nals, if the wire has been removed, to prevent loss
of needle bearings when rear joint is disconnected.
c. Remove complete drive line assembly by
sliding rearward to disengage yoke from splines
on transmission mainshaft.
5. Support rear of engine and remove two trans­
mission extension insulator to cross member support
retaining bolts (see Section 6).
6. 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 pre­
vent damage to the clutch disc through springing.
7. Remove the two lower transmission to clutch
housing bolts.
8. Tilt rear of extension upward to disengage
bracket studs from cross member support and with­
draw transmission from clutch housing.
9. Remove the transmission.
TRANSMISSION-DISASSEMBLE
1. Remove transmission side cover assembly from
transmission case.
NOTE: If cover assembly is to be disassembled
for inspection or replacement of worn parts, fol­
low procedures 2 through 8 under TRANSMISSION
SIDE COVER - REMOVE AND DISASSEMBLE,
page 70-4.
3. Remove four bolts from front bearing retainer
and remove retainer and gasket.
4. Remove the main drive gear retaining nut (Fig.
7D-9), using tool J 933 after locking up transmis­
sion by shifting into two gears.
F i g . 7 D - 9 Removing Main Drive G e a r Retaining Nut
NOTE: Nut has left hand threads.
5. With transmission gears in neutral, drive lock
pin from bottom side of reverse shifter lever boss
and pull shaft out about 1/8". This disengages the
reverse shift fork from reverse gear (Fig. 7D-10).
2. Remove insulator assembly from transmission
rear extension.
F i g . 7 D - 1 0 Removing Reverse Shifter Shaft Lock Pin