7C-4
1968 PONTIAC
SERVICE
MANUAL
-2
DETENT
CAM
PIVOT
PIN
DETENT
SPRING
3-4
DETENT
CAM
/
SHIFT
FORK
1-2
SHIFTER
SHAFT ASSY.^
REVERSE
SHIFTER
SHAFT
ASSY.
DETENT
SPRING
\
&
BALL
(UNDERNEATH)
1-2
SHIFTER
FORK
- 3-4
SHIFTER
SHAFT ASSY.
RETAINER
RING
Fig.
7C-3 Side Cover
Assy.
4.
Remove
front
bearing
to
main
drive
gear
snap
ring.
5.
Pull
main
drive
gear
out of
case
as far as
possible
and
remove
front
bearing
(Fig.
7C-5).
NOTE:
Although
front
bearing
is a slip fit on
main
drive
gear,
it may be
necessary
to aid re-
moval
with
screwdriver.
6.
Remove
extension
housing
to
case
attaching
bolts.
7.
From rear of
case,
remove
extension
housing
and
mainshaft
assembly
(Fig.
7C-6).
8.
Remove
main
drive
gear
and
fourth
speed
blocking
ring
from
inside
of
case
and
remove
14
bearing
rollers
from
main
drive
gear.
1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 17 18 19 20
i ; I t i i / i s < »
21 22
VVU; , ....
7l
24 ii
26
27
28
29 30
SB
31 32 33 34 35 36 37 38 39 40 41
Fig.
7C-4 Saginaw Four Speed Transmission
1.
Main
Drive Gear
2. Front* Bearing Retainer
3. Bearing Roller
4.
Case
5. Fourth Speed Blocking Ring
6. Third and Fourth
Synchronizer
Snap Ring
7. Third and Fourth
Synchronizer
Hub
8. Blocking Ring
9. Third Speed Gear
10. Second Speed Gear
11. Blocking Ring
12. First and Second
Synchronizer
Hub
13. First and Second
Synchronizer
Snap Ring
14. First Speed Blocking Ring
15. First Gear
16. Reverse Gear Thrust
and Spring Washers
17. Bearing To Mainshaft
Snap
Ring
18.
Case
Extension
19. Vent
20. Speedometer Drive Gear
21. Mainshaft
22. Rear Oil Seal
23. Bearing Retainer Oil Seal
24. Bearing To Gear Snap Ring
25. Front Bearing
26. Bearing To
Case
Snap Ring
27. Thrust Washer (Front)
28. Thrust Washer (Rear)
29. Bearing To Extension
Snap
Ring
30. Rear Bearing
31. Countergear Bearing
Ro
11
ers
32. Anti-Rattle Plate
Assy.
33.
Magnet
34. Third and Fourth Synchro-
nizer Sleeve (Sliding)
Countergear
Assy.
Countershaft
Reverse
Idler Shaft
38. First and Second Speed
Synchronizer
Sleeve and
Reverse
Gear
Reverse
Idler Gear
Clutch
Keys
Woodruff
Key
35.
36.
37.
39,
40,
41,
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