Pontiac firebird 1968 - Page 416

FOUR SPEED SAGINAW MANUAL TRANSMISSION 7C-7
2. Install a blocking ring with clutching teeth
downward over synchronizing surface of the third
speed gear.
NOTE: All 4 blocking rings in the transmission
are the same and interchangeable.
8. Install 1st and 2nd synchronizer snap ring
(Fig. 7C-4).
9. Install blocker ring with notches downward so
they align with keys of 1st and 2nd synchronizer
assemblies.
3. Install 3rd and 4th synchronizer assemblies
with the fork slot downward, pressing it onto splines
on the mainshaft until it bottoms out (Fig. 7C-13).
CAUTION: Be sure the notches of the blocker
ring align with the keys of the synchronizer
assembly.
10. Install first gear with clutching teeth
downward.
11. Install first gear thrust washer (steel) and
spring washer.
12. With snap ring slot downward, press rear
bearing onto mainshaft (Fig. 7C-15).
4. Install 3rd and 4th synchronizer snap ring.
Both synchronizer snap rings are the same.
5. Turn the rear of the mainshaft upward and in-
stall second speed gear with clutching teeth upward;
front of gear will butt against flange on mainshaft.
6. Install blocker ring with clutching teeth down-
ward over synchronizing surface of second gear.
7. With fork slot downward, press 1st and 2nd
synchronizer assemblies onto splines of mainshaft
(Fig. 7C-14).
CAUTION: Be sure notches of blocker ring align
with keys of synchronizer assembly.
FORWARD
END OF
MAINSHAFT
mm
1ST.-2ND.
SYNCH RONIZER
SPLIT RING
1ST GEAR
v
REAR BEARING
FORWARD END
OF MAIN SHAFT
SPLIT RING
Fig. 7C-15 Installing Rear Bearing
13. Install rear bearing snap ring (Fig. 7C-4).
14. Place speedometer gear retainer in output
shaft.
15. Align slot in speedometer drive gear with re-
tainer clip and slide gear into place.
Fig. 7C-14 Installing 1st and 2nd Synchronizer
and Second Gear
COUNTER GEAR-ASSEMBLE
Refer to Section 7B.