Pontiac FIREBIRD 1972 Service Manual page 883

7D-14 1972 PONTIAC SERVICE MANUAL
17. Remove the 112 bearing rollers, six .050" bearing
washers and bearing spacer from countershaft gear
(Fig. 7D-22).
18. Remove 3rd
&
4th speed synchronizer retainer ring,
using J 932 (Fig. 7D-23), and slide 3rd & 4th speed
synchronizer assembly, 3rd speed gear and 3rd speed
synchronizer blocker ring from front of mainshaft.
19. Spread rear bearing locating ring and press mainshaft
out of the retainer (Fig. 7D-24).
20. Remove rear bearing retainer snap ring. Support 2nd
speed gear and press on rear of mainshaft to remove
rear bearings, 1st speed gear and sleeve, 1st speed
synchronizer blocker ring, 1st & 2nd speed synchro-
nizer assembly, 2nd speed synchronizer blocker ring
and 2nd speed gear from the mainshaft (Fig. 7D-25).
REVERSE SHIFTER SHAFT AND SEAL
REMOVE A N D REPLACE
1. With rear extension removed from transmission, the
reverse shifter shaft lock pin will already be removed
(see step 5 under TRANSMISSION
-
DISASSEM-
BLE).
2. Remove reverse shift fork.
3. Carefully drive the shifter shaft into rear extension,
allowing detent ball to drop into case. Remove shaft,
detent spring and detent ball.
4. Place detent spring into detent spring hole and, from
inside of extension, install shifter shaft fully into its
opening until its detent plate is butted against inside
of rear extension.
Fig. 7 0 - 2 4 Pressing Mainshaft from Rear Bearing Retainer
Fig. 7 0 - 2 5 Pressing Mainshaft from Rear Bearing, 1st
Fig. 7 0 - 2 3 Removing 3rd & 4th Speed Synchronizer
Retainer Ring
Speed Gear, 1st
&
2nd Speed Synchronizer ~ s s e m b l ~ and
2nd Speed Gear