Shift Lever Shaft Or Seal Replacement; Input Shaft Bearing Replacement; Remov~Ng Countershaft Retaining Pin; Rotating Second And Third Shift Rail - Pontiac Grand Prix Service Manual

THREE-SPEED DEARBORN MANUAL TRANSMISSION 7A-7
COUNTERSHAFT ROLL PIN
I
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Fig. 7A-6 Remov~ng Countershaft Retaining Pin
23. Remove countergear and thrust washers.
24. Using a brass drift, drive reverse idler gear shaft
out of rear of case (Fig. 7A-11) and lift gear and thrust
washers from case.
25. Remove intermediate and high detent plunger and
spring.
SHIFT LEVER SHAFT OR SEAL REPLACEMENT
1. Remove nut, lockwasher and flat washer.
2. Remove shift lever.
3.
Slide shift lever shaft out of case and discard O-ring
seal.
4. Lubricate new seal and slide on shaft.
Fig. 7A-8 Rotating Second and Third Shift Rail
5. Install shaft in case.
6. Install shift lever and secure with nut, lockwasher
and flat washer.
INPUT SHAFT BEARING REPLACEMENT
1. Re-install input shaft in case.
2. Install large snap ring on,bearing.
3. Remove bearing to shaft retaining snap ring.
4. Position case in press (Fig. 7A-12) and press input
shaft out of bearing.
5. Remove shaft from case.
6. Place new bearing on input shaft.
Fig. 7A-7 Shift Rails, Forks, Detent Plugs and Detent
Springs