Bearings and Races

In addition to the bearings pressed onto the main shaft and pinion shaft, there are needle bearings in the transmission case and gear carrier housing, as well as the bearing races and shims. While the main shaft ball bearing is removed with the main shaft when the transmission is disassembled, it must be pressed off the main shaft as shown in Fig. 7-27 before reassembly. It is then installed in the transmission case as shown earlier in Fig. 7-15.

Fig. 7-27.

Main shaft ball bearing being pressed off main shaft. For reassembly, ball bearing is first installed in transmission case, not on main shaft.

Remove the main shaft needle bearing and press the new bearing into place as shown in Fig. 7-28.

Fig. 7-28.

Main shaft needle bearing being removed (top) and installed (bottom).

The pinion shaft small bearing outer race is also pulled out as shown in Fig. 7-29. The bearing should be adjusted as described below before final installation of the race.

Fig. 7-29.

Pinion shaft small-bearing outer race being pulled out. Check adjustment of bearing as described below before final installation of race.

Drive the pinion shaft needle bearing out from the outside of the case as shown in Fig. 7-30, and drive the new bearing in from the inside.

Fig. 7-30.

Pinion shaft needle bearing being removed from (top), and installed in (bottom), transmission case.

Remove and install the pinion shaft large bearing as shown in Fig. 7-31. Remove and install the pinion shaft small bearing as shown in Fig. 7-32. Both bearings must be heated to approximately 212°F (100°C) for installation.

Fig. 7-31.

Pinion shaft large bearing being removed (top) and installed (bottom). Heat new bearing to 212°F (100°C) before pressing it on.

Fig. 7-32.

Pinion shaft small bearing being removed (top) and installed (bottom). Heat new bearing to 212°F (100°C) before pressing it on.

The clutch pushrod seal is pried out of the pinion shaft. The transmission must be removed from the car, but the seal can be replaced with the transmission still assembled. Install the seal as shown in Fig. 7-33. The pushrod bushing can be driven out using a 10 mm (3/8 in.) rod (such as an old automatic transmission pump rod) inserted into the pinion shaft from the opposite end. Drive the new bushing in until it is fully seated.

Fig. 7-33.

Drive in clutch pushrod oil seal until plug supplied with new oil seal is flush, then remove plug. If plug is not on oil seal, install to depth of 0.8 to 1.3 mm (.03 to .05 in).