Tools Required

J 22912-B  Rear Pinion and Axle Bearing Remover

1. Remove the following components from the rear of the mainshaft (603):

•	5th/reverse drive gear and clutch hub thrust bearing (619)

•	5th/reverse drive gear (620)

•	5th/reverse drive gear and clutch hub inner bearing (621)

•	5th/reverse drive gear and clutch hub thrust bearing (622)

•	5th/reverse drive gear and clutch hub bearing race (623)

•	4th/5th clutch assembly (643)

•	4th/5th/reverse clutch housing fluid passage O-ring seals (604)

2. Remove the following from the front of the mainshaft (603):

•	Mainshaft front bearing retaining ring (600)

•	Mainshaft front bearing (601)

•	Mainshaft fluid passage seal (602)





Important: The 1st/2nd/3rd drive gear (641) does not remove from the mainshaft (603).

3. Using a hydraulic press and J 22912-B , remove the 4th drive gear with clutch hub assembly (642) from the mainshaft (603).

•	Protect the end of the mainshaft to avoid damage to the threads.

•	Ensure the J 22912-B is under the bearing race. Do not catch on or under the flange on the shaft.




4. Remove the 4th drive gear and clutch hub bearing retaining ring (605).
5. Using a brass drift and hammer, remove the 4th drive gear and clutch hub bearing (606) from the 4th drive gear (607).

1. Inspect the mainshaft (603) for the following conditions:

•	Worn or damaged splines

•	Bearing journals for excessive wear or damage

•	Damaged threads

•	Oil passage seal grooves for nicks, scratches, or other damage

2. Inspect the 1st/2nd/3rd drive gear (641) for the following conditions:

•	Excessive wear to the teeth

•	Chipped teeth

•	Cracked teeth

•	Looseness on the mainshaft

3. Replace the mainshaft (603) if any of the above conditions are found.



4. Inspect the following components for wear or damage:

•	5th/reverse drive gear and clutch hub thrust bearing (619)

•	5th/reverse drive gear (620)

•	5th/reverse drive gear and clutch hub inner bearing (621)

•	5th/reverse drive gear and clutch hub thrust bearing (622)

•	5th/reverse drive gear and clutch hub bearing race (623)

•	Mainshaft front bearing (601)

5. Replace any faulty parts.



6. Inspect the 4th drive gear (607) for the following conditions:

•	Excessive wear to the teeth

•	Chipped teeth

•	Cracked teeth

7. Inspect the 4th drive gear and clutch hub bearing (606) for wear or damage.
8. Replace any faulty parts.