Final Drive Assembly

Special Tools:

Disassembly





1. Remove rear planet support, No. 15 needle bearing, park gear, No. 16 needle bearing and final drive sun gear by lifting off.





2. Check to be sure hole in bushing in rear planet is aligned with lubrication passage. If not, replace support, as bushing is not serviced.





3. Remove seal and discard.
4. Install rear lubrication tube seal using Rear Lube Tube Seal Replacer 307-240 (T91P-76085-A).





5. Check snap ring to verify that it is fully seated in its groove.

Speedometer Drive Gear Removal:

6. If necessary remove speedometer drive gear by gently prying off with a suitable tool.





7. IF NECESSARY, use a drift to drive out differential pinion shaft roll pin.





8. Use a drift to tap out the differential pinion shaft.





9. Rotate the output shaft to remove two differential pinion gear and two differential pinion thrust washer.





10. Remove RH differential slide gear and differential side gear thrust washer from differential case.





11. Push output shaft towards center of differential housing. Slide LH differential side gear upward to gain access to retaining ring. Use snap ring pliers to remove retaining ring. Remove output shaft.





12. Remove differential side gear and differential side gear thrust washer.

Assembly





1. Inspect differential pinion and side gears for looseness, discoloration, cracks or excessive gear tooth wear. Inspect four final drive planet gears, two pinion shaft bores and pinion shaft for looseness, discoloration, cracks, excessive gear tooth wear or galling. Service as required.





2. If removed, install two differential side gear thrust washer, differential side gear, output shaft and retaining ring. Walk differential pinion gears and differential side gear thrust washers into position by rotating output shaft.





3. Tap differential pinion shaft through differential case, differential side gear thrust washers and differential side gears using a soft mallet. Make sure to align retaining pin hole in differential pinion shaft with hole in differential case.





4. Install new pinion shaft roll pin using a drift. Install pin so it is flush with differential housing.





5. If removed, position speedometer drive gear and gently tap into place using soft-faced hammer. Be sure gear is fully seated





6. Slide final drive sun gear, No. 16 needle bearing, park gear, No. 15 needle bearing and rear planet support into place.