21-3.1. REAR DIFFERENTIAL OUTPUT SHAFT SEAL REPLACEMENT
(SERIAL NUMBERS 300000 AND ABOVE)
This task covers:
General mechanic's tool kit:
automotive (Appendix B, Item 1)
Maintenance and repair shop equipment:
automotive (Appendix B, Item 2)
Axle shaft and seal installer
(Appendix B, Item 99)
O-ring (Appendix A, Item 215)
Locknut (Appendix A, Item 108)
Sealing compound (Appendix C, Item 63)
Replacement procedures for right and left rear differential output
shaft seals are basically the same. This procedure covers the right
side output shaft seals.
Remove locknut (3), O-ring (4), and output flange (5) from output shaft (8). Discard O-ring (4) and
Remove two capscrews (2) and brake adapter (1) from differential (9).
Remove output shaft seal (7) from differential (9).
Using axle shaft and seal installer (6), install output shaft seal (7) on differential (9).
Apply a liberal amount of thread sealing compound to the tapped
holes of differential. To allow adequate coating of threads, install
capscrews shortly after applying thread sealing compound. Failure
to do this could allow capscrews to loosen and cause damage to
Apply sealing compound to tapped holes of differential (9) and install brake adapter (1) on
differential (9) with two capscrews (2). Tighten capscrews (2) to 125150 lb-ft (170203 N·m).
Install output flange (5), O-ring (4), and locknut (3) on output shaft (8). Tighten locknut (3) to
170 lb-ft (231 N·m).