TM 9-2320-387-24-2
21-4. PINION SEAL REPLACEMENT
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Equipment Condition
Service brake rotors removed
(para. 7-12).
Special Tools
Yoke seal installer
(Appendix B, Item 82)
Manual References
TM 9-2320-387-24P
Maintenance
Level
Direct support
NOTE
The replacement procedure for pinion seals is basically the same
for front and rear differential. This procedure covers the rear
differential pinion seal.
I[
1.
Remove four capscrews (71, two straps (6), and rear propeller shaft (1) from pinion flange (3).
2.
Using a lb-in. torque wrench, measure torque required to rotate pinion (41, and record measurement.
3.
Count and record number of exposed threads on end of pinion (4) and mark locknut (2) and
pinion (4) for assembly.
4.
Remove locknut (2) and pinion flange (31 from pinion (4).
5.
Remove pinion seal (5) from pinion (4).
I]
1.
2.
3.
4.
5.
Using seal installer, install pinion seal (5) on pinion (4).
Install pinion flange (3) on pinion (4) with locknut (2).
Tighten locknut (2) to original position.
Tighten locknut (2) in small increments, until torque required to rotate pinion (4) exceeds original
measurement by 2 lb-in. (0.2 N-m).
Install rear propeller shaft (1) on pinion flange (31 with two straps (6) and four capscrews (7).
Tighten capscrews (7) to 60 lb-R (81 N.m).
21-4
