TM-9-2320-272-24-3
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4
JUNE 1998
TM-9-2320-272-24-3 - Page 230 of 799
TM 9-2320-272-24-3
4-78. TRANSMISSION OUTPUT SHAFT YOKE AND OIL SEAL REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
All
SPECIAL TOOLS
Output shaft seal and dust shield remover
(Appendix E, Item 92)
Dust shield installer (Appendix E, Item 39)
Oil seal installer (Appendix E, Item 91)
Driver handle (Appendix E, Item 37)
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
Mechanical puller (Appendix E, Item 102)
Torque multiplier
MATERIALS/PARTS
Locknut (Appendix D, Item 325)
Oil seal (Appendix D, Item 503)
Lubricating oil (Appendix C, Item 48)
REFERENCES (TM)
LO 9-2320-272-12
TM 9-2320-272-10
TM 9-2320-272-24P
EQUIPMENT CONDITION
l
Parking brake set (TM 9-2320-272-10).
l
Propeller shaft removed (para. 3-148).
SPECIAL ENVIRONMENTAL CONDITIONS
Work area must be clean and free from blowing dust
and dirt.
a. Removal
1.
Remove locknut (3) from output shaft (1). Discard locknut (3).
2.
Using mechanical puller, remove companion flange (2) from output shaft (1).
NOTE
Have drainage container ready to catch oil.
3.
Using output shaft seal and dust shield remover, remove dust shield (4) and oil seal (5) from bore of
transmission housing (6). Discard oil seal (5).
b. Installation
1.
Using oil seal installer and driver handle, install new oil seal (5) in bore of transmission housing (6).
Ensure rubber lip faces inside of rear cover (7).
2.
Apply lubricating oil to inside diameter of oil seal (5).
3.
Using dust shield installer and driver handle, install dust shield (4) in bore of transmission
housing (6) with cupped side facing out until installer tool seats on face of rear cover (7).
4.
Slide companion flange (2) on output shaft (1) and install with new locknut (3). Using torque
multiplier, tighten locknut (3) 600-800 lb-ft (814-1,085 N
l
m).
4-494
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