TM 9-2320-272-24-3
4-101. FORWARD-REAR AND REAR-REAR AXLE REPLACEMENT
THIS TASK COVERS:
b. Installation
a. Removal
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
LO 9-2320-272-12
TM 9-2320-272-10
TOOLS
TM 9-2320-272-24P
General mechanic's tool kit (Appendix E, Item 1)
EQUIPMENT CONDITION
Torque wrench (Appendix %%, Item 145)
Air reservoirs drained (TM 9-2320-272-10).
Hydraulic jack
Remove wheels (para. 3-218 or para. 3-219).
Jack stands
GENERAL SAFETY INSTRUCTIONS
MATERIALS/PARTS
Do not attempt to support weight of vehicle on
Eight locknuts (Appendix D, Item 291)
hydraulic jack.
Two lockwashers (Appendix D, Item 354)
Do not disconnect air lines before draining air
Six lockwashers (Appendix D, Item 362)
Lubricating oil (Appendix C, Item 48)
reservoirs.
Antiseize tape (Appendix C. Item 72)
WARNING
Weight of vehicle must remain supported on jack stands at all
times. Do not attempt to support weight of vehicle on hydraulic
jack. Injury to personnel may result if hydraulic jack fails.
NOTE
Forward-rear and rear-rear axles are replaced the same way. This
procedure covers replacement of the rear-rear axle.
1.
Position hydraulic jack under differential housing (7) and raise vehicle.
2.
Position jack stands under spring seats (5) and rear axle (6), and lower vehicle until spring
seats (5) and rear axle (6) rest on jack stands.
3.
Remove eight locknuts (1), screws (4), and propeller shaft (3) from companion flange (2). Discard
locknuts (1).
WARNING
Do not disconnect air lines before draining air reservoirs. Small
parts under pressure may shoot out with high velocity, causing
injury to personnel.
NOTE
Perform step 4 for M939A2 series vehicles only.
Tag all air lines for installation.
4.
Disconnect two air lines (13) from elbows (14) on relief valve (15).
5.
Disconnect primary line (9) and vent line (8) and remove elbows (10) and (12) from right and left
service brake chambers (11).
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