TM 9-2320-272-24-2
3-456. FRONT WHEEL VALVE MAINTENANCE
THIS TASK COVERS:
a. Removal
c. Installation
b. Cleaning and Inspection
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
M939A2
TM 9-2320-272-10
TM 9-2320-272-24P
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit (Appendix E, Item 1)
q Parking brake set (TM 9-2320-272-10).
MATERIALS/PARTS
q Air reservoirs drained (TM 9-2320-272-10).
Three locknuts (Appendix D, Item 334)
GENERAL SAFETY INSTRUCTIONS
Three lockwashers (Appendix D, Item 400)
O-ring (Appendix D, Item 437)
Eyeshields must be worn when releasing
O-ring (Appendix D, Item 487)
compressed air.
Four locknuts (Appendix D, Item 273)
Antiseize tape (Appendix C, Item 72)
a. Removal
WARNING
Air system components are subject to high pressure. Always relieve
pressure before loosening or removing air system components.
Remove cap (2) and valve stem (3) from tank valve (5), and allow tire (18) to deflate completely.
1.
Install valve stem (3) and cap (2) on tank valve (5).
Remove two locknuts (27), washers (26), screws (28), washers (29), shield (1), and spacer (25) from
2.
studs (16) and axle flange (20). Discard locknuts (27).
Remove hose (15) from elbow (7) and turret valve (17).
3.
4.
Loosen nut (14) and remove air manifold (22) from wheel valve (4).
Remove screw (24), washer (23), air manifold (22), and O-ring (21) from axle flange (20) and air
5.
tube (19). Discard O-ring (21).
Remove two locknuts (8), washers (9), washers (10), and wheel valve (4) from studs (16). Discard
6.
locknuts (8).
Remove three locknuts (13), lockwashers (12), and bracket (11) from wheel valve (4). Discard
7.
locknuts (13) and lockwashers (12).
Remove elbow (7) and O-ring (6) from wheel valve (4). Discard O-ring (6).
8.
NOTE
For repair of wheel valves, refer to para. 3-461.
b. Cleaning and Inspection
1.
For general cleaning instructions, refer to para. 2-14.
2.
For general inspection instructions, refer to para. 2-15.
3.
Inspect wheel valve (4) for cracks, leaks, and stripped threads. Replace or repair wheel valve (4) if
cracked, leaking, or threads are stripped.
4.
Inspect bracket (11), shield (1), air manifold (22), hose (15), spacer (25), elbow (7), and turret
valve (17) for cracks, bends, or stripped threads. Replace parts if damaged.
3-1244
