TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 884 of 1015
TM 9-2320-272-24-1
3-189. BRAKE CHAMBER AIR MANIFOLD TEE REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
MATERIAL/PARTS
Lockwasher (Appendix D, Item 354)
Antiseize tape (Appendix C, Item 72)
TM 9-2320-272-10
TM 9-2320-272-24P
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-272-10).
Air reservoirs drained (TM 9-2320-272-10).
GENERAL SAFETY INSTRUCTIONS
Do not disconnect air lines before draining air
reservoirs.
Do not disconnect air lines before draining air reservoirs. Small
parts under pressure may shoot out with high velocity, causing
injury to personnel.
Tag air lines for installation.
Scribe fitting directions for installation.
1.
Disconnect right service brake chamber air line (10) from elbow (9).
2.
Disconnect relay valve line (1) from adapter (2).
3.
Disconnect left service brake chamber air line (4) from adapter (3).
4.
Remove screw (6), lockwasher (7), and air manifold tee (8) from mounting bracket (5). Discard
lockwasher (7).
All air manifold tees are replaced basically the same. This
procedure covers the rear primary relay tee. Notice that only
the two primary relay tees use a 45-degree elbow in addition to
a 90-degree elbow.
If new tee is being installed, use fittings from old tee.
Wrap all male pipe threads with antiseize tape before
installation.
1.
Install air manifold tee (8) on mounting bracket (5) with new lockwasher (7) and screw (6).
2.
Connect left service brake chamber air line (4) to adapter (3).
3.
Connect relay valve line (1) to adapter (2).
4.
Connect right service brake chamber air line (10) to elbow (9).
3-520
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