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 962 of 1015
3-210. TRAILER
TM 9-2320-272-24-1
THIS TASK COVERS:
a. Removal
b. Installation
APPLICABLE MODELS
REFERENCES (TM)
M931/A1/A2, M932/A1/A2
TM 9-2320-272-10
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
MATERIALS/PARTS
Antiseize tape (Appendix D, Item 72)
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.
NOTE
The airbrake hand control valve is mounted on the upper
steering column opposite the turn signal control.
Tag air lines for installation.
1.
Disconnect vent line (10) from adapter fitting (9).
2.
Disconnect delivery line (11) from adapter fitting (12).
3.
Disconnect line (8) from adapter fitting (7).
4.
Remove two screws (4), washers (3), tab (2), clamp (5), and control valve (1) from upper steering
column (6).
5.
Remove three adapter fittings (7), (9), and (12) from control valve (1).
NOTE
If new valve is being installed, use fittings from old valve.
Wrap all male pipe threads with antiseize tape before
installation.
1.
Install three adapter fittings (7), (9), and (12) on control valve (1).
2.
Install control valve (1) on upper steering column (6) with clamp (5), tab (2), two washers (3), and
screws (4).
3.
Connect line (8) to adapter fitting (7).
4.
Connect delivery line (11) to adapter fitting (12).
5.
Connect vent line (10) to adapter fitting (9).
3-598
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