TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 659 of 1207
TM 9-2320-361-20
8-36. TRAILER PROTECTION VALVE REPLACEMENT
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
M275A2
MATERIALS/PARTS
Two locknuts
Antiseize tape (Appendix C, Item 27)
REFERENCES [TM]
TM 9-2320-361-10
TM 9-2320-361-20P
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-361-10).
Air reservoirs drained (TM 9-2320-361-10).
GENERAL SAFETY INSTRUCTIONS
Do not disconnect air lines before draining air
reservoirs.
a. Removal
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
Tag air lines and hoses for installation.
1. Remove service trailer brake line (1) from elbow (2).
2. Remove emergency trailer brake line (6) from elbow (3).
3. Remove brake signal air line (11) from elbow (10).
4. Remove air reservoir air line (8) from elbow (9).
5. Remove two locknuts (4), screws (12), and trailer protection valve (7) from bracket (5). Discard
locknuts (4).
6. Remove four elbows (2), (3), (9), and (10) from trailer protection valve (7).
NOTE
Wrap all male pipe threads with antiseize tape before installation.
1. Install four elbows (10), (9), (3), and (2) on trailer protection valve (7).
2. Install trailer protection valve (7) on bracket (5) with two screws (12) and new locknuts (4).
3. Install air reservoir air line (8) on elbow (9).
4. install brake signal air line (11) on elbow (10).
5. Install emergency trailer brake line (6) on elbow (3).
6. Install service trailer brake line (1) on elbow (2).
8-86
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