TM-9-2320-279-34-2

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS DIRECT SUPPORT AND GENERAL SUPPORT, VOLUME 2 OF 3

TM-9-2320-279-34-2 - Page 138 of 632

TM 9-2320-279-34-2

Brake System Maintenance Instructions (Cont)

11-11. TRAILER SUPPLY VALVE REPAIR (CONT).

(lo)

(11)

(12)

(13)

Install upper valve body (4) in vise.

Place lower valve body (13) on upper valve body (4)

and aline matchmarks.

Install spring (19) and piston (17) in lower valve

body (13).

Install end plate (20) and secure with two screws (21)

and lockwashers (22). Tighten screws to 30 to 40 lb-in

(3 to 5 N•m).

d. Follow-on Maintenance.

None.

END OF TASK

11-12. TRAILER BRAKE HAND CONTROL VALVE REPAIR.

This task covers:

a. Disassembly

c. Assembly

b. Cleaning/Inspection

d. Follow-on Maintenance

INITIAL SETUP

Models

All

Test Equipment

None

Special l’bets

None

Supplies

Solvent, dry cleaning, Item 57, Appendix C

Oil, lubricating, Item 46, Appendix C

Personnel Required

MOS 63W, Wheel vehicle repairer

Equipment Condition

TM or Para

Condition Description

Trailer brake pressure

regulator valve on clean

work surface.

Special En vironmental Conditions

Non e

General Safety Instructions

None

Level of Ma intenance

Direct Support

References

None

11-36

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