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 120 of 632

TM 9-2320-279-34-2

Brake System Maintenance Instructions (Cont)

11-7. PARKING BRAKE VALVE REPAIR (CONT).

a. Disassembly.

(1)

Mount valve body (1) in vise with soft jaws.

(2) Remove two screws (2) and end cap (3).

(3) Remove seal (4).

(4) Remove locknut (5), washer (6), and poppet (7).

(5) Remove stem (8) and preformed packing (9).

b. Cleankg/inspection.

WARNING

Adhesives, solvents, and sealing compounds can burn easily, can give off harmful

vapors, and are harmful to skin and clothing. To avoid injury or death, keep away

from open fire and use in well-ventilated area. If adhesive, solvent, or sealing

compound gets on skin or clothing, wash immediately with soap and water.

(1) Clean all metal parts in dry cleaning solvent.

(2) Inspect end cap and valve body for damage.

(3) Replace damaged parts.

c. Assembly.

(1) Mount valve body (1) in vise with soft jaws.

(2) Coat preformed packing (9) with lubricating oil and install on stem (8).

(3) Insert stem (8) in valve body (1) and install poppet (7), washer (6), and locknut (5).

(4) Coat seal (4) with lubricating oil and install in valve body (l).

(5) Install end cap (3) and two screws (2).

d. Follow-on Maintenance.

None.

END OF TASK

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