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 140 of 632

TM 9-2320-279-34-2

Brake System Maintenance Instructions (Cent)

11-12. TRAILER BRAKE HAND CONTROL VALVE REPAIR (M983) (CONT).

(7) Scribe matchmarks on outlet housing (15) and inlet

housing (16). Remove six screws (17).

(8) Separate outlet housing (15) from inlet housing (16) and

remove preformed packing (18).

(9) Remove exhaust breather (19).

(lo)

Remove plug (20)

(11,

(12)

(13)

(14)

(15)

(16)

(17)

(18)

Tap outlet housing (15) to jar loose

balance piston (21 ). Remove balance

piston and spring (22) from outlet

housing.

Remove U-cup (23), thrust ring (24), and

two spacers (25) from balance

piston (21 ).

Remove cartridge assembly (26) from inlet

housing (16).

Remove preformed packing (27).

Scribe matchmarks on inlet housing (16),

mounting plate (28), and cam

housing (4). Remove four screws (29)

and sealing washers (30) to separate

inlet housing, mounting plate, and cam

housing.

Remove brass fitting (31).

Grasp tip of cam follower (32) and pull

out of cam housing (4).

Push out roller pin (33) and remove

roller (34).

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