TM-9-2320-279-20-2

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

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 2 OF 3

TM-9-2320-279-20-2 - Page 132 of 938

TM 9-2320-279-20-2

Brake and Air System Maintenance Instructions (Cont)

11-12.

BRAKE RELAY VALVES REMOVAL/INSTALLATION (CONT).

NOTE

Some vehicles have two nuts, lockwashers,

and screws. Others have two flanged nuts

and screws.

(6)

Install brake relay valve (10) with two

screws (12), lockwashers (13), and

nuts (14).

(7)

Connect four air lines (15) to elbows (9).

(8)

Connect air supply line (16) to

elbow (11).

(9)

Connect two control lines (17) to double

check valve (1).

g.

Left Rear Brake Relay Valve

Removal (M978).

NOTE

Tag and mark air lines and

elbows before removal.

(1)

Disconnect four air lines (1)

from brake relay valve (2).

(2)

Disconnect air supply

line (3) from elbow (4).

(3)

Disconnect air line (5)

from elbow (6).

11-48

Change 2