TM-9-2320-272-24-2

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4

JUNE 1998

TM-9-2320-272-24-2 - Page 602 of 991

TM 9-2320-272-24-2

3-448. ENGINE EXHAUST BRAKE MODIFICATION KIT (M939A2) REPLACEMENT (Contd)

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

Remove hose (5) from connector (8).

Loosen two nuts (2) and remove air horn supply tube (3) from elbow (1) and tee (4).

Remove two nuts (24), lockwashers (25), screws (9), and horn assembly (10) from support

brackets (12). Discard lockwashers (25).

Remove elbows (1) and (29) and tee (28) from horn assembly (10).

Remove nut (20), lockwasher (19), screw (15), lockwasher (16), valve assembly ground wire (14), and

harness ground wire (13) from bracket (18) and support bracket (12). Discard lockwashers (19)

and (16).

Remove nut (26), lockwasher (27), screw (17), and bracket (18) from support bracket (12) and horn

support bracket (21). Discard lockwasher (27).

Remove two screws (35), lockwashers (34), and bracket (18) from valve assembly (32). Discard

lockwashers (34).

Remove elbows (33) and (36) from valve assembly (32).

Remove connector (8), elbow (31), and tee (30) from valve assembly (32).

Remove nut (22), lockwasher (23), screw (11), and support bracket (12) from horn support

bracket (21). Discard lockwasher (23).

Loosen clamp (6) and remove hose (5) from tube (7).

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