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 610 of 991
TM 9-2320-272-24-2
3-448. ENGINE EXHAUST BRAKE MOMDICATION KIT (M939A2) REPLACEMENT (Contd)
18.
19.
20.
Install surge tank support (1) on surge tank mounting bracket (2) with screw (3) and nut (4).
Tighten all exhaust clamps and screws.
21.
22.
Position clamp (33) over hose assembly (31) and slide hose assembly (31) over tube (34) on exhaust
brake assembly (35) and tighten clamp (33).
Install air horn supply tube (30) on governor assembly (32).
Install support bracket (14) on horn support bracket (26) with screw (13), new lockwasher (24), and
nut (25). Do not tighten nut (25).
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
Install tee (42), elbow (37), and connector (36) in valve assembly (20).
Install elbows (39) and (41) in valve assembly (20).
Install bracket (21) on valve assembly (20) with two new lockwashers (39) and screws (40).
Install valve assembly (20) and bracket (21) on support bracket (14) and horn support bracket (26)
with screw (19), new lockwasher (11), and nut (10). Do not tighten nut (10).
Align harness ground wire (15) and valve assembly ground wire (18) with remaining hole on valve
assembly (20) and align bracket (21) with support assembly (14).
Install harness ground wire (15) and valve assembly ground wire (18) on support bracket (14) with
screw (17), new lockwashers (16) and (22), and nut (23).
Tighten nuts (25), (10), and (23).
Install tee (6) in inlet port (8) of horn assembly (9).
Install elbows (5) and (7) in tee (6).
Install horn assembly (9) on support bracket (14) with two screws (12), new lockwashers (28), and
nuts (27).
33.
Install air horn supply tube in elbow (5) on horn assembly (9) and tighten nuts (29).
34.
Install hose assembly (31) in connector (36) on valve assembly (20).
3-1218
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