TM 9-2320-280-20-2
4-99. NBC CONTROL BOX AND WIRING HARNESS REPLACEMENT (M996, M996A1) Cont’d)
20. Remove two tiedown straps (11) from leads (12) and (13) and harness (8). Discard tiedown straps (11).
21. Disconnect leads 787A (12) and 786B (13) from NBC heaters (10).
22. Remove screw (15), clamp (14), and harness (8) from body (9).
23. Remove two screws (5) and cover (6) from bracket (16).
24. Pull cover (6) away from switch (1) to allow access to leads.
25. Remove two screws (3) and leads (2) and (4) from switch (1).
26. Pull leads (2) and (4) through grommet (7) in cover (6).
CAUTION
Use care when removing harness. Failure to do so will cause
damage to harness.
27. Remove harness (8) from vehicle.
b. Installation
CAUTION
Use care when routing harness. Failure to do so will cause
damage to harness.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
4-198
Route leads (2) and (4) through grommet (7) in cover (6).
Route harness (8) in approximate mounting location.
Connect leads (2) and (4) to switch (1) with two screws (3).
Install cover (6) to bracket (16) with two screws (5).
Install clamp (14) and harness (8) on body (25) with screw (15).
Connect leads 787A (12) and 786B (13) to NBC heaters (10).
Install two tiedown straps (11) on leads (12) and (13) and harness (8).
Install grommet (22) on harness (8) in body (25).
Install clamp (20) and harness (8) on body (25) with washer (19), capscrew (18), washer (19), and
nut (21).
Install leads 795B (17) and 795C (32) on body (25) with two washers (31), capscrews (33), washers (31),
and nuts (30).
Install three clamps (24) on harness (8) to body (25) with three screws (23).
Install ground (27) on NBC heater and filter assembly (26) with screw (29).
Connect harness (28) to NBC heater and filter assembly (26).
