TM 9-2320-280-20-2
4-100. NBC CONTROL BOX AND WIRING HARNESS REPLACEMENT (M997, M997A1,
M997A2) (Cont’d)
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
4-208
Install grommet (6), retainer (7), harness (9), and intercom cable (8) on body (5) with clamp (24), two
washers (23), capscrews (22), and nut and lockwasher assemblies (4).
Install leads 796B and 796A (27) on NBC heater (29) with washer (1), capscrew (2), washer (1), and
locknut (28).
Connect harness lead 786A (25) to NBC heater lead (26).
Install five clamps (13), harness (9), and intercom cable (8) on body (5) with five screws (12).
Install leads 796 and 796A (16) on NBC heater (18) with washer (15), capscrew (17), washer (15),
and locknut (14).
Connect harness lead 785A (21) on NBC heater lead (20).
Install two clamps (10) on harness (9) and body (5) with three screws (11).
Install tiedown straps (3) and (19) securing heater leads together.
Install clamp (42) and harness (9) on A/C control box (40) and body (47) with lockwasher (41) and
screw (38).
Install two ground terminals (37) on NBC heaters (30) and bracket (48) with capscrews (39) and (49)
and nuts (35) and (46).
Install bracket (48) and NBC heaters (30) on body (47) with four washers (31) and capscrews (32).
Connect leads 784A (36) and 784B (44) on NBC heater leads (34) and (43).
Install two tiedown straps (45) on harness (9) and leads.
