TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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4-96. CONTROL BOX ASSEMBLY REPLACEMENT (M997, M997A1, M997A2) (Cont'd) TM 9-2320-280-20-2 Change 3 4-179 1. Install control box (17) on body (37) with three lockwashers (18) and screws (19). 2. Install NBC harness (13) with grommet (40) up through hole in control box (17). 3. Install two ground terminals (7) from NBC harness (13) on heaters (3) with two capscrews (8) and nuts (6). 4. Install leads 791 and 794 (26) and 793 (29) on control box (17) with two capscrews (28). 5. Install NBC heater mounting plate (16) on body (15) with four washers (1) and capscrews (2). 6. Connect NBC harness leads 784A (5) and 784B (12) to heater leads (4). 7. Install lead (12) on NBC harness (13) with two tiedown straps (14). 8. Install NBC harness (13), power harness (32), and clamp (33) on screw (36) with plain-assembled nut (31). Connect NBC harness lead 791A (35) to light harness lead 791B (38). 9. Install positive cable (27) and NBC cable (34) on power stud (39) with washer (23), lockwasher (24), and nut (25). 10. Install ground cable (20) on ground stud (41) with nut (22). b. Installation