TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download
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This task covers: a. Removal b. Installation INITIAL SETUP: Applicable Models M998, M998A1, M1038, M1038A1 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Adhesive (Appendix C, Item 7) Two locknuts (Appendix G, Item 78) Two lockwashers (Appendix G, Item 189) Tiedown strap (Appendix G, Item 313) Manual References TM 9-2320-280-10 TM 9-2320-280-24P Equipment Condition Battery ground cable disconnected (para. 4-73). a. Removal b. Installation 1. Disconnect control box lead 400 (7) from harness lead 1C (8). 2. Remove tiedown strap (6) from ground lead 2C (3), ground lead (2), control box lead 400 (7), and heater wiring harness (10). Discard tiedown strap (6). 3. Disconnect cannon plug (11) from inner shell (13). 4. Remove two screws (12) and control box inner shell (13) from outer shell (14), 5. Remove two crown nuts (4), nuts (5), lockwashers (1), capscrews (9), ground lead 2C (3), ground lead (2), and outer shell (14) from angle bracket (15). Discard lockwashers (1). 6. Remove two locknuts (18), washers (17), capscrews (19), and angle bracket (15) from cargo bulkhead (16). Discard locknuts (18). 1. Install angle bracket (15) on cargo bulkhead (16) with two capscrews (19), washers (17), and locknuts (18). 2. Install outer shell (14), ground lead (2), and ground lead 2C (3) to angle bracket (15) with two capscrews (9), lockwashers (1), and nuts (5). 3. Apply adhesive to exposed threads of two capscrews (9) and install two crown nuts (4) on capscrews (9). 4. Install inner shell (13) on outer shell (14) with two screws (12). 5. Connect cannon plug (11) to inner shell (13). 6. Connect control box lead 400 (7) to harness lead 1C (8). 7. Install tiedown strap (6) on ground lead 2C (3), ground lead (2), control box lead 400 (7), and heater wiring harness (10). TM 9-2320-280-20-3 12-144 Change 2 12-100. TROOP/CARGO WINTERIZATION HEATER CONTROL BOX AND ANGLE BRACKET REPLACEMENT