TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download
Page 660 of 1170
12-42. ARCTIC HEATER CONTROL BOX ASSEMBLY REPLACEMENT This task covers: a. Removal b. Installation a. Removal INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Locknut (Appendix G, Item 70) Lockwasher (Appendix G, Items 175) Two lockwashers (Appendix G, Item 178) Personnel Required One mechanic One assistant Manual References TM 9-2320-280-24P Equipment Condition Battery ground cable disconnected (para. 4-73). TM 9-2320-280-20-3 Change 2 12-61 1. Remove nut (6), washer (7), capscrew (11), and washer (7) and disconnect ground lead 416A (9) from fuel pump bracket (10). NOTE Perform step 2 for vehicles not equipped with troop/cargo winterization kit. Perform step 3 for vehicles equipped with troop/cargo winterization kit. 2. Disconnect lead 402 (4) from fuel pump lead 402A (5). 3. Disconnect lead 402 (26) from fuel pump jumper lead (25). 4. Remove nut (19), lockwasher (18), and washer (17) and disconnect leads 6B (20), 6C (21), and 400 (22) from power stud (8). Discard lockwasher (18). 5. Remove nut (12) and lockwasher (13), and disconnect leads 416 (15) and 416A (14) from shunt (16). Discard lockwasher (13). 6. Remove locknut (23), capscrew (1), and clamp (2) from heater control box cable (3) and tunnel (24). Discard locknut (23).