TM-9-2320-361-24-2 Field Maintenance Manual Volume 2 for M44A2 Series Trucks
Page 668 of 1144
TM 9-2320-361-24-2 0381 00 0381 00-2 PRIMARY AND SECONDARY HEATER SWITCHES REPLACEMENT (Contd) NOTE Primary and secondary heater switches replacement procedures are the same. REMOVAL NOTE Prior to removal, tag all lead wires for installation. 1. Loosen six screws (6) and remove converter (5) from screws (6) and van wall (7). 2. Remove fourteen screws (14) and cover (15) from converter (5). 3. Remove two screws (18), washers (17), and wires (3) and (19) from HI/LOW switch (16). 4. Remove four screws (10), washers (9), and wires (4), (11), (3), and (12) from START/OFF/RUN switch (13). 5. Remove jumper (8) from START/OFF/RUN switch (13). 6. Remove two screws (1), mounting plate (2), and START/OFF/RUN switch (13) from cover (15). 7. Remove two screws (1), mounting plate (2), and HI/LOW switch (16) from cover (15). INSTALLATION 1. Install HI/LOW switch (16) and mounting plate (2) on cover (15) with two screws (1). 2. Install START/OFF/RUN switch (13) and mounting plate (2) on cover (15) with two screws (1). 3. Install jumper (8) on START/OFF/RUN switch (13). 4. Install wires (4), (11), (3), and (12) on START/OFF/RUN switch (13) with four washers (9) and screws (10). 5. Install wires (3) and (19) on HI/LOW switch (16) with two washers (17) and screws (18). 6. Install cover (15) on converter (5) with fourteen screws (14). 7. Install converter (5) on van wall (7) with six screws (6). Tighten screws (6). 8. Connect battery ground cable (WP 0126 00). 9. Release parking brake and remove wheel chocks (TM 9-2320-361-10).