TM-9-2320-361-24-2 Field Maintenance Manual Volume 2 for M44A2 Series Trucks
Page 460 of 1144
TM 9-2320-361-24-2 0316 00 0316 00-2 BLACKOUT MASTER SWITCH REPLACEMENT (M109A3) (Contd) REMOVAL 1. Remove four screws (3), lockwashers (4), and cover (1) from blackout master switch (2). Discard lockwashers (4). NOTE Prior to removal, tag lead wires and terminals for installation. 2. Remove five screws (8), lockwashers (7), and wires (5), (6), (9), (10), (11), (12), and (13) from blackout master switch (2). Discard lockwashers (7). 3. Remove bushing (16) from nipple (15). 4. Remove two nuts (17), lockwashers (18), and blackout master switch (2) from mounting bracket (14). Discard lockwashers (18). INSTALLATION 1. Install blackout master switch (2) on mounting bracket (14) with two new lockwashers (18) and nuts (17). 2. Install blackout master switch (2) on nipple (15) with bushing (16). 3. Install wires (5), (6), (9), (10), (11), and one end of (12) on blackout master switch (2) with four lockwashers (7) and screws (8). 4. Install wire (13) and other end of wire (12) on blackout master switch (2) with new lockwasher (7) and screw (8). 5. Install cover (1) on blackout master switch (2) with four new lockwashers (4) and screws (3). 6. Connect battery ground cable (WP 0126 00). 7. Check blackout light operations (TM 9-2320-361-10). 8. Release parking brake and remove wheel chocks (TM 9-2320-361-10).