TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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b. Installation TM 9-2350-311-20-1 Ensure MASTER switch is OFF when working on hull electrical systems to avoid electrical shock and burns. NOTE Wiring of circuit breakers differs between M109A2/M109A3 Howitzers. 1 Install circuit breaker (6), two flat washers (8), two new Iockwashers (9), two screws (7), and two nuts (10). 2 Connect 14 electrical leads (1) at circuit breaker (6). 3 Install circuit breaker panel (5). 4 Install two new Iockwashers (4), two flat washers (3), and two screws (2). NOTE FOLLOW-ON MAINTENANCE: Install driver’s and portable instrument panels (para 8-17) 8-87 WARNING