TM-9-2350-274-BD M109 Battlefield Damage Assessment and Repair Download
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TM 9-2350-274-BD ELECTRICAL SYSTEM SECTION II. General Electrical Repairs 6-4. General. Most electrical repairs are general in nature. If a repair procedure is not given, also see TM 9-2350-276- BD for a repair. This section gives some procedures which are specific to the M109/M110/M578 electrical systems. 6-5. CIRCUIT BREAKER FAILURE General Information: The M109/M110/M578 series vehicles have circuit breakers to protect different electrical circuits. The circuit breakers are located behind the driver’s instrument panel. Circuit breakers can also be removed from other damaged vehicles. The affected circuit must be checked for short circuits before bypassing the circuit breakers. Limitation ● No overload protection if bypassed Personnel/Time Required: ● 1 soldier ● 5-10 minutes Materials/Tools: ● Solder ● Insulated wire ● Tape Other Options: ● Use noncritical circuit (bilge pump, auzillary outlet) circuit breaker ● Splice wires together Procedural Steps: 1. Loosen driver’s instrument panel to gain access to the circuit breakers. M110/M578 Master Switch Panel (1) and Instrument Panel (2) Change 1 6-3 ■ ■