TM-9-2350-274-BD
M109/M110/M578 VEHICLES HOWITZER, MEDIUM, SELF-PROPELLED FULL-TRACKED
TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1984
TM-9-2350-274-BD - Page 93 of 219
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
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