TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 69 of 1207
TM 9-2320-361-20
1-20. ELECTRICAL SYSTEMS OPERATION
Wires with circuit numbers are shown here for reference only and are NOT to be used for troubleshooting
procedures.
The electrical systems include those components that either provide or are powered by electricity. Each of
these components will be described as part of the following subsystems:
a. Battery System Operation (page 1-56).
b. Starting System Operation (page 1-57).
c. Generating System Operation (page 1-58).
d. Heating System Operation (page 1-58).
e. Gage and Warning System Operation (page 1-59).
a. Battery System Operation.
BATTERIES
- Two type 6TN batteries store and supply electrical energy. They provide 24-volts DC
for the starting system and electrical accessories.
SLAVE RECEPTACLE
- Provides a convenient place to plug in an external power source to assist
in cranking the engine. Used when vehicle batteries are not sufficiently charged.
ACCESSORY POWER SWITCH
- Connects or disconnects the batteries from the vehicle electrical
1-56
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