TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 208 of 1313
STARTING AND ETHER STARTING SYSTEM OPERATION - Continued
A. PROTECTIVE CONTROL BOX
- Prevents reengagement of starter motor once engine is running.
B. BATTERIES
- Provide 24-volt electrical current for energizing electrical circuits.
C. STARTER SOLENOID
- Relays 24-volt battery power to energize starter motor.
D. STARTER MOTOR
- When energized, converts electrical energy to mechanical power as it engages
flywheel to crank engine.
E. ETHER START CYLINDER
- Stores ether used for cold-weather starting.
A
B
C
D
E
G0014DAA
Figure 2.
Starting and Ether Starting Components.
TM 9-2320-272-23-1
0003
0003-3
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