ARMY TM 9-6115-464-12
AIR FORCE TO 35C2-3-445-1
NAVY NAVFAC P-8-624-12
Section V. UNIT TROUBLESHOOTING
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INTRODUCTION.
This section contains troubleshooting information for locating and correcting operating troubles which may develop
in the generator set. Each malfunction for an individual component unit, or system is followed by a list of tests or
inspections which will help you to determine probable causes and corrective actions to take. You should perform
the tests/inspections and corrective actions in the order listed.
This table cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a malfunc-
tion is not listed or cannot be corrected by listed corrective actions, notify your supervisor.
NOTE
Air Force and Navy users may perform maintenance within the scope of their abilities.
Table 4-2. Unit Troubleshooting
NOTE
Before you use this table, make sure you have performed your PMCS.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE FAILS TO CRANK.
Step 1. Discharges batteries.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
Charge or replace batteries (para 4-14).
NOTE
Use slave receptacle (SR1) when extra cranking power is required.
Improperly installed batteries.
Install batteries correctly (para 3-4).
Defective dc circuit breaker.
Replace dc circuit breaker (para 4-66).
Defective START-RUN-STOP switch.
Replace START-RUN-STOP switch (para 4-63).
Loose electrical connection or break in starting circuit.
Check starting circuit wiring. Replace any damaged wires. Tighten loose connections.
Worn starter brushes.
Replace starter brushes (para 4-16).
Defective starter solenoid.
Replace starter solenoid (para 4-16).
Defective starter motor.
Replace starter motor (para 4-16).
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