ARMY TM 9-6115-464-12AIR FORCE TO 35C2-3-445-1NAVY NAVFAC P-8-624-12Section V. UNIT TROUBLESHOOTING4-8INTRODUCTION.This section contains troubleshooting information for locating and correcting operating troubles which may developin the generator set. Each malfunction for an individual component unit, or system is followed by a list of tests orinspections which will help you to determine probable causes and corrective actions to take. You should performthe 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.NOTEAir Force and Navy users may perform maintenance within the scope of their abilities.Table 4-2. Unit TroubleshootingNOTEBefore you use this table, make sure you have performed your PMCS.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1. 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).NOTEUse 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).4-8
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