ARMY TM 9-2805-258-14
AIR FORCE TO 38G2-89-21
NAVY NAVFAC P-8-614-14E
5-4. General. This section contains troubleshooting procedures to determine the probable cause of observed
equipment malfunctions. Test or inspections are provided to isolate the faulty component and corrective actions
are provided to eliminate the malfunction.
5-5. Direct Support Troubleshooting Procedures. Table 5-1 lists the common malfunctions that may
be found during operation. Refer to symptom index to locate the troubleshooting procedures for the malfunction.
This manual cannot list all malfunctions that may occur, nor all test or inspections and corrective actions. If a
malfunction is not corrected by listed corrective actions, notify your supervisor.
S Y M P T O M I N D E X
S y m p t o m
P a ge
Engine Fails to Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-2
Engine Misses or Runs Erratically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-2
Engine Lacks Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-3
Engine Oil Consumption Excessive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-3
Engine Runs Excessively Noisy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-3
Engine Exhaust Smokey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-3
Table 5-1. Direct Support Troubleshooting Procedures.
Malfunction
Test or Inspection
Corrective Action
1. ENGINE FAILS TO START.
Step 1. Inspect valve tappets.
Replace worn or otherwise damaged valve tappets (para. 5-20).
Step 2. Inspect cylinder head.
Repair or replace a damaged cylinder head (para. 5-17).
2. ENGINE MISSES OR RUNS ERRATICALLY.
Step 1. Inspect cylinder head.
Repair or replace a damaged cylinder head (para. 5-17).
Step 2. Inspect valve tappets.
Replace worn or otherwise damaged valve tappets (para. 5-20).
5 -2
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