ARMY TM 9-2805-257-14
AIR FORCE TO 38G2-103-2
NAVY NAVFAC P-8-612-14E
6-5. General Support Troubleshooting Procedures. Table 6-1 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 tests or inspections and corrective
actions. If a malfunction is not corrected by listed corrective actions, notify your supervisor.
SYMPTOM INDEX
Symptom
Page
Engine Runs Excessively Noisy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...6-2
Table 6-1. General Support Troubleshooting Procedures.
Malfunction
Test or Inspection
Corrective Action
ENGINE RUNS EXCESSIVELY NOISY.
Step 1. Check crankshaft end play.
Adjust crankshaft end play if needed (para. 6-7).
Step 2. Check bearing cap assembly bearing cup and bearing for excessive wear or damage.
Replace worn or otherwise damaged bearing cup and bearing (para. 6-7).
Step 3. Check crankcase bearing cup and bearing for excessive wear or damage.
Replace a worn or otherwise damaged crankcase bearing cup and bearing (para. 6-10).
Step 4. Check camshaft and gear for excessive wear.
Replace a worn or otherwise damaged camshaft (para. 6-9).
Step 5. Check crankshaft wear.
Replace a worn or otherwise damaged crankshaft (para. 6-8).
6-2
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