ARMY TM 9-2805-262-14
AIR FORCE TO 38G2-90-1
NAVY NAVFAC P-8-613-14E
6-5. General Support Troubleshooting Procedures. Table 3-1 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
Engine Oil Consumption Excessive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...6-2
Table 6-1. General Support Troubleshooting Procedures.
Malfunction
Test or Inspection
Corrective Action
1. ENGINE RUNS EXCESSIVELY NOISY.
Step 1. Camshaft gear worn.
Replace a worn or otherwise damaged camshaft gear (para. 6-12).
Step 2. Camshaft worn.
Replace a worn or otherwise damaged camshaft (para. 6-12).
Step 3. Crankshaft worn.
Replace a worn or otherwise damaged crankshaft (para. 6-13).
Step 4. Crankshaft bearing worn.
Replace a worn or otherwise damaged crankshaft rear bearing (para. 6-15).
Step 5. End cover crankshaft bearing worn.
Replace a worn or otherwise damaged end cover crankshaft bearing
(para. 6-10).
2. ENGINE OIL CONSUMPTION EXCESSIVE
Step 1. Check crankcase oil seal for wear.
Replace a worn or leaking crankcase oil seal (para. 6-16).
Step 2. Check end cover oil seal.
Replace a worn or leaking end cover oil seal (para. 6-11).
6-2
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