ARMY TM 9-2805-258-14
AIR FORCE TO 38G2-89-21
NAVY NAVFAC P-8-614-14E
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.
S Y M P T O M I N D EX
S y m p t om
P a ge
Engine Misses or Runs Erratically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 -2
Engine Lacks Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...6-2
Engine Runs Excessively Noisy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 -2
Engine Oil Consumption Excessive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 -3
Engine Exhaust Smokey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...6-3
Table 6-1. General Support Troubleshooting Procedures.
Malfunction
Test or Inspection
Corrective Action
1. ENGINE MISSES OR RUNS ERRATICALLY.
Step 1. Inspect piston and piston rings.
Replace a worn or otherwise damaged piston and rings (para. 6-7).
Step 2. Inspect camshaft assembly.
Replace a worn or otherwise damaged camshaft assembly (para. 6-9).
2. E N G I N E L A C K S P O W E R .
Step 1. Inspect piston and connecting rod assembly.
Replace a worn piston and connecting rod assembly (para. 6-7).
Step 2. Inspect cylinder.
Replace a worn cylinder (para. 6-8).
3. ENGINE RUNS EXCESSIVELY NOISY.
Step 1. Inspect piston and connecting rod assembly.
Repair or replace worn or otherwise damaged piston and connecting rod assembly
(para. 6-7).
Step 2. Inspect camshaft, camshaft gear, and bearing.
Replace a worn or otherwise damaged camshaft, camshaft gear, and bearing (para. 6-9).
6 - 2
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