TM 55-1930-209-14&P-21
Table 3-2. Operator/Crew Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Engine Lacks Power
Step 1. Check for clogged fuel filter.
Service the fuel filters (Para 3-8).
Step 2. Check for clogged air cleaner.
Service the air cleaner (Para 3-7).
Step 3. Check for air in fuel system.
Bleed the fuel system.
Step 4. Other causes.
Notify higher maintenance.
4. Engine Knocks, Develops Excessive Noise or Vibration
Step 1. Check for low oil level in crankcase.
Refer to lubrication chart (Fig. 3-1) and service engine crankcase.
Step 2. Check for improper fuel grade.
Drain fuel tank and fill with proper fuel.
Step 3. Other causes.
Notify higher maintenance.
5. Engine Stops Suddenly
Step 1. Check for empty fuel tank.
Fill fuel tank with proper fuel.
Step 2. Check for clogged fuel filter.
Service fuel filters (Para 3-8).
Step 3. Check for water in fuel.
Drain fuel tank and fill with clean fuel. Service the fuel filter (Para 3-8).
Step 4. Check for overheated engine.
Inspect coolant level and add coolant as necessary. Inspect radiator and grill for obstructions.
Step 5. Check for low oil pressure.
Refer to lubrication chart (Fig. 3-1), and service engine crankcase.
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