TM 5-3825-225-14&P
4-2. Unit Troubleshooting (Con’t)..
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
ENGINE DOES NOT DEVELOP FULL POWER.
CAUTION
Always prime the fuel system whenever a part of the fuel system has been
disconnected or equipment could be damaged.
Step 1.
Check for moisture in the fuel.
If moisture is present in the fuel, drain the fuel tank, fuel filters, water trap, fuel pump, and fuel
injector pump and refill the fuel system. Prime the system and bleed air from the fuel (see
paragraph 4-42).
Step 2.
Check the air restriction indicator (see Malfunction 2, step 2).
Step 3.
Check exhaust system for obstructions (see Malfunction 2, step 3).
Step 4.
Check the fuel filter elements for obstructions (see Malfunction 2, step 7).
Step 5.
Test the fuel pump (see Malfunction 2, step 8).
4.
EXHAUST IS SMOKY.
Step 1.
Check the air restriction indicator (see Malfunction 2, step 2).
Step 2.
Check exhaust system for obstructions (see Malfunction 2, step 3).
5.
OIL PRESSURE IS LOST.
CAUTION
DO NOT over fill crankcase. The oil level must never be higher than the FULL mark on
the dipstick or damage to the engine may occur.
Step 1.
Check the crankcase oil level. The oil level should be between the FULL and ADD marks on the
dipstick.
Add oil to crankcase as necessary (see Chapter 3, Section I).
Step 2.
Check the oil filter element for clogging.
Replace the oil filter element as necessary. Discard the old element; do not attempt to clean or
reuse it (see paragraph 4-41).
Step 3.
Ensure that the oil pressure gage is functioning correctly.
Replace the oil pressure gage as necessary (see paragraph 4-15).
6.
ENGINE OVERHEATS.
WARNING
Ensure that steam pressure has been relieved before removing the radiator cap.
Personnel could be severely burned by escaping steam.
Step 1.
Check coolant level in radiator.
Add coolant as necessary (see Chapter 3, Section 1).
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