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TM 10-3930-659-34
Table 3-1. Troubleshooting (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE DOES NOT DEVELOP FULL POWER OR ACCELERATION IS SLOW.
Step 1. Inspect turbocharger for wear and damage by spinning turbocharger turbine wheel and listening
for noisy bearings or turbine wheel rubbing in center housing.
Replace damaged turbocharger (see paragraph 4-25).
WARNING
Diesel fuel Is combustible. DO NOT smoke or allow open flame near fuel tank. Failure to follow
this warning will result in death or serious Injury to personnel. If you are burned, immediately
seek medical aid.
Step 2. Remove and test fuel injection nozzles (see paragraph 4-23).
Replace damaged fuel injection nozzles (see paragraph 4-23).
Step 3. Test fuel injection pump (see STE/ICE Test No. NG31).
Replace damaged fuel injection pump (see paragraph 4-24).
Step 4. Check cylinder head valve for proper lift (see paragraph 4-2).
Replace damaged pushrods (see paragraph 4-12).
Replace damaged camshaft (see paragraph 5-5),
Step 5. Perform engine assembly compression test (see paragraph 4-1).
Replace damaged cylinder head gasket (see paragraph 4-5).
Replace damaged compression ring, oil control ring, and oil ring expander (see
paragraph 5-3).
4. ENGINE EMITS EXCESSIVE BLACK OR GRAY EXHAUST SMOKE.
Step 1. Inspect turbocharger for wear and damage by spinning turbocharger turbine wheel and listening
for noisy bearings or turbine wheel rubbing in center housing.
Replace damaged turbocharger (see paragraph 4-25).
WARNING
Diesel fuel is combustible. DO NOT smoke or allow open flame near fuel tank. Failure to follow
this warning will result in death or serious injury to personnel. If you are burned, immediately
seek medical aid.
Step 2. Remove and test fuel injection nozzles (see paragraph 4-23).
Replace damaged fuel injection nozzles (see paragraph 4-23).
3-5
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