TM 5-3805-261-34
ENGINE TROUBLESHOOTING AND MAINTENANCE PROCEDURES.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
r.
TOO MUCH BLACK OR GRAY SMOKE.
Step 3.
Check the turbocharger.
If you suspect a problem with the turbocharger--contact General Support.
s.
TOO MUCH WHITE OR BLUE SMOKE.
Step 1.
Check the fuel injection timing.
If the fuel injection timing is not correct--adjust. Refer to paragraph 3-7.
Step 2.
Check the valve guides.
If the valve guides are worn--the cylinder head should be reconditioned. Contact General Support.
Step 3.
Check the piston rings.
If the piston rings are worn--contact General Support.
Step 4.
Check the turbocharger oil seal.
If the oil seal is damaged or defective, or if you suspect a problem with the turbocharger--contact General
Support.
t.
ENGINE OIL PRESSURE IS LOW.
Step 1.
Check the lubrication in the valve compartment.
If the oil level is not correct--service. Refer to paragraph 3-12.
Step 2.
Check the oil pump suction pipe.
If the oil pump suction pipe is damaged or defective--replace. Refer to paragraph 3-16.
Step 3.
Check the oil pump relief valve.
If the relief valve is not operating correctly--replace. Refer to paragraph 3-16.
3-13
