TM 5-3805-261-34
ENGINE TROUBLESHOOTING AND MAINTENANCE PROCEDURES. (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
p.
LITTLE VALVE CLEARANCE.
Check the valve seat and face of valve.
If the valve seat or face of valve is worn--the cylinder head should be reconditioned. Contact General
Support.
q.
COOLANT IN THE LUBRICATION OIL.
Step 1.
Check the oil cooler core.
If the core is damaged or defective--replace. Refer to paragraph 3-17.
Step 2.
Check the cylinder head gasket.
If the cylinder head gasket is damaged or defective--replace. Refer to paragraph 3-9.
Step 3.
Check the cylinder head.
If the cylinder head is cracked or defective--replace. Refer to paragraph 3-9.
Step 4.
Check the cylinder block.
If the cylinder block is damaged or defective--contact General Support.
Step 5.
Check the seals of the cylinder lines.
If you suspect a problem with the seals--contact General Support.
r.
TOO MUCH BLACK OR GRAY SMOKE.
Step 1.
Check the fuel injection nozzles. Refer to Test procedure, paragraph 3-24.
If a fuel injection nozzle is bad--replace. Refer to paragraph 3-24.
Step 2.
Check the fuel injection timing.
If the fuel injection timing is not correct--adjust. Refer to paragraph 3-24.
3-12
