ARMY TM 9-6115-645-24
AIR FORCE TO 35C2-3-444-12
MARINE CORPS TM 09244A/09245A-24/2
TABLE 3-1. DIRECT SUPPORT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. BLACK OR GRAY SMOKE IN EXHAUST.
Step 1. Test for defective fuel injection nozzles, refer to TM 9-2815-256-24.
a. If fuel injection nozzles are not defective, do Step 2.
.
b. If defective, replace fuel injection nozzles, refer to TM 9-2815-256-24.
Step 2. Test fuel injection pump timing, refer to TM 9-2815-256-24.
.
If timing is not correct, time fuel injection pump in accordance with TM 9-2815-256-24.
6. BLUE OR WHITE EXHAUST SMOKE.
Test fuel injection pump timing, refer to TM 9-2815-256-24.
If timing is not correct, time fuel injection pump in accordance with TM 9-2815-256-24.
7.
LOW OIL PRESSURE.
Step 1. Check for defective regulating valve, refer to TM 9-2815-256-24.
a. If regulating valve is not defective, do Step 2.
b. If defective, replace regulating valve in accordance with TM 9-2815-256-24.
Step 2. Check for defective oil pump, refer to TM 9-2815-256-24.
a. If oil pump is not defective, repair or replace engine.
b. If oil pump is defective replace oil pump in accordance with TM 9-2815-256-24.
8. HIGH OIL PRESSURE.
Test for defective oil filter relief valve, refer to TM 9-2815-256-24.
If defective, replace oil filter relief valve in accordance with TM 9-2815-256-24.
9. COOLANT IN CRANKCASE OR OIL IN COOLANT.
Step 1. Check for cracked cylinder head, refer to TM 9-2815-256-24.
a. If cylinder head is not cracked, do Step 2.
b. If cracked, replace cylinder head or block in accordance with TM 9-2815-256-24.
Step 2. Check for defective cylinder head gasket, refer to TM 9-2815-256-24.
a. If defective, replace cylinder head gasket in accordance with TM 9-2815-256-24.
b. If not defective and problem persists, replace engine. Refer to TM 9-2815-256-24.
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