TM-5-3805-254-34
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
MARCH 1993
TM-5-3805-254-34 - Page 23 of 727
TM 5-3805-254-34
Table 2-1.
Troubleshooting (Con’t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Inspect fuel pump for scored or worn gears (see TM 5-2815-241-34&P).
Repair fuel pump (see TM 5-2815-241-34&P).
Step 4.
Check fuel pump injector timing (see TM 5-2815-241-34&P).
Adjust fuel pump injector timing (see TM 5-2815-241-34&P).
Step 5.
Inspect for broken piston rings and damaged pistons (see TM 5-2815-241-34&P).
Replace engine (see paragraph 3-1).
Step 6.
Inspect for out-of-round, scored, and damaged cylinder liners (see TM 5-2815-241-34&P).
Replace engine (see paragraph 3-1).
3.
ENGINE OIL IN COOLANT OR COOLANT IN ENGINE OIL.
Step 1.
Inspect for leaking cylinder head gasket (see TM 52815-241-34&P).
Replace cylinder head gasket (see TM 5-2815-241-34&P).
Step 2.
Inspect for cracked cylinder block.
Replace engine (see paragraph 3-1).
4.
LOW ENGINE POWER.
Step 1.
Inspect for leaking cylinder head gasket (see TM 5-2815-241-34&P).
Replace cylinder head gasket (see TM 5-2815-241-34&P).
Step 2.
Inspect valves for wear and damage (see TM 5-2815-241-34&P).
Repair or replace valves (see TM 5-2815-241-34&P).
Step 3.
Check fuel pump injector timing (see TM 5-2815-241-34&P).
Adjust fuel pump injector timing (see TM 5-2815-241-34&P).
Step 4.
Inspect for broken and worn piston rings (see TM 5-2815-241-34&P).
Replace engine (see paragraph 3-1).
5.
ENGINE STOPS AND WILL NOT START.
Step 1.
Inspect for broken fuel pump shaft (see TM 5-2815-241-34&P).
Repair fuel pump (see TM 5-2815-241-34&P).
Step 2.
Inspect fuel pump for scored or worn gears (see TM 5-2815-241-34&P).
’
Repair fuel pump (see TM 5-2815-241-34&P).
2-4
Back to Top
