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TM 5-4210-220-34
Table 2-1. DIRECT SUPPORT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3c ENGINE HAS LOW POWER
Step 1.
Check governor
Overhaul governor and check fuel rack setting, (para. 2-19.12).
Step 2.
Check injector spray tips.
Replace bad injectors, (para. 2-19.5).
Step 3.
Check engine timing and valve clearances
a. Retime injectors, (para. 2-19.5).
b. Adjust valve clearance as required (para. 2-19.7).
Step 4.
Check for low cylinder compression
a. Regrind or replace exhaust valves, (para. 2-19.7).
b. Replace leaking cylinder head gasket, (para. 2-19.8).
c. Refer to General Support.
Step 5.
Check throttle linkage.
Repair or replace throttle system, (para. 2-19.12).
3d ENGINE LOW OIL PRESSURE AT WORKING TEMPERATURE
Step 1.
Check if oil intake screen blocked.
Clean or replace oil intake screen, (para. 2-19.10).
Step 2.
Check for damaged oil pressure relief valve.
Replace relief valve, (para. 2-19.10).
Step 3.
Check for damaged oil pressure regulator valve.
Replace regulator valve, (para. 2-19.10).
Step 4
Check for leak in oil pump suction line
Replace/repair oil pump suction line, (para. 2-19.10).
Step 5.
Check for damaged or worn oil pump.
Replace oil pump, (para. 2-19.10).
2-5
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