TM 9-2320-260-34-1
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 1. Perform electrical troubleshooting (TM 9-2320-260-20).
END OF TESTING!
3. ENGINE CRANKS BUT WILL NOT START
Step 1. Check for defective fuel pump shutoff valves.
Step 2. Check for broken fuel pump driveshaft.
a. Disconnect tachometer cable from fuel pump, crank engine (TM 9-2320-260-10), and
observe if driveshaft end in pump housing is rotating.
Step 3. Check for correct fuel injector and valve adjustment.
Adjust fuel injectors and valves as necessary (para. 3-82, 3-83, or 3-84).
Step 4. Check for dirty or damaged fuel injectors.
Step 5. Check fuel pump operation.
END OF TESTING!
4. ENGINE STARTS, WON'T RUN
Step 1. Check for low fuel flow.
Correct fuel line damage. Clean plugged or dirty fuel strainer (TM 9-2320-260-20).
END OF TESTING!
5. ENGINE STOPS WHEN THROTTLE IS
RETURNED TO
IDLE POSITION
Step 1. Check if engine governor idle speed is set too low.
Adjust engine governor idle speed to specifications if incorrect (para. 5-25).
END OF TESTING!
6. ENGINE HAS POOR ACCELERATION AND/OR LACK OF
POWER
Step 1. Check if engine maximum governed speed is set too low.
Adjust engine maximum governed speed to specifications if incorrect (para. 5-25).
Step 3. Check engine valve train operation.
Adjust valves to specifications if incorrect (para. 3-82, 3-83, or 3-84).
END OF TESTING!