TM 9-2320-272-24-1
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WARNING
Ether is extremely flammable. Do not perform ether start
l
system testing procedures near fire. Injury to personnel may
result.
l Eyeshields must be worn when cleaning with compressed air.
Compressed air source will not exceed 30 psi (207 kPa). Failure
to do so may result in injury to personnel.
Step 10. Check ether start system.
Perform malfunction 16.
END OF TESTING!
3. STARTER CRANKS ENGlNE SLOWLY, HARD TO START
Step 1. Press accelerator pedal all the way to floor and hold, then restart engine.
Step 2. In cold weather, ensure proper engine oil is being used.
Add or replace oil (LO 9-2320-272-12).
NOTE
If STE/ICE is available, perform NG80-Starter Circuit Tests
Step 3. Check starting system (Electrical Troubleshooting, para. 2-22).
END OF TESTING!
4. ENGlNE STOPS DURlNG NORMAL OPERATION
Step 1. Perform malfunction 2, steps 2, 8, and 9.
Step 2. Check for restrictions in exhaust system.
Ensure exhaust system is not bent, restricted, or damaged.
Replace exhaust system component(s) if bent, restricted, or damaged (paras. 3-48, 3-49,
3-50, or 3-51).
END OF TESTING!
5. ENGlNE STOPS WHEN ACCELERATOR IS RETURNED TO IDLE POSlTlON
Step 1. Check accelerator linkage adjustment.
If necessary, adjust accelerator linkage (para. 3-42 or 3-43).
Step 2. Check if engine idle is too low.
If idle speed is below 600 rpm, notify DS maintenance.
END OF TESTING!
6. ENGlNE FAILS TO STOP
Step 1. Inspect emergency stop control cable for damage and proper adjustment.
Adjust or replace emergency stop control cable (para. 3-44).
NOTE
Perform step 2 for M939A2 series vehicles.
Step 2. Check for proper operation of throttle control solenoid and linkage.
Replace throttle control solenoid or linkage if not operating properly (para. 3-46).
END OF TESTING!
2-66
