Unit Mechanical Troubleshooting - continued

TM 9-2320-386-24-1-1

0010 00

Unit Mechanical Troubleshooting (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 8. Check fuel transfer pump operation. (Notify direct support maintenance.)

END OF TESTING!

3. STARTER CRANKS ENGINE SLOWLY

Step 1. Check starting system (Electrical Troubleshooting, WP 0011 00).

Step 2. In cold weather, ensure proper engine oil is being used and/or replace oil (WP 0023 00).

Step 3. Check belt-driven engine accessories (malfunction 1, step 3).

Step 4. Engine cranks, but fails to start at outside temperatures below -0F (18C). Use cold-start

procedures (TM 9-2320-386-10).

END OF TESTING!

4. ENGINE STOPS DURING NORMAL OPERATION

Step 1. Check air cleaner indicator for restrictions (malfunction 2, step 3).

Step 2. Check fuel system for contamination and restrictions (malfunction 2, steps 5 through 7).

Step 3. Check for restrictions in exhaust system. Ensure exhaust system is not bent, restricted, or

damaged.

If exhaust system is bent, restricted, or damaged, replace damaged parts (WP 0065 00).

Step 4. Check fuel level in fuel tank.

If empty, add fuel (TM 9-2320-386-10).

Step 5. Check air cleaner system for major restrictions.

If air cleaner system is restricted, clean or replace defective components (WP 0036 00).

Step 6. Check for restrictions in air tubes of charged air cooler.

If air is restricted, clean or replace defective components (WP 0073 00).

Step 7. Check engine idle speed.

If engine idle speed is below specifications, adjust (WP 0052 00).

END OF TESTING!

5. ENGINE STOPS WHEN ACCELERATOR IS RETURNED TO IDLE POSITION

Perform malfunction 4, steps 5, 6, and 7.

END OF TESTING!

6. ENGINE FAILS TO STOP

NOTE

Engine failing to stop when fuel shutoff switch is pressed may indicate a

defective fuel shutoff solenoid, or leaking or excessive fuel at injectors.

Step 1. Stop engine (TM 9-2320-386-10).

NOTE

Assistant will help with step 2.

Step 2. Direct assistant to turn accessory/battery switch on and listen for fuel solenoid to click.

If fuel solenoid plunger is not heard cycling, perform malfunction 4, Electrical

Troubleshooting (WP 0011 00).

Step 3. Perform malfunction 13, step 3.

END OF TESTING!