Unit Mechanical Troubleshooting - continued

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

0010 00

Unit Mechanical Troubleshooting (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

7. ENGINE MISFIRES DURING OPERATION

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

Step 2. Check for air or water in fuel system (malfunction 2, steps 4 and 5).

END OF TESTING!

8. POOR ACCELERATION AND/OR LACK OF POWER

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

Step 2. Check air cleaner system for restrictions.

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

Step 3. Check for restrictions of air to the aftercooler.

If air is restricted, clean or replace defective components (WP 0072 00).

Step 4. Check fuel system for contamination and restrictions (malfunction 2, steps 5 through 7).

Step 5. Check exhaust system for restrictions.

Replace restricted or damaged parts (WP 0066 00).

Step 6. Inspect accelerator pedal for full travel.

Adjust accelerator pedal travel (WP 0063 00).

Step 7. Check vehicle for dragging brakes, low tire inflation, or cargo overload limit.

a. If defects are evident during check, adjust or replace components.

b. Correct overload condition.

Step 8. Check throttle and accelerator cables for binding and sticking.

If cable(s) are binding or sticking, replace throttle or accelerator cable (WP 0062 00 or

Step 9. Check engine idle speed is set within specifications.

If engine idle speed setting is incorrect, adjust (WP 0052 00).

Step 10. Check turbocharger hoses and intake tubes for leaks.

a. Tighten intake tube clamps. Replace any missing clamps.

b. If turbocharger mounting nuts are loose, notify direct support maintenance.

c. If no improvement during test run, turbocharger malfunction is indicated.

Notify direct support maintenance.

NOTE

Lack of power will occur in altitudes above 10,000 ft.

Step 11. Check for too much oil in transmission (TM 9-2320-386-10).

Drain transmission to proper level if necessary (WP 0023 00).

END OF TESTING!

9. ENGINE SURGES

Step 1. Check fuel system for contamination and restrictions (malfunction 2, steps 5 through 7).

Step 2. Inspect accelerator cable for proper operation and adjustment.

If accelerator cable does not operate properly, adjust or replace as necessary (WP 0064 00).

Notify direct support maintenance if condition continues.

END OF TESTING!