TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 164 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-10.

TROUBLESHOOTING SYMPTOM INDEX.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

5.

INTERMITTENT LOSS OF POWER.

Step 3

Check for dirt and water in fuel.

Replace water separator fuel filter, and clean fuel filter

screen (para 3-27 and 3-37).

6.

SUDDEN LOSS OF POWER.

Step 1

Check fuel level in tank.

Add fuel, if necessary (Refer to TM 9-2320-283-10).

Step 2

Check fuel tank vent plug for blockage.

Remove and clean fuel tank vent plug (para 3-34).

Step 3

Refer to malfunction 2, steps 1 thru 7.

7.

GRADUAL LOSS OF POWER.

Step 1

Check for leaking fuel lines.

Tighten connections, or replace fuel lines (para 3-28 or 3-36).

Step 2

Check for air intake restriction.

Remove blockage from air intake.

Step 3

Check for loose accelerator linkage.

Adjust and replace parts (para 3-41).

Step 4

Check fuel specifications for cold weather operation.

(Refer to TM 9-2320-283-10).

Replace fuel, if necessary.

2-39