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 166 of 926

TM 9-2320-283-20-1

TROUBLESHOOTING.

2-10.

TROUBLESHOOTING SYMPTOM INDEX.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

9

EXCESSIVE EXHAUST SMOKE DURING ACCELERATION (Continued).

Step 3

Check for white exhaust smoke (normal in cold weather)

If

exhaust is white, check radiator coolant for signs of oil.

Notify direct support maintenance.

10 EXCESSIVE EXHAUST SMOKE THROUGHOUT SPEED RANGE.

Step 1

If exhaust smoke is black, check fuel specification for correct

fuel type.

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

Step 2

Refer to malfunction 9, steps 1 thru 3.

11 ENGINE STOPS.

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.

Step 4

Notify direct support maintenance.

12 HIGH OIL USE.

Step 1

Check for overfilling.

a

Check oil level.

b

Make sure proper oil level gage (dipstick) is being used by matching it against

known correct configuration.

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