PUMP ENGINE RUNS ROUGH OR SHUTS DOWN WHILE RUNNING

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PUMP ENGINE GOVERNOR CONTROL DOES NOT OPERATE.

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TM-9-2320-279-10-3 M977 Series 8x8 Heavy Expanded Mobility Tactical Trucks (HEMTT) Manual

PUMP DOES NOT PRIME.

TM 9-2320-279-10-3

Troubleshooting Index (Cont)

Table 3-5.

Troubleshooting

Malfunction

Test or Inspection

Corrective Action

17. PUMP ENGINE RUNS ROUGH OR SHUTS DOWN WHILE

RUNNING.

tfft00418

FUEL GAGE

PUMP ENGINE

AIR CLEANER

INTAKE

PUMP ENGINE

COOLING AIR

VENTS

Step 1. If off, turn cab ENGINE START switch to ON position. Check

cab or pump operators panel fuel level gage for presence of fuel.

If cab or pump operators panel fuel level gage indicates

low fuel level, fill tank.

Step 2. Check pump engine air cleaner intake vent for blockage.

If pump engine air cleaner intake vent is blocked, clear

blockage.

Step 3. Check pump engine cooling air vents for blockage.

If pump engine cooling vents are blocked, clear blockage.

Step 4. If problem still exists, notify Supervisor.