ENGINE OVERHEATS DURING NORMAL OPERATION.

TM 5-2420-224-10

Malfunction

Test or Inspection

Corrective Action

Step 2.

Check for wrong grade of fuel.

Determine grade of fuel with fueling station. If necessary, notify unit

maintenance.

Step 3.

Check coolant temperature gage for too low operating temperature after warmup period.

If temperature is below 176 F (80 C), notify unit maintenance.

ENGINE OVERHEATS DURING NORMAL OPERATION.

Step 1.

Check for low coolant level in reservoir.

WARNING

When engine is hot, remove reservoir cap slowly to relieve pressure. Wear gloves and

protective clothing. Failure to do so could result in personal injury.

Add coolant as required. Tighten any connections that may be subject to

leaks.

Step 2.

Check for debris blocking air flow through radiator.

CAUTION

Do not use screwdriver or any other sharp instrument to remove debris from radiator.

To do so could result in equipment damage.

Remove debris from grille and radiator. If radiator cooling fins are

plugged, notify unit maintenance.

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