TM 5-2420-230-24-1
Table 3-6. Unit Troubleshooting Table. -- Continued
Malfunction
Test or Inspection
Corrective Action
ENGINE OVERHEATS. -- CONTINUED
Step 4.
Check thermostat (4) to ensure it is functioning correctly (Para L-11).
If thermostat (4) is missing or not functioning correctly, replace thermostat (Para L-11).
Step 5.
With engine stopped, check hydraulic fan motor (5) to ensure it is functioning properly by rotating fan
blade. Blades should move freely.
If hydraulic fan motor (5) is not operating or blades do not move freely, perform hydraulic pressure
test (Para 10-6).
If hydraulic oil pressure is low, notify Direct Support maintenance.
If oil pressure is in correct range, replace hydraulic fan motor (5) (Para 9-6).
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