Symptom Tree
|
Fan drive belt or water pump belt is broken |
Check the fan drive belt and water pump belt. Replace the belts if necessary. Refer to Section 6. |
 |
|
Cold weather radiator cover or winterfront is closed |
Open the cold weather radiator cover or the winterfront. Maintain a minimum of 387 cm2 [60 in2] of opening at all times. Refer to Section 1. |
|
|
Radiator shutters are notopening completely, or the shutterstat setting is wrong |
Inspect the radiator shutters. Repair or replace if necessary. Check the shutterstat setting. Refer to the manufacturer’s instructions. |
|
|
Charge air cooler fins, radiator fins, or air conditioner condenser fins are damaged or obstructed with debris |
Inspect the charge air cooler, air conditioner condenser, and radiator fins. Clean, if necessary. Refer to Section 4. |
|
|
Intake manifold temperature gauge is malfunctioning, if equipped |
Test the temperature gauge. Refer to the OEM service manual. |
|
|
Fan shroud is damaged or missing, or the air recirculation baffles are damaged or missing |
Inspect the shroud and the recirculation baffles. Repair, replace, or install, if necessary. Refer to the OEM service manual. |
|
|
Vehicle speed is too low for adequate cooling with high engine load |
Reduce the engine load. Increase the engine (fan) rpm by downshifting. |
|
| Contact a Cummins Authorized Repair Facility |
