Disconnect the fan clutch connector on the base harness from the fan clutch. NOTE: As the electric fan clutch mounting fastener is loosened, make sure…

The Cummins Inc. developed electromagnetic fan clutch product is an integrated package with the clutch, bracket, shaft, bearings, pulley, and fan spacer designed as a…

Check the color of fluid in the combustion gas leak tester. A yellow or green color will indicate a combustion leak. A blue color will…

Use a combustion gas tester, Part Number 3822985 or equivalent, to test for combustion gases in the cooling system. It is recommended that the cooling…

Allow the engine to cool and remove the radiator cap. Install a radiator pressure cap that has had the spring and the pressure relief valve…

Air in the coolant can result in loss of coolant from the overflow when the aerated coolant is hot. The heated air expands, increasing the…

The operating pressure of the cooling system and the lubricating system can result in the mixing of the fluids if there is a leak between…

Connect an electronic service tool to the vehicle’s data link. Turn the keyswitch to the ON position. Monitor the coolant temperature with the electronic service…

Winter fronts can be used to reduce the engine warm-up time and help maintain engine heat in cold climate locations. The winter fronts must only…

Shutters are designed to control airflow across the radiator. If the shutters fail to open when needed, the engine can run hot. Failure of the…