Aspen 2007, Durango 2005-2007
Mechanical (Belt Driven) Fan
Removal & Installation
Partially drain the cooling system.
Remove the upper radiator hose.
Remove the air filter housing assembly.
Stop the water pump from turning with a special tool or prybar on the nuts. Loosen the fan nut (36mm). Turn CCW to loosen.
Position the fan/fan drive assembly in the radiator shroud.
Remove the two shroud mounting screws.
Remove the radiator shroud and fan drive assembly.
After removing fan blade/viscous fan drive assembly, do not place viscous fan drive in horizontal position. If stored horizontally, silicone fluid in the viscous fan drive could drain into its bearing assembly and contaminate lubricant.
Remove four bolts securing fan blade assembly to viscous fan drive.
Fig. Typical engine fan assembly
Fig. Remove the windshield washer bottle from the fan shroud
Fig. Loosening the fan nut
Fig. To loosen the fan nut, stop the pump shaft from turning. This tool will do it; you could also use a prybar. In this photo, the fan has been removed for clarity