Operation CHARM: Car repair manuals for everyone.

Hydraulic Cooling Fan Motor

1. Inspect the fan blade and shroud for any foreign materials. Clear the obstruction and continue the test procedure.
2. Rotate the fan to see if any contact between the shroud and blade exists. If contact is observed install a new fan shroud assembly.
3. Rotate the fan by hand; the fan should rotate freely (no resistance should be felt, the fan will free wheel with minimum effort). If any resistance is present install a new fan assembly.
4. Attempt to move the fan blade and shaft in and out and side to side; if any movement is detected install a new fan assembly.