Radiator Cooling Fan: Service and Repair

FAN/RADIATOR

REMOVAL
3.7L/4.7L
1. Disconnect electric fan connector.
2. Remove shroud mounting bolts.
3. Remove shroud and fan assembly from vehicle.
4. Remove fan assembly mounting bolts and remove fan from shroud.

CLEANING
Clean the fan blades using a mild soap and water. Do not use an abrasive to clean the blades.

INSPECTION

WARNING: DO NOT ATTEMPT TO BEND OR STRAIGHTEN FAN BLADES IF FAN IS NOT WITHIN SPECIFICATIONS.

CAUTION: If fan blade assembly is replaced because of mechanical damage, water pump and viscous fan drive should also be inspected. These components could have been damaged due to excessive vibration.

1. Remove fan blade assembly from viscous fan drive unit (four bolts).
2. Lay fan on a flat surface with leading edge facing down. With tip of blade touching flat surface, replace fan if clearance between opposite blade and surface is greater than 2.0 mm (0.090 inch). Rocking motion of opposite blades should not exceed 2.0 mm (0.090 inch). Test all blades in this manner.
3. Inspect fan assembly for cracks, bends, loose rivets or broken welds. Replace fan if any damage is found.

INSTALLATION

1. Position fan assembly on shroud.
2. Install fan to fan shroud mounting nuts. Tighten to 6 Nm (50 inch lbs.).
3. Position fan and shroud assembly in vehicle.
4. Install shroud mounting bolts. Tighten to 6 Nm (50 inch lbs.).
5. Connect electric fan electrical connector.
6. Start engine and check fan operation.