RAM 2500 Van V8-5.9L VIN Z (1997)
Fan Blade: Service and Repair
Cleaning and Inspection
The fan cannot be repaired. If the fan is damaged, it must be replaced. Inspect the fan as follows:
1. Remove fan blade and viscous fan drive assembly from engine. Refer to the preceding Removal procedure.
2. Remove fan blade assembly from viscous fan drive unit (four bolts).
3. 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.
CAUTION: Do Not attempt to bend or straighten fan blades if not within specifications.
4. Inspect fan assembly for cracks, bends, loose rivets or broken welds. Replace fan if any damage is found.
CAUTION: If the fan blade assembly is replaced because of mechanical damage, the water pump and thermal viscous fan drive should also be
inspected. These components could have been damaged due to excessive vibration.
