RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
Fan Blade And Viscous Fan Drive-Typical
7. The thermal viscous fan drive is attached (threaded) to the water pump hub shaft. Remove the fan/fan drive assembly from water pump by turning
the mounting nut counterclockwise (as viewed from front). Threads on the fan drive are RIGHT-HAND. A Snap-On 36 MM Fan Wrench (number
SP346 from Snap-On Cummins Diesel Tool Set number 2017DSP) can be used. Place a bar or screwdriver between the water pump pulley bolts to
prevent the pulley from rotating.
8. If water pump is being replaced, do not unbolt fan blade assembly from the thermal control fan drive.
9. Remove fan blade/fan drive and fan shroud as an assembly from vehicle.
10. After removing fan blade/fan drive assembly, do not place the thermal viscous fan drive in the horizontal position. If stored horizontally, the
silicone fluid in the viscous drive could drain into its bearing assembly and contaminate the bearing lubricant.
11. Do not remove the water pump pulley bolts at this time.
Belt Tensioner-3.9L V-6 Or 5.2L/5.9L V-8 LDC-Gas Engines
