RAM 3500 Truck 2WD V10-8.0L VIN W (1997)
6. 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), or equivalent can be used. Place a bar or screwdriver between the water pump
pulley bolts to prevent the pulley from rotating.
7. If water pump is being replaced, do not unbolt fan blade assembly from the thermal control fan drive.
8. Remove fan blade/fan drive and fan shroud as an assembly from vehicle.
CAUTION: 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. Do not remove the
water pump pulley bolts at this time.
9. Remove accessory drive belt as follows: The drive belt is equipped with a spring loaded automatic tensioner.
NOTE: Relax the tension from the belt by rotating the tensioner counterclockwise (as viewed from front). The threads on the pulley bolt are
left-hand. When all belt tension has been relaxed, remove accessory drive belt.
10. Remove the four water pump pulley-to-water pump hub bolts and remove pulley from vehicle.
11. Remove the lower radiator hose at- water pump.
12. Remove heater hose at water pump fitting.
