GM Full-Size Trucks 1980-1987 Repair Guide

Engine Fan and Clutch

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REMOVAL & INSTALLATION



See Figures 1 and 2

  1. Disconnect the negative battery cable
  2.  
  3. If necessary for access, remove radiator fan shroud.
  4.  
  5. Remove fan hub-to-water pump attaching bolts and remove fan clutch assembly. If vehicle is equipped with a fan clutch be sure to scribe a mark on both the fan and water pump to ease reassembly.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Use an open-end or box wrench to loosen the nuts retaining the fan and clutch assembly

  1. If necessary, remove the fan from the fan clutch hub.
  2.  

To install
  1. Clean the water pump hub and check for smoothness. Eliminate burrs or imperfections before proceeding.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: With the fan shroud positioned aside, lift the clutch fan upward and from the vehicle

  1. Install fan clutch hub to water pump. Torque attaching bolts to 20 lb. ft. (27 Nm)
  2.  


CAUTION
If a fan blade is bent or damaged, no attempt should be made to repair the damaged fan. A damaged fan should always be replaced with a new assembly. It is important that the fan remains in proper balance. If a fan were not in balance it could possibly fly apart and result in personal injury.

  1. If removed, install the fan shroud.
  2.  
  3. Reconnect the negative battery cable.
  4.  

 
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