Jeep Wrangler/YJ 1987-1995 Repair Guide

Water Pump

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REMOVAL & INSTALLATION



See Figures 1 through 11



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Fig. Fig. 1: Water pump removal and installation-2.5L, 4.0L and 4.2L engines



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Fig. Fig. 2: Removing the fan and pulley attaching bolts



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Fig. Fig. 3: Removing the fan and pulley assembly from the vehicle



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Fig. Fig. 4: Removing the fan shroud from the vehicle



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Fig. Fig. 5: Removing the fan pulley from the water pump



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Fig. Fig. 6: Removing the power steering pump retaining bolts



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Fig. Fig. 7: Removing the power steering pump and bracket retaining bolts



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Fig. Fig. 8: Remove the power steering pump and move it aside without disconnecting the fluid lines



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Fig. Fig. 9: Remove the power steering pump mounting bracket



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Fig. Fig. 10: Disconnect the lower hose at the water pump



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Fig. Fig. 11: Removing the water pump mounting bolts

Some vehicles equipped with air conditioning and a serpentine drive belt use a reverse-rotating water pump coupled with a viscous fan drive assembly. These components are identified by the word REVERSE stamped on the cover of the viscous drive and on the inner side of the fan. The word REV is also cast into the body of the water pump.

  1. Drain the cooling system.
  2.  


CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Disconnect the hoses at the pump.
  2.  
  3. Remove the drive belts.
  4.  
  5. Remove the fan and shroud.
  6.  
  7. Remove the power steering pump bracket.
  8.  
  9. Unbolt and remove the pump.
  10.  

To install:
  1. Clean the mating surfaces thoroughly.
  2.  
  3. Using a new gasket, install the pump and torque the bolts to 13 ft. lbs. (18 Nm) for 1987-92 vehicles, or 22 ft. lbs. (30 Nm) for 1993-95 vehicles.
  4.  
  5. Install the fan and shroud.
  6.  
  7. Install the power steering pump bracket.
  8.  
  9. Install and adjust the drive belts.
  10.  
  11. Connect the hoses at the pump.
  12.  

On 1989-90 engines, remove the coolant temperature sensor switch located in the intake manifold to permit air to escape from the block. Reinstall the switch when the system is filled.

  1. Fill the cooling system.
  2.  

 
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