GM Cutlass RWD 1970-1987 Repair Guide

Water Pump

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REMOVAL & INSTALLATIONSee Figures 1, 2, 3, 4 and 5

  1. Drain the cooling system. Remove the fan shroud, if necessary for clearance.
  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. Loosen the belt or belts, then remove the fan blades and pulley or pulleys from the hub on the water pump shaft. Remove the belt or belts.
  2.  
  3. Disconnect the hose from the water pump inlet and the heater hose from the nipple. Remove the bolts, then remove the pump and gasket from the timing case cover or engine block.
  4.  



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Fig. Fig. 1: Remove any accessory brackets which may interfere with water pump removal



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Fig. Fig. 2: Remove all hoses attached to the water pump



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Fig. Fig. 3: Remove the water pump attaching bolts



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Fig. Fig. 4: Remove the water pump from the vehicle



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Fig. Fig. 5: Always clean the gasket surfaces before installing a new pump

  1. Check the pump shaft bearings for end-play or roughness in operation. Water pump bearings usually emit a squealing sound with the engine running when the bearings need to be replaced. Replace the pump if the bearings are not in good shape or have been leaking.
  2.  

To install:
  1. Install the pump assembly with a new gasket. Bolts and lock washers must be torqued evenly.
  2.  
  3. Connect the radiator hose to the pump inlet and the heater hose to the nipple. Fill the cooling system and check all points of possible coolant leaks.
  4.  
  5. Install the fan pulley or pulleys and the fan blade. Install the belt or belts and adjust for correct tension.
  6.  

 
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