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Eric, Automotive Repair Shop Manager
Category: Cadillac
Satisfied Customers: 29702
Experience:  20+ yrs. experience as repair shop manager and technician.
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How do i remove the water pump on a 1988 deville

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how do i remove the water pump on a 1988 deville

here are directions for the water pump on your Deville 4.5L engine:

  1. Disconnect the negative battery cable.
  2. Drain and recycle the engine coolant.
  3. Remove the air filter assembly. Disconnect and remove the coolant recovery tank.
  4. Disconnect and remove the cross brace.
  5. Remove the water pump pulley bolts.
  6. Remove the serpentine drive belt and the water pump pulley.
  7. Remove the water pump-to-engine bolts and the pump.

Click image to see an enlarged view

Fig. Water pump assembly-4.5L and 4.9L engines

To install:

  1. Clean the gasket mounting surfaces.
  2. Place a new gasket over the water pump studs.
  3. Install the water pump. Tighten the water pump bolts as follows:
    1. Water pump-to-engine Torx® bolts to 30 ft. lbs. (40 Nm)
    2. Water pump-to-engine stud nuts to 5 ft. lbs. (7 Nm)
    3. Hex head bolts to 30 ft. lbs. (40 Nm)
    4. Remaining hex head bolts to 5 ft. lbs. (7 Nm).

  4. Install the water pump pulley. Install the water pump pulley bolts finger-tight.
  5. Install the serpentine drive belt.
  6. Tighten the water pump pulley bolts to 22 ft. lbs. (30 Nm).
  7. Install the cross brace.
  8. Install and connect the coolant recovery tank. Install the air filter assembly.
  9. Connect the negative battery cable.
  10. Fill cooling system and check for leaks. Start the engine and allow it to come to normal operating temperature. Recheck for leaks. Top-up the coolant.
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