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Scott K
Scott K, ASE Master Technician
Category: Buick
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Experience:  GM and Buick Experience
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how to remove the water pump on 98 buick regal

Resolved Question:

how to remove the water pump on 98 buick regal?
Submitted: 7 years ago.
Category: Buick
Expert:  Scott K replied 7 years ago.

Hello and Welcome to Just answer,


The instructions below are for the 3800 engine.


Object Number: 70258  Size: SH

  • Drain the coolant.
  • Reposition the accessory wiring junction block.
  • Loosen water pump pulley bolts.
  • Remove accessory drive belt.
  • Remove water pump pulley.

  • Object Number: 46177  Size: SH

  • Remove power steering pump mounting bolts and reposition.
  • Remove bolts from water pump.
  • Remove water pump.
  • Clean the water pump mating surfaces.
  • Installation Procedure

      Object Number: 46177  Size: SH

    1. Install the gasket and water pump.
    2. Install the bolts to the water pump .
    3. Tighten

      Tighten the long bolts to 20 N·m (15 lb ft) plus 40 degrees
      Tighten the short bolts to 15 N·m (11 lb ft) plus 80 degrees.

      Object Number: 70258  Size: SH

    4. Install the water pump pulley, do not tighten the bolts.
    5. Install the power steering pump with mounting bolts.
    6. Install the accessory drive belt.
    7. Tighten the water pump pulley bolts.
    8. Tighten
      Tighten the bolts to 13 N·m (115 lb in)

    9. Install the accessory wiring junction block.
    10. Fill the cooling system.
    11. Inspect for leaks.



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