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1998 Cadillac Deville w/ Northstar engine. Needs waterpump ...

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1998 Cadillac Deville w/ Northstar engine. Needs waterpump replacement.

Here is how it is done. Let me know if you have any problems! You really should get yourself a water pump socket. It makes this job go much easier. This is the tool that turns waterpump out. Good luck!

Water Pump Replacement

Removal Procedure


Tools Required

J 38816-1A Water Pump Remover/Installer

  1. Drain the cooling system.
  2. Remove the air cleaner assembly.
    Object Number: 315078  Size: SH

  3. Remove the water pump belt cover (1).
    Object Number: 69920  Size: SH

  4. Remove the water pump drive belt.
  5. Remove the bypass hose.
    Object Number: 69919  Size: SH

  6. Remove the lower radiator hose from the thermostat housing.
    Object Number: 69918  Size: SH

  7. Remove the bolts from the water pump cover.
  8. Remove the water pump cover.
    Object Number: 69917  Size: SH

  9. Remove the water pump, the pump seal, and the gasket from the housing using the J 38816-1A . Turn the tool clockwise in order to remove the water pump.
  10. Remove the water pump from the vehicle.
  11. Clean the water pump and the pump cover sealing surfaces.

Installation Procedure


Tools Required

J 38816-1A Water Pump Remover/Installer


    Object Number: 69917  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the water pump using J 38816-1A . Turn the tool counterclockwise in order to install the pump.

    Tighten
    Tighten the water pump to 100 N·m (73 lb ft).


    Object Number: 69918  Size: SH

  2. Install the water pump housing cover and the bolts.

    Tighten
    Tighten the water pump housing cover bolts to 10 N·m (89 lb in).


    Object Number: 69919  Size: SH

  3. Install the lower radiator hose to the thermostat housing.
    Object Number: 69920  Size: SH

  4. Install the thermostat bypass hose.
  5. Install the water pump drive belt.
    Object Number: 315078  Size: SH

  6. Install the water pump belt cover (1).
  7. Install the air cleaner assembly.
  8. Refill the cooling system.
Customer: replied 9 years ago.
I wasn't really planning to do this myself. Although now I think I just might. Your answer is great! I was really trying to figure out what I would be charged in shop labor hours to have the work done. I've already looked up the price of a replacement pump.
It calls for 2.2 hours to replace the pump. All you will need to do is find out what your going labor rate in your area is and multiply it by 2.2. This will give you an accurate estimate. You will also need to figure on a couple quarts of antifreeze. I hope this helps!
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