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Question posted by gshap66 on January 14th, 2013

Step By Step Directions To Replace Waterpump

water pump replacement

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Answer #1: Posted by bengirlxD on January 14th, 2013 6:39 PM

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Instructions

3.1L & 3.4L Impala Engines
- 1
  Place a drain pan underneath the radiator. When the engine is cool, drain the cooling system from the radiator into the pan.
- 2
  Disconnect the negative battery cable.
- 3
  Remove the accessory drive belt guard and the accessory drive belt.
- 4
  Loosen the water pump pulley bolts and remove the water pump pulley along with the water pump from the engine.
- 5
  Install the new water pump along with a new gasket, tightening the bolts to 89 inch pounds (10 Nm).
- 6
  Reinstall the water pump pulley, tightening the bolts to 18 foot pounds (25 Nm).
- 7
  Insert the accessory drive belt back into the engine along with the drive belt guard.
- 8
  Reattach the negative battery cable and refill the cooling system. Start the car and check for leaks when the engine reaches normal operating temperature.
3.5L Impala Engine
- 9
  Drain the cooling system about half way.
- 10
  Disconnect the surge tank outlet hose and remove the drive belt, the idler pulley and the water pump pulley.
- 11
  Loosen the long and short bolts to the water pump and remove them along with the pump, making note of where the bolts go for when you install the replacement pump.
- 12
  Install the new pump with a new gasket, tightening the bolts to 124 inch pounds (14 Nm).
- 13
  Reattach the water pump pulley, tightening the bolts to 106 inch pounds (12 Nm).
- 14
  Install the idler pulley, tightening the bolts to 37 foot pounds.
- 15
  Reinstall the drive belt and reattach the surge tank hose.
- 16
  Refill the cooling system. Start the car and check for leaks when the engine reaches normal operating temperature.
5.3L Impala Engine
- 17
  Drain the coolant from the cooling system.
- 18
  Remove the entire car battery along with the battery tray. Disconnect and remove the drive belt.
- 19
  Loosen and remove the three water pump bolts and remove the water pump and gasket.
- 20
  Clean the water pump gasket mating surfaces and install a new gasket.
- 21
  Install the new pump, tightening the three bolts to 89 inch pounds (10 Nm). Reinstall the drive belt.
- 22
  Reinstall the battery with the battery tray and refill the cooling system. Start the car and check for leaks when the engine reaches normal operating temperature.
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