Below are replacement procedures for water pump on the 3.0L engines. If your engine size is different than 3.0L, let me know so I can correct procedures.
Disconnect the negative battery cable.
Drain the cooling system.
Remove the drive belts. Remove the timing belt covers and the timing belt.
Remove the water pump mounting bolts.
Separate the water pump from the water inlet pipe and remove the water pump.
Inspect the water pump and replace as necessary.
Clean all gasket and O-ring surfaces on the water pump and water pipe inlet tube.
Wet a new O-ring with water and install it on the water inlet pipe.
Install a new gasket on the water pump.
Install the pump inlet opening over the water pipe and press until the pipe is completely inserted into the pump housing.
Install the water pump-to-block mounting bolts and tighten to 20 ft. Lbs. (27 Nm).
Install the timing belt and timing belt covers. Install and adjust the drive belts.
Reconnect the negative battery cable. Fill the cooling system to the proper level with a 50/50 mixture of clean, ethylene glycol antifreeze and water.
Run the engine and check for leaks. Top off the coolant level, if necessary.
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Sunday, February 8th, 2009 AT 6:47 PM