Questionhow to change the water pump
AnswerREMOVAL
The water pump on all models can be replaced without discharging the air conditioning system.
WARNING: DO NOT REMOVE PRESSURE CAP WITH THE SYSTEM HOT AND UNDER PRESSURE BECAUSE SERIOUS BURNS FROM COOLANT CAN OCCUR.
NOTE: It is normal for the water pump to weep a small amount of coolant from the weep hole (black stain on water pump body). Do not replace the water pump if this condition exists. Replace the water pump if a heavy deposit or a steady flow of engine coolant is evident on water pump body from the weep hole (shaft seal failure). Be sure to perform a thorough analysis before replacing water pump.
Drain cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
Remove accessory drive belts (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
NOTE: The water pump is driven by the timing belt.
Remove engine timing belt (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT AND SPROCKETS - REMOVAL).
Remove water pump mounting bolts (WATER PUMP - 3.5L ENGINE). Note position of longer bolt for proper re-installation.
Remove water pump body from engine (WATER PUMP - 3.5L ENGINE).