Water Pump: Service and Repair

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 green/brown 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.

- The water pump on all models can be replaced without discharging the air conditioning system.





REMOVAL
1. Drain cooling system.
2. The water pump is driven by the timing belt. Refer to Engine for component removal to provide access to water pump.
3. Remove mounting bolts.
4. Remove pump body from engine.





INSTALLATION
1. Clean all O-ring surfaces on pump and cover.
2. Install new O-ring on water pump. Wet the O-ring with water to facilitate assembly.

CAUTION: Keep the O-ring free of oil or grease.

3. Install pump to housing mounting bolts and tighten to 12 Nm (105 inch lbs.).
4. Refer to Engine for timing belt installation procedure and reassemble engine.
5. Fill cooling system.