Water Pump: Service and Repair

ENGINE COOLANT PUMP





COMPONENTS

REMOVAL
1. Using the drain plug, drain the coolant.
2. Remove the drive belt.
3. Remove the timing belt cover, the auto tensioner and idler pulley.
4. Remove the engine coolant pump mounting bolts.





5. Remove the engine coolant pump assembly from the cylinder block.

INSPECTION
1. Check the engine coolant pump for cracks, damage or wear, and replace the pump assembly if necessary.
2. Check the bearing for damage, abnormal noise and sluggish rotation and replace the pump assembly if necessary.
3. Check the seal for leaks and replace the pump assembly if necessary.

INSTALLATION
1. Clean the gasket surfaces of the engine coolant pump body and the cylinder block.





2. Install the new engine coolant pump gasket and pump assembly. Tighten the bolts to the specified torque.
Tightening torque
Engine coolant pump bolt
Head mark
(M8) "7": 15 - 22 Nm (150 - 220 kg-cm, 11 - 16 ft. lbs.)
(M10): 33 - 50 Nm (330- 500 kg-cm, 24 - 36 ft. lbs.)
3. Install the auto tensioner and timing belt. Adjust the timing belt tension, then install the timing belt cover.
4. Install the drive belt and then adjust the auto tensioner.
5. Refill the coolant.
6. Run the engine and check for leaks.