Water Pump: Service and Repair

DISASSEMBLY
1. Drain the coolant and disconnect the coolant inlet pipe connection hose from the coolant pump.
2. Remove the drive belt and engine coolant pump pulley.
3. Remove the timing belt covers and the timing belt idler.
4. Remove the coolant pump mounting bolts, then remove the alternator brace.
5. Remove the coolant pump assembly from the cylinder block.

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





3. Check for coolant leakage. If coolant leaks then the seal is defective. Replace the coolant pump assembly.

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





2. Install anew coolant pump gasket to the coolant pump and tighten the bolts to the specified torque.
Tightening torque
Coolant pump to cylinder block
A: 12 - 15 Nm (120 - 150 kg.cm, 9 - 11 ft. lbs.)
B: 20 - 27 Nm (200 - 270 kg.cm, 15 - 20 ft. lbs.)
3. Install the timing tensioner and timing belt. Adjust the timing belt tension.
4. Install the timing belt covers.
5. Install the coolant pump pulley and drive belt, and then adjust the belt tension.
6. Refill the system with clean coolant.
7. Run the engine and check for leaks.