Water Pump: Service and Repair
COOLANT PUMPRemoval Procedure
1. Drain the engine cooling system to a level below the thermostat housing.
2. Remove the timing belt.
3. Remove the timing belt tension roller retaining bolt.
4. Remove the timing belt tension roller.
5. Remove the coolant pump mounting bolts.
6. Remove the coolant pump from the engine block.
7. Remove the ring seal from the coolant pump.
Inspection Cleaning Procedure
1. Inspect the coolant pump body for cracks and leaks.
2. Inspect the coolant pump bearing for play or abnormal noise.
3. Inspect the coolant pump pulley for excessive wear. If the coolant pump is defective, replace the coolant pump as a unit.
4. Clean the mating surfaces of the coolant pump and the engine block.
Installation Procedure
1. Install a new ring seal to the coolant pump.
2. Coat the sealing surface of the ring seal with Lubriplate (R).
3. Install the coolant pump to the engine block with the flange aligned with the recess of the rear timing belt cover.
4. Secure the coolant pump to the engine block with the mounting bolts.
- Tighten the coolant pump mounting bolts (DOHC) to 20 Nm (15 ft. lbs.).
5. Install the timing belt tension roller to the oil pump with the flange inserted into the recess of the oil pump.
6. Install the timing belt tension roller bolt. Do not tighten the bolt at this time.
7. Install the timing belt.
8. Refill the engine cooling system.