Water Pump: Service and Repair
Removal1. Disconnect negative cable at battery.
2. Drain coolant and tighten drain plug.
3. Remove radiator outlet hose from thermostat cap.
4. Remove heater outlet pipe bolt (1).
5. Remove generator belt.
6. Remove A/C condenser cooling fan assembly (if equipped with A/C).
7. Remove A/C compressor from its bracket with hoses still attached (if equipped with A/C).
8. Remove water pump assembly (1) by removing its 4 bolts (2).
NOTE: Do not lose dowel pin when removing water pump.
Installation
1. Install new O-ring to water pump.
NOTE: Do not forget to install dowel pins on water pump side before mounting water pump to cylinder block.
2. Install heater outlet pipe to water pump, then install water pump (1) by using new bolts (2) to cylinder block and tighten to specified torque.
CAUTION: Use NEW bolts (2) to install water pump (1) to cylinder block. Failure to do so may result water leakage.
Tightening torque
Water pump mounting bolt (a): 25 Nm (2.5 kgf-m, 18.0 ft. lbs.)
3. Install A/C compressor to its bracket.
4. Tighten heater outlet pipe bolt (1).
5. Install generator belt.
6. Install radiator outlet hose to thermostat cap.
7. Fill coolant.
8. Connect negative cable at battery.
9. Check each part for leakage.
Inspection
CAUTION: Do not disassemble water pump. If any repair is required on pump, replace it as assembly.
^ Rotate water pump by hand to check for smooth operation. If pump does not rotate smoothly or makes abnormal noise, replace it.
^ Inspect water pump (1) impeller (2) for damage. Replace as necessary.