Water Pump: Service and Repair
Water Pump Removal and InstallationWARNING:
^ Check to make sure that engine coolant temperature is cold before removing any part of cooling system.
^ Also be sure to disconnect negative cord from battery terminal before removing any part.
Removal
1. Disconnect negative cable at battery.
2. Drain coolant.
3. Remove radiator outlet hose from thermostat cap (2).
4. Remove heater outlet pipe bolt (1).
5. Remove generator belt.
6. Remove radiator.
7. Remove A/C compressor from its bracket with hose still attached (if equipped).
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 engine block.
2. Install heater outlet pipe to water pump (1), then install water pump by using new bolts (2) to cylinder block and tighten to specified torque.
NOTE: Use NEW bolts (total of 4) to install water pump to engine block. Failure to do so may result water leakage.
Tightening torque
Water pump bolt (a): 25 Nm (2.5 kg-m, 18.0 ft. lbs.)
3. Install A/C compressor to its bracket.
4. Install radiator.
5. Install heater outlet pipe bolt (1).
6. Install generator belt.
7. Install radiator outlet hose to thermostat cap (2).
8. Fill coolant.
9. Connect negative cable at battery.
Inspection
NOTE:
Do not disassemble water pump.
If any repair is required on pump, replace it as assembly.
1. Rotate water pump by hand to check for smooth operation.
If pump does not rotate smoothly or makes abnormal noise, replace it.
2. Inspect water pump impeller (2) for damage.
Replace as necessary.
NOTE: Do not disassemble water pump (1) to check the water pump impeller.