Water Pump: Service and Repair

REMOVAL
1. Disconnect negative cable at battery.
2. Drain coolant.





3. Remove radiator outlet hose from thermostat cap.
4. Remove heater outlet pipe bolt.
5. Remove generator belt.
6. Remove radiator (for vehicle with A/C only).
7. Remove A/C compressor from its bracket with hose still attached (if equipped).





8. Remove water pump assembly by removing its 4 bolts.

NOTE: Do not lose dowel pin when removing water pump.

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 for damage.
Replace as necessary.

NOTE: Do not disassemble water pump to check the water pump impeller.

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, then install water pump by using new bolts 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 (a): 25 Nm (2.5 kg-m, 18.0 ft. lbs.)
3. Install A/C compressor to its bracket.
4. Install radiator referring to previous page.





5. Install heater outlet pipe bolt.
6. Install generator belt.
7. Install radiator outlet hose to thermostat cap.
8. Fill coolant.
9. Connect negative cable at battery.