Water Pump: Service and Repair

WATER PUMP

REMOVAL
1. Disconnect negative battery cable.
2. Drain cooling system
3. Remove fan/viscous fan drive assembly from water pump. Do not attempt to remove fan/ viscous fan drive assembly from vehicle at this time.
4. If water pump is being replaced, do not unbolt fan blade assembly from thermal viscous fan drive.
5. Remove two fan shroud-to-radiator screws. Disconnect the coolant overflow hose, windshield washer fluid hose and washer pump electrical connector.
6. Remove fan shroud and fan blade/viscous fan drive assembly from vehicle.
7. Remove A/C compressor and generator brace.
8. Remove idler pulleys.
9. Remove belt tensioner assembly.
10. Remove upper and lower radiator hoses.
11. Remove heater hoses.
12. Remove water pump mounting bolts and remove

CLEANING
Clean the gasket mating surface. Use caution not to damage the gasket sealing surface.

INSPECTION
Inspect the water pump assembly for cracks in the housing, water leaks from shaft seal, worn bearing or impeller rubbing either the pump body or timing chain case/cover.

INSTALLATION
1. Install water pump and mounting bolts. Tighten mounting bolts to 24 Nm (18 ft. lbs.).
2. Install heater hoses.
3. Install upper and lower radiator hoses.
4. Install belt tensioner assembly.
5. Install idler pulleys.
6. Install A/C compressor and alternator brace. Tighten bolt and nuts to 28 Nm (21 ft. lbs.).
7. Install fan shroud assembly and two fan shroud mounting screws.
8. Install the fan/viscous drive assembly.
9. Be sure of at least 25 mm (1.0 in.) between tips of fan blades and fan shroud.
10. Install accessory drive belt.
11. Connect negative battery cable.
12. Fill coolant.
13. Pressure test coolant system.