Water Pump: Service and Repair

Water Pump





Material








Removal and Installation
1. Drain the cooling system.
2. Remove the air cleaner assembly.
3. Disconnect the thermostat housing to bypass tube hose and position aside.
^ To install, tighten to 5 Nm (44 inch lbs.).
4. Remove the 2 thermostat housing bolts and position aside the thermostat housing.
^ Discard the O-ring seal.
^ To install, tighten to 10 Nm (89 inch lbs.).
5. Disconnect the coolant pump hose and position aside.

6. CAUTION: The center coolant pump uses a sealing washer and must be replaced whenever the bolt is removed.

Remove the 4 coolant pump bolts and the coolant pump.
^ To install, tighten in the following sequence:
^ Tighten the coolant pump center bolt to 4 Nm (35 inch lbs.).
^ Loosely install the 3 coolant pump outer bolts.
^ Tighten the coolant pump center bolt to 25 Nm (18 ft. lbs.).
^ Tighten the 3 coolant pump outer bolts to 10 Nm (89 inch lbs.).
7. To install, reverse the removal procedure.
^ Install a new sealing washer on the center coolant pump bolt.
^ Install a new O-ring seal on the thermostat housing and lubricate with clean engine coolant.
8. Fill and bleed the cooling system.