Water Pump: Service and Repair

Fig. 17 Water Pump Removal.:

1. Disconnect battery ground cable, then the coolant temperature switch connector.
2. Disconnect lower radiator hose from coolant inlet housing.
3. Remove timing belt and sprockets. Refer to TIMING BELT for procedure.

Fig. 18 Water Pump Bolt Tightening Sequence:

REMOVE WATER PUMP AND WATER PUMP COVER ASSEMBLY
Remove water bypass tubes to water pump cover attaching bolts, then the three water pump attaching bolts.
(a) Remove the two nuts holding the pump to the water by-pass pipe.
(b) Remove the three bolts in the sequence shown.
(c) Pull out the water pump together with pump cover.
(d) Remove the two 0-rings and gasket.






DISASSEMBLE WATER PUMP AND WATER PUMP COVER
Remove the three bolts, water pump and gasket from the pump cover.






INSPECTION OF WATER PUMP
Turn the pulley and check that the water pump bearing moves smoothly and quietly.






INSTALLATION OF WATER PUMP
1. ASSEMBLE WATER PUMP AND WATER PUMP COVER
Install a new gasket and the pump to the pump cover with the three bolts.
Torque: 90 kg-cm (78 in.lb, 8.8 N.m)






INSTALL WATER PUMP AND WATER PUMP COVER ASSEMBLY
(a) Install new two 0-rings and gasket to the pump cover and water by-pass pipe.






(b) Apply a light coat of engine oil on the 0-ring of the water by-pass pipe.
(c) Connect the pump cover to the water by-pass pipe. Do not install the nuts yet.
(d) Install the water pump with the three bolts. Torque the bolts in the sequence shown.
Torque: 95 kg-cm (82 in.lb, 9.3 N.m)






(e) Install the two nuts holding the pump cover to the water by-pass pipe.
Torque: 95 kg-cm (82 in.lb, 9.3 N.m)

2. INSTALL PULLEYS AND TIMING BELT

3. CONNECT RADIATOR LOWER HOSE

4. CONNECT WATER TEMPERATURE SWITCH CONNECTOR

5. FILL WITH ENGINE COOLANT