Water Pump: Service and Repair

WATER PUMP





REMOVAL
1) Remove the radiator.
2) Remove the V-belts.
3) Remove the crank pulley.
4) Remove the timing belt.
5) Remove the automatic belt tension adjuster.





6) Remove the belt idler No. 2.





7) Remove the cam sprocket (LH) using ST.
8) Remove the belt cover (LH) No. 2.





9) Remove the tensioner bracket.





10) Disconnect the hose from water pump.
11) Remove the water pump.





INSTALLATION
1) Install the water pump onto cylinder block (LH).

NOTE:
^ Use anew gasket.
^ When installing the water pump, tighten the bolts in two stages in alphabetical sequence as shown in figure.





2) Install the hose to water pump.
3) Install the tensioner bracket.





4) Install the belt cover No. 2 (LH).





5) Install the cam sprocket (LH) using ST.
6) Install the belt idler No. 2.





7) Install an automatic belt tension adjuster with the tension rod held by a pin.
8) Install the timing belt.
9) Install the crank pulley.
10) Install the V-belts.
11) Install the radiator.

INSPECTION
1) Check the water pump bearing for smooth rotation.
2) Check the water pump pulley for abnormalities.
3) Make sure the impeller is not deformed or damaged.
4) Inspect the clearance between impeller and pump case.
Clearance between impeller and pump case:
Standard 0.5 - 1.5 mm (0.020 - 0.060 in)





5) After water pump installation, check pulley shaft for engine coolant leaks. If leaks are noted, replace the water pump assembly.