Water Pump: Service and Repair

REMOVAL

WARNING: Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiator.

Water Pump
1. Drain the engine coolant.

CAUTION: Perform when the engine is cold.

2. Remove the alternator.
3. Remove the water pump.
^ Coolant will leak from the cylinder block, have a drain pan in position.

CAUTION:
^ Handle the water pump vane so that it does not contact any other parts.
^ The water pump cannot be disassembled and should be replaced as a unit.

4. Remove the water pipe mounting bolts.
5. Remove the water pump housing from the engine block. Use a new gasket for installation.

Water Pipe
1. Remove the water pump.
2. Remove the exhaust manifold.
3. Remove the water pipe from the thermostat housing.

INSPECTION AFTER REMOVAL





^ Visually check that there is no significant dirt or rust on the water pump body and vane.
^ Check that there is no play when rotating the vane shaft, and that it turns smoothly when rotated by hand.
^ If necessary, replace the water pump as an assembly.

INSTALLATION
Installation is in the reverse order of removal.

NOTE: When inserting the water pipe end into the thermostat housing, apply coolant to the O-ring seal and install immediately.

INSPECTION AFTER INSTALLATION
After installing the water pump and pipe, check for leaks using the radiator cap tester.