Cooling System Components

REMOVAL





1. Remove water pump attaching screws to engine.
2. Remove oil level gauge.
3. Remove exhaust manifold cover.





4. Remove water hose.
5. Remove water pipe.
6. Remove O-ring.





7. Remove thermostat housing bolts and housing.
8. Remove thermostat, discard gasket and clean both gasket sealing surfaces.
9. Remove engine coolant temperature sensor.
10. Remove thermo switch.

INSTALLATION
1. Install thermo switch.
2. Install engine coolant temperature sensor. Tighten sensor to 7 Nm (5 ft. lbs.) torque.





3. Place a new gasket (dipped in clean water) on water box surface, center thermostat in water box on gasket. Place housing over gasket and thermostat, making sure thermostat is in the thermostat housing. Bolt housing to water box. Tighten bolts to 22 Nm (16 ft. lbs.).
4. Install O-ring.
5. Install water pipe.
6. Install water hose.
7. Install exhaust manifold cover.
8. install oil level gauge.





9. Install new O-ring gasket in water pump body O-ring groove.

CAUTION: Make sure O-ring is properly seated in water pump groove before tightening screws. An improperly located O-ring may cause damage to the O-ring and cause a coolant leak.

10. Assemble pump body to block and tighten screws to 12 Nm (9 ft. lbs.)
11. Rotate pump by hand to check for freedom of movement.

INSPECTION
Replace water pump body assembly if it has any of these defects:
1. Cracks or damage on the body.
2. Coolant leaks from the shaft seal, evident by coolant traces on the pump body.
3. Loose or rough turning bearing.
4. Impeller rubs either the pump body or the engine block.
5. Impeller loose or damaged.
6. Sprocket or sprocket flange loose or damaged.