Water Control Valve: Removal and Installation
Water Control Valve: Removal and InstallationWARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiator.
REMOVAL
CAUTION:
Perform when the engine cold.
1) Drain the engine coolant from radiator.
2) Remove the heater pipe, heater hose and water hoses.
3) Remove the heater outlet.
4) Remove the water control valve.
INSPECTION AFTER REMOVAL
^ Place a thread so that it is caught in the valve of the water control valve. Immerse fully in a container filled with water. Heat while stirring.
^ The valve opening temperature is the temperature at which the valve opens and the falls from the thread.
^ Continue heating. Check the full-open lift amount.
NOTE:
The full-open lift amount standard temperature for the water control valve is the reference value.
^ After checking the full-open lift amount, lower the water temperature and check the valve closing temperature.
Standard values
INSTALLATION
Installation is in the reverse order of removal.
^ Install the engine coolant temperature sensor if removed.
Use Genuine RTV Silicone Sealant or equivalent.
^ Install the water control valve with the whole circumference of the flange part fitting securely inside the rubber ring.
^ Install the water control valve with the up-mark facing up and the frame center part facing upwards. The position deviation may be within the range of ±10°.