Removal and Installation

THERMOSTAT AND WATER PIPING


Removal and Installation


REMOVAL

Removal of Thermostat
1. Partially drain engine coolant from the radiator. Changing Engine Coolant.

CAUTION:
Perform when engine is cold.
2. Disconnect the water suction hose from the water inlet.
3. Remove the water inlet, thermostat and rubber ring.

Removal of Thermostat Housing, Water Outlet and Heater Pipe
1. Disconnect the negative battery terminal. Removal and Replacement.
2. Remove the intake manifold. Removal And Installation.
- Remove upper radiator hose.
- Remove water hoses.
3. Remove the thermostat housing, water outlet and heater pipe.

Removal of Water Cut Valve
1. Partially drain the engine coolant from the radiator. Changing Engine Coolant.

CAUTION:
Perform when the engine is cold.
2. Disconnect the water cut valve connector.
3. Disconnect the water hoses from the water cut valve.
4. Remove the water cut valve.

INSPECTION AFTER REMOVAL





- Place a thread so that it is caught in the valve of the thermostat.
Immerse fully in a container filled with water. Heat while stirring.
- The valve opening temperature is the temperature at which the valve opens and falls from the thread.
- Continue heating. Check the full-open lift amount.
- After checking the full-open lift amount, lower the water temperature and check the valve closing temperature.






INSTALLATION
Installation is in the reverse order of removal.

Installation of Thermostat





- Install the thermostat with the whole circumference of each flange part fit securely inside the rubber ring as shown.
- Install the thermostat with the jiggle valve facing upwards.

Installation of Water Outlet Pipe and Heater Pipe
First apply a neutral detergent to the O-rings, then quickly insert the insertion parts of the water outlet pipe and heater pipe into the installation holes.

INSPECTION AFTER INSTALLATION
- Check for leaks of the engine coolant. Inspection.
- Start and warm up the engine. Visually check for leaks of the engine coolant.