1. Thermostat; 2. Rubber ring; 3. Outlet pipe; 4. Radiator hose (upper); 5. Heater hose; 6. Heater tube; 7. Copper washer; 8. Engine coolant temperature sensor; A. To the radiator; B. To heater core
Removing
1. Drain the coolant.
Caution: Drain the coolant when it is cold. Do not remove the radiator cap when the engine is hot. High-pressure coolant splashing out of the radiator can cause severe burns.
2. Remove the air duct and air cleaner housing. See chapter Mechanical part of the engine.
3. Disconnect the radiator hose (upper).
4. Remove the inlet pipe and thermostat.
When removed, the coolant remaining in the engine will pour out. Collect it in a container.
5. Remove the engine coolant temperature sensor if necessary.
6. If necessary, disconnect the heater tube.
Check after removal
Tie the thread so that it is secured to the thermostat valves. Submerge them completely in a container of water. Warm up by shaking (the illustration shows a thermostat as an example).
The valve opening temperature is the temperature at which the valve opens and falls off the string.
Keep heating. Check lift height when fully opened.
After checking the lift height at full opening, lower the water temperature and check the valve closing temperature.
If abnormalities are observed when closing the valve at normal temperature or the measured values are out of range, replace the thermostat.
Standard values
Valve opening temperature | 86.5-89.5°С |
Lift height at full opening | In mm or more 101°C |
Valve closing temperature | 83°C |
Installation
Installation is carried out in the reverse order of removal, taking into account the following:
Installing a thermostat
1. Install the thermostat so that the flange parts are securely fixed around the perimeter inside the rubber ring.
2. Install the thermostat with the vibration valve up as shown.
Note: Do not pinch the vibration valve.
Outlet fitting
Install the outlet pipe at the top.
Replace the thermostat.
Installing the heater tube
Apply sealant to the threads and screw in.
Use branded sealant or equivalent.
Check after installation
Check for engine coolant leaks using the radiator cap adapter (special tool: EG17650301) and pump (suitable tool) (models without air conditioning) or with a pump and an adapter for the reservoir cap (models with air conditioning).
Start the engine and warm it up to normal operating temperature. Perform a visual check to make sure there are no coolant leaks.