Extraction
Thermostat 5 is located in outlet fitting 3 (pic 2.2), bolted to the head above the flywheel.
Pic. 2.2. Cooling system - engines 1.1 and 1.3 l
1 - left cover; 2 - bolt securing the radiator; 2a - permanent fixing bracket; 3 - clamping belt; 4 - branch pipe of the head / radiator; 5 - radiator; 5a - fixing bolt; 5b - removable bracket, 6 - right cover. 7 fan blades 8 - fan motor, 9 - fan cover; 9a - fastening of wires supplying the fan; 10 - branch pipe of the surge tank / branch pipe of the stove; 11 - radiator thermal switch; 12 - surge tank. 13 - branch pipe of the surge tank / radiator; 14 - cork; 15 - outlet fitting.
To extract it, you first need to:
1. Drain the liquid from the cooling system.
2. Loosen the screws and remove the thermostat cover. 7. Set the cover with the top hose aside.
3. Remove the o-ring 6.
4. Remove the thermostat from the housing.
Examination
5. To check if the thermostat is serviceable, measure its initial length. Hang it in a container of water so that it is completely submerged in water. Gradually heat the water and record the temperature at which the thermostat begins to open.
This temperature should be 88°C. After heating the water to a temperature of 102°C, at which the thermostat should open completely, check whether the thermostat has extended by 7 mm in relation to the length before heating. Then check again its length after cooling - it should be the same as before heating.
6. Replace the thermostat with a new one if it does not work properly.
7. Clean the thermostat housing and the sealed surfaces of the housing and cover.
Installation
Installation is carried out in the reverse order of removal. It is necessary to replace the o-ring with a new one and tighten the cover bolts with a torque of 10 Nm. The air outlet must face up. Fill the cooling system with liquid.
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