Coolant pump and thermostat. 4-cylinder petrol engine 111
1 — a sealing ring of the case of the thermostat; 2 - Cork; 3 - O-ring; 4 - Cover; 5 - Bolt M8, 25Nm; 6 - Coolant pump; 7 - Bolt M8, 25Nm; 8 - Bolt, 10Nm; 9 - Pulley; 10 - Bolt M6, 10Nm; 11 - Bolt, 10Nm; 12 - Thermostat cover; 13 - Thermostat; 14 - Sealing ring of the thermostat cover; 15 - Sealing gasket for the coolant pump; 16 - Thermostat housing; 17 - Clamp; 18 - Coolant hose; 19 - Gasket; 20 - Clamp
Note. The illustrations show the thermostat disconnected from the thermostat cover. The thermostat is built into the cover and can be checked as a set.
Gas engine
Removing
Note. The thermostat is built into the thermostat cover and can only be replaced as a set.
Attention! When the engine is hot, cover the expansion tank with a thick cloth before opening it to prevent burns from hot coolant and steam. The cover should only be removed when the coolant temperature is below +90°C.
1. Drain the coolant into a container as described in Section Coolant replacement - general notes.
2. Remove engine covers from the front (2) and left (1).
3. Remove the coolant hoses from the radiator and expansion tank on the thermostat cover. First loosen the clamps and move them completely back.
4. Turn away a cover of the thermostat and remove it together with the thermostat.
Attention! The thermostat and thermostat cover form a single unit. When removed, the thermostat may be damaged and cannot be reinstalled.
5. Remove the thermostat housing gasket and clean the sealing surfaces.
Installation
1. Install a new O-ring, thermostat cover with thermostat and secure with a torque of 10 Nm.
2. Put the coolant hoses on the connecting fittings and secure with clamps.
Note. At the same time, check the condition of the hoses and clamps, replace if necessary.
3. Install the front and left engine covers.
Diesel engine
Coolant pump and thermostat. Diesel engines
1 - Bolt M6x28, 14Nm; 2 - Pulley; 3 - Ventilation hose; 4 - Coolant pump; 5 - Sealing gasket; 6 - Impeller; 7 - Oil seal; 8 - Gasket; 9 - Bolt M6x25, 9Nm; 10 - O-ring; 11 - Sensitive element of the temperature sensor; 12 - Clamp; 13 - Thermostat housing, thermostat (+92°С) embedded; 14 - Connecting element, between the thermostat housing and the housing of the distribution mechanism
Only differences from the petrol engine are described.
1. Disconnect the temperature sensor sensor connector (14).
2. Disconnect the fuel line holder from the thermostat housing.
3. Disconnect the coolant hoses and ventilation hose (1) at the thermostat housing (1).
4. Unscrew the thermostat housing (12). Tightening torque 9Nm.