2.16.4. Thermostat of cooling liquid

Water pomp, thermostat of cooling liquid, oil heater of the 4-cylinder petrol and diesel engine

1. Bolt, 20 N · m
2. Belt pulley
3. Maple belt of a water pomp and generator
4. Bolt, 10 N · m
5. Water pomp.
To check ease of rotation of a shaft
6. Bolt, 20 N · m
7. Ring
8. Top hose of cooling liquid
9. Sensor of temperature of cooling liquid 2-polar
10. Thermostat and sensor of 4-polar
11. Ring
12. Lock washer
13. To a tee of a broad tank
14. To a heater radiator
15. From a tee of a broad tank
16. From the heat exchanger
17. Carving screw of discharge of cooling liquid, 10 N · m
18. Sealing ring
19. Oil heater
20. Lower hose of cooling liquid
21. Thermostat of cooling liquid
22. Laying

Sizes of the cold and heated thermostat

Removal

PERFORMANCE ORDER

Prevention

Designations of details belong to cooling systems of the 4-cylinder engine. Removal and installation from the 5-cylinder engine is carried out similarly.


1. To substitute suitable capacity under a connecting branch pipe of cooling liquid.
2. To unscrew bolts (4) of a connecting branch pipe of the thermostat of cooling liquid (21) (see rice. Water pomp, thermostat of cooling liquid, oil heater of the 4-cylinder petrol and diesel engine).
3. To take out a sealing ring (7).
4. To take out the thermostat (21).

Check

PERFORMANCE ORDER
1. To measure the size "an" on the thermostat (see rice. Sizes of the cold and heated thermostat).
2. To warm up the thermostat in a water bathtub. At the same time the thermostat should not concern vessel walls.
3. To control temperature the thermometer. Beginning of opening of the thermostat about 87 °C, end about 102 °C.
4. After heating of the thermostat approximately to 100 °C the size "b" has to exceed the size "a" not less, than on 7 mm.

Installation

PERFORMANCE ORDER
1. To replace a sealing ring, to install the thermostat and to screw a cover, to fill in cooling liquid.
2. To allow the engine to work, the thermostat will not open yet. To check tightness of a cover and hose of cooling liquid.