4.9. Radiator cover
1 – the valve of excessive pressure – opens with a pressure of 81,4-108 kPa;
2 – radiator cover; 		3 - spring;
4 – spring of the vacuum valve; the vacuum valve opens at depression minus 6,86 kPa.

Valve check of excessive pressure
PERFORMANCE ORDER
1. Remove all foreign particulates from the valve and a saddle of the valve of a cover of a radiator.
2. Fix a radiator cover on the test device for check of a cover of a radiator. Create pressure of 81,4 kPa.

Pressure of opening of the valve of excessive pressure: 81,4–108 kPa
Minimum pressure of opening of the valve of excessive pressure: minus 6,86 kPa

3. Through 10 with check pressure which should not change.
4. If necessary, replace a radiator cover.

Valve of the vacuum valve
PERFORMANCE ORDER
1. Check absence of damage of a spring and the interfaced surfaces of the valve.
2. You will pull the valve of the return pressure for its opening. Make sure that at an otpuskaniye the valve is completely closed. Fix a radiator cover on the test device for check of a cover of a radiator.
3. Create depression, before its stabilization.
4. Through 10 with check pressure which should not change.