4.2.10. Check of tightness of hoses and connections of the cooling system

For the prevention of sudden failure of the system of cooling of the engine at each maintenance carefully check a condition of all hoses and their connections. Replace hoses new if there is the slightest doubt in their suitability.
According to the recommendation of manufacturer to replace cooling liquid follows through 75 thousand km of a run or 5 years of operation (depending on what will come earlier).
1. Open a cowl and examine podkapotny space. At survey of the engine pay attention to availability of cooling liquid in a broad tank, check a state and tightness of connections …
2. … hoses to branch pipes of a broad tank …
3. … the top bringing hose and a steam discharge hose of a radiator …
4. … hoses of heating of a throttle branch pipe …
5. … the hoses established on the thermostat case …
6. … the bringing and taking away heater radiator hoses.
In case of leak of cooling liquid replace worm clamps of fastening of hoses.

Useful tips
The burst hose can be restored temporarily by means of an adhesive tape.
Especially well the reinforced adhesive tape (for example, silvery color) which can be got in autoshops is suitable for this purpose.
In a stopper of a broad tank the final valve is installed. The valve plays an important role in providing optimum temperature condition of the engine. It supports the excessive pressure not less than 0,12-0,13 MPas (1,2–1,3 kgfs/cm2) in system, providing temperature increase of the beginning of boiling of cooling liquid and preventing intensive steam formation. Unfortunately, when jamming the valve in a closed position at an overheat there is considerable excess of excessive pressure — more than 0,2 MPas (2 kgfs/cm2) that can lead to a rupture of a broad tank or failure of one of hoses. In turn, jamming of the valve in open situation leads to premature boiling of cooling liquid.
Therefore once a year wash out a stopper of a broad tank flowing water, and check the valve for lack of jamming. If there were doubts, replace a stopper.