4.3.6. Check of hoses and connections of the cooling system

1. Open a cowl and examine podkapotny space. At survey of the engine pay attention to availability of cooling liquid in a broad tank, to an integrity of rubber hoses, a radiator …	2. … and thermostat covers.

    

GOOD ADVICE 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.

At dribble of cooling liquid from under a cover of the thermostat tighten bolts of its fastening. If tightening of bolts did not succeeded to eliminate dribble, then it is necessary to uncover, clear privalochny surfaces and to establish on sealant.

3. Examine connections of the bringing hose with a radiator …	4. … and with a thermostat cover...

5. … connections of the taking-away hose with a radiator branch pipe …	6. … and with a water distribution pipe.

7. Examine connections of hoses of the cooling system with heater radiator branch pipes...	8. … bringing …

9. … and taking away unions of throttle knot. In case of dribble of cooling liquid replace collars of fastening of hoses.

    

USEFUL TIPS In a stopper of a broad tank two valves are installed: inlet and final. The final valve plays a large role in providing optimum temperature condition of the engine. It supports the excessive pressure not less than 0,13-0,15 MPas (1,3–1,5 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 0,15 MPas (1,5 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 sticking by pressing by the thin screw-driver. If there were doubts, replace a stopper.