2.1.5. Check of tightness of the cooling system

Uncover a radiator.
Make sure that the level of cooling liquid reaches a bulk mouth of a radiator.

Fig. 2.5. Connection of a tester for valve check of a cover of a radiator


Connect a tester for valve check of a cover of a radiator to a bulk mouth of a radiator and create pressure of 140 kPa. Keeping the specified pressure within 2 min., check lack of leak of cooling liquid from a radiator, connections of hoses or hoses of the cooling system (fig. 2.5).

NOTE
Cooling liquid can be extremely hot. Do not uncover a radiator as it will lead to emission of steam and spraying is hotter or the boiling liquid and can become the reason of traumatizing service personnel. Get to work with the cooling system only after cooling of the engine.

Carefully remove moisture from a surface of all details checked for lack of leaks.
At extraction of a tester for valve check of a cover of a radiator from a mouth of a radiator try not to allow spraying of cooling liquid.
At connection and a detachment of a tester, and also during conducting check be careful not to deform a bulk mouth of a radiator.
In the presence of leaks repair or replace the corresponding detail.