2.5.4. Pressure testing of the cooling system

The engine has to have working temperature.

Procedure for test
Open a cover of a broad tank of the cooling system.

Fig. 2.215. Installation of a tester with an adepter on a broad tank


Establish a cooling system tester with the adapter on a broad tank (fig. 2.215).
By means of the manual pump of a tester create pressure about 1,0 bars.
If pressure constantly falls, to find and eliminate leakage.

Check of the reducing valve in a cover

Fig. 2.216. Installation of a tester with an adepter on a tank cover


Establish a cooling system tester with the adapter on a cover of a tank (fig. 2.216).
Involve the manual pump.
With an excessive pressure of 1,4-1,6 bars the reducing valve has to open.