Abstract: A method for determining a functioning of a gas bleed valve in a primary reservoir for a medium for a hydraulic system includes connecting a testing apparatus with a separate reservoir of the medium to the primary reservoir; pumping the medium from the separate reservoir to the primary reservoir; measuring the volume of the medium pumped from the separate reservoir to the primary reservoir; and determining the functioning of the gas bleed valve by comparing the volume of the medium pumped to the primary reservoir with: a change of the medium volume measured in the primary reservoir, or a change of the pressure of the medium pumped to the primary reservoir.

Abstract: The invention relates to a method for determining a functioning of a gas bleed valve in a primary reservoir for a medium for a hydraulic system. The method comprising: connecting a testing apparatus with a separate reservoir of the medium to the primary reservoir; pumping the medium from the separate reservoir to the primary reservoir; measuring the volume of the medium pumped from the separate reservoir to the primary reservoir; and, determining the functioning of the gas bleed valve by comparing the volume of the medium pumped to the primary reservoir with: a change of the medium volume measured in the primary reservoir, or a change of the pressure of the medium pumped to the primary reservoir.