9.3. Pumping of a hydraulic actuator of brake system

Hydraulic actuator of brakes pump over for removal of the air which has got there at filling with liquid after its replacement or after repair of knots of a hydraulic actuator, connected with its depressurization.

Signs of availability of air in a hydraulic actuator:

– increase in a course of a pedal, its "softness" by single pressing a pedal;

– gradual reduction of a course of a pedal with simultaneous increase in its "rigidity" by repeated pressing a pedal.

Before pumping of a hydraulic actuator it is necessary to find and eliminate the depressurization reason.

Good advice If pumping of a hydraulic actuator is connected with repair of any one contour and serviceability of other contour is obviously known, pumping only a repaired contour is admissible.

Actions when pumping hydraulic actuator same, as well as at replacement of the brake liquid described in section 4 "Maintenance" (see. «Replacement of brake liquid in a hydraulic actuator of brakes»). Distinction consists only that criterion of completion of pumping of the working cylinder is the termination of an exit of vials of air from a hose, instead of emergence of more freshly brake liquid.