Pneumatic Parking Brake - PRONAR T900 Operator's Manual

SECTION 3 Pronar T900

3.2.9 PNEUMATIC PARKING BRAKE

The parking brake is used for immobilising trailer while standing motionless. The parking
brake is activated by loosening-parking valve (1) – figure (3.18). Two push-buttons located in
this valve make it possible to set the trailer to an appropriate working mode. Black push-
button (2) controls the loosening valve, that is designed for releasing or engaging the brake if
the trailer is unhitched from the tractor. There is no possibility of pressing this push-button if
pneumatic connections are connected to tractor.
Red push-button controls operation of parking valve. In the trailer that is correctly hitched to
the tractor by means of connections (red and yellow), the black push-button of the loosening
valve should be pulled out. Braking of the trailer wheels is carried out by pulling out the red
push-button (3).
FIGURE 3.18 Loosening-parking valve
(1) loosening-parking valve, (2) black push-button, (3) red push-button, (4) information plate
3.23