Zetor PROXIMA PLUS 90 2012, Operator'S Manual

Page: 182 / 212

181
ADJUSTMENTS
E762
4. BLEEDING OF HYDRAULIC BRAKES OF THE TRAILER
Carry out bleeding as follows:
1. Refill missing volume of brake fluid in the expansion tank to the maximum.
2. Remove the cap on the bleeding screw (2) of the trailer hydraulic brake valve (1)
that is located on the left front bracket of the cabin silentblock.
3. Slide a hose onto the bleeding screw (2) of the brake cylinder after prior removal
of a rubber cap from the screw and sink other end of the hose to the bottom of a
transparent container filled partly with brake fluid (3). Put the container at least
300mm above the bleeding screw. The bleeding screw shall be still under pres-
sure to prevent penetration of air into the system through its threads.
4. Release the bleeding screw max. by 1/4 of turn.
5. Tread on coupled brake pedals up to their stop and tighten the bleeding screws.
6. Release the brake pedals and repeat the procedure until air bubbles stop escap-
ing from the hose.