Bleeding The Hydraulic Brakes Of Trailer - Zetor PROXIMA PLUS 8541 Operator's Manual

4. BLEEDING THE HYDRAULIC BRAKES OF TRAILER

Bleed the system in the following way:
1. Add the missing volume of the brake fluid into the equalizing tank up to maximum
level.
2. Remove the cap from the bleeder screw (2) of the hydraulic trailer control valve (1)
located at the left-hand front support of the cab silent-block.
3. Slide a hose on the screw and put the hose other end at the bottom of a transpar-
ent bowl (3) partially filled with the brake fluid. Place the bowl minimally 300 mm
above the bleeder screw. The bleeder screw must be permanently under pressure
to avoid aerating of the brake system through the screw threads.
4. Loosen the bleeder screw maximum by 1/4 turn.
5. Fully depress the latched brake pedals and tighten the adjusting screws.
6. Release the brake pedals and repeat the procedure, until air bubbles cease es-
caping from the hose.
ADJUSTMENT
192
E762