Hydraulic Trailer Brakes - Zetor 3321 SUPER Operator's Manual

HYDRAULIC TRAILER BRAKES

Hydraulic trailer brake control is synchronized with braking the tractor including the
braking effect. Working pressure is activated by oil pressure from hydraulic pump.
The hydraulic valve BOSCH (1) is used in circuit of hydraulic pump (disengageable
pump). The pressure in the brake coupling must be 12 - 15 MPa at maximal press on
the brake pedal. Trailer brake valve prioritizes the brake function to hydraulic control.
Brake pedals must be connected and secured by latch when driving the
tractor with attached trailer.
HYDRAULIC TRAILER BRAKES
A 74a