Two-Hose Brakes; Hydraulic Brakes Of Trailers; Connecting And Disconnecting Quick Couplings Of Trailer Hydraulic Brakes - Zetor Proxima GP Series Operator's Manual

Two-hose brakes

Operating pressure is adjusted with the control valve at
740 ± 20 kPa. Capacity of air tank is 20 l.
The valve of the left head is labelled in yellow (braking
branch), the valve of the right head is labelled in red (filling
branch).
When connecting the trailer (articulated trailer)
with a maximum permitted speed approved for the
type of tractor, the maximum permitted speed of set is
40 km per hour!
Maximum permitted speed of set is given by maximum
permitted speed of the slower vehicle of the set.

Hydraulic brakes of trailers

Connect hydraulic brakes of trailer or articulated
trailer to the quick couplings marked by an arrow.
Control of hydraulic brakes of trailers (articulated trailers)
and control of tractor brakes is done so that the braking
effect of both vehicles is synchronized. Working pressure
is derived by oil supplied by non-switched on/switched off
gear pump of hydraulics. Brake valve of the trailer is done
by the pressure of brake fluid from main braking rollers
depending on the force effecting on the brake pedal. The
pressure on clutch head must be 12 - 15 MPa with
maximum depression of brake pedal. Brake valve of trailer
prefers the function of brakes to the function of hydraulics.
If there are shocks when foot brake pedals are depressed
in the pipeline of hydraulic circuit, it is necessary to bleed
the hose from the brake valve to the quick coupling.
When driving with connected trailer or
articulated trailer, the pedals of foot brake must be
connected and secured by a valve! When braking with
one brake pedal, hydraulic brakes of the trailer are not
active.

Connecting and disconnecting quick couplings of trailer hydraulic brakes

When connecting and disconnecting quick couplings, take increased care with regard for
remaining oil which remains in the socket or in the plug of quick coupling. For ecological reasons, it
is necessary to remove this remaining oil after every disconnection of quick couplings with any
textile material.
DRIVING
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P11NX229
P11NE231