Of The Shifting Lever When The Foot Brakes; Air Brakes Of Trailers And Semi-Trailers; During Normal Operation And Be-Warning Indication Of Air Pressure Drop - Zetor PROXIMA PLUS 90 2012 Operator's Manual

FOOT BRAKES
The foot brakes are disk wet type, hy-
draulic-controlled, with two pedals and
automatic pressure balancer.
During travel both pedal have to
be coupled with a latch. Use un-
coupled pedals for barking of the
right or left wheel only when
working in terrain and on a field
at low travel speeds.
Note: When driving from a steep
downslope with a trailer or semi-trailer
equipped with air or hydraulic brakes it is
necessary to start braking by foot brake
already from beginning of the slope!
With braking by one brake
pedal the trailer brakes are not
activated!
DRIVING
E224
AIR BRAKES OF TRAILERS AND
SEMI-TRAILERS
Air brakes of trailers (semi-trailers) and
brakes of the tractor are designed so that
braking effects of both vehicles are syn-
chronised.
When driving with a trailer or
semi-trailer the foot brake pedals
shall be coupled and secured by
a latch!
With braking by one brake
pedal the trailer air brakes are
not activated.
Note: In case of a drop of pressure the
transfer valve disables the secondary
consumers (differential lock, disengage-
ment of the front driving axle).
64
G225
WARNING INDICATION OF AIR
PRESSURE DROP
Decrease of air pressure under 450kPa
is indicated by a red lamp and red sym-
bol of a tractor with a sign STOP on the
dashboard.
In case of a pressure drop in the
compressed air system under
450kPa the tractor with braked
trailer or semi-trailer may not
travel until air pressure increases.
G226