Zetor PROXIMA PLUS 90 2012, Operator'S Manual

Page: 64 / 212

63
DRIVING
G221 E222 G223
DIFFERENTIAL LOCK
The differential can be locked by press-
ing a switch that returns back to its origi-
nal position after it is released.
Locking of the differential is indicated by
an illuminated symbol on the switch.
Depressing of the brake pedals unlocks
automatically the differential.
Do not use the differential lock
when driving through road bends.
CONTROL OF FRONT DRIVING AXLE
The front driving axle is engaged in the
basic position.
Engagement of the front driving axle is
indicated by an illuminated symbol on
the switch.
It can be disengaged using a switch on
the dashboard.
a - Front driving axle engaged
b - Front driving axle disengaged
In case of a drop of air pressure
in the compressed air system of
the tractor the front driving axle is
engaged automatically.
DRIVING WITH ENGAGED FRONT
DRIVING AXLE
Use the front driving axle with
slipping of the rear wheels to in-
crease the traction force of the
tractor. It is permitted to engage
the front driving axle on roads
and hard surfaces up to 15 km/h
(travel with engaged front driving
axle causes increased wearing of
front tyres).
Permanent engagement of the front driv-
ing axle is permitted if there is a farming
mechanism attached to the front sus-
pension. This condition is mentioned in
the instructions manual to the respective
mechanism.
Maximum permitted speed when driving
with these attachments is 15km.h
-1
.