Automatic Axle Lock Control Of Rear And Front Axle; Suspension Front Drive Axle - Zetor CRYSTAL Series Operator's Manual

DRIVING OPERATION

Automatic axle lock control of rear and front axle

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The engagement of axle locks of rear and front drive axle in automatic mode is done by pressing a button
which returns to its initial position after release. The disengagement of this function is done by a repeated
pressing of the button.
The engagement of the axle locks is signalized by a lit symbol on the switch and a symbol on the display of
the dashboard.
Automatic mode of axle locks control
Automatic mode of axle locks control lies in disengagement of axle locks if any of the following situations
occur:
1. the angular displacement of front wheels is greater than 15°, if the angular displacement of front wheels
changes to smaller than 15°, axle locks turn on automatically
2. arms of the rear three-point hitch are heaved in a position, in which the PTO shaft clutch is automatically
disconnected (for more see DRIVE OF AGRICULTURAL MACHINES chapter), when lowering the arms of
the rear three-point hitch, the axle locks get engaged automatically
3. travel speed is higher than 15 km/h, with lowered travel speed the axle locks are not engaged
automatically and it is necessary to turn them on by pressing a button
The switch from automatic to manual mode can be done by pressing the manual mode button.
Disengagement of axle locks is to be done by pressing the button auto again or by depressing a brake pedal.

Suspension front drive axle

Tractors can be equipped with a suspension front drive
axle upon request.
Suspension drive axle control buttons (1) and (2) are
located on the panel in the area of the right rear
mudguard.
Button (1) serves for setting the suspension mode of front
drive axle.
Button (2) serves for height adjustment of the front part of
the tractor.
If travelling speed of the tractor is higher than
13 km/h, front drive axle transfers automatically to
automatic mode where the axle is automatically kept
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in approximately half of the suspension heave.
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