Zetor FORTERRA HSX Series, Operator'S Manual, Page: 107 / 222

Automatic mode of differential lock control
The automatic differential lock control mode is to disconnect the differential lock if one of the following
situations occurs:
1. The rear three-point hitch arms are lifted to the position where the PTO shaft clutch is automatically
disconnected (see chapter AGRICULTURAL MACHINE DRIVE), when starting the arms of the rear three-
point hitch to the position where the rear PTO shaft clutch is automatically connected, the differential lock
automatically switches on
2. Travel speed exceeds 15 kph, the differential lock will not be automatically switched on when the drive
speed is drops below and must be switched on by pressing the button. Switching from automatic to manual
mode can be done by pressing the manual mode button.
To deactivate the differential lock, press the AUTO button again or depress one of the brake pedals.
Manual brake - signalization
Driving up the slope
Driving down the slope
If the tractor is not braked by a manual brake, a warning is
displayed on a display (a letter P in a circle) and at the
same time there is a sound signal.
This situation occurs in two cases
a - a tractor unbraked by a manual brake with engine
running and a driver leaves its seat
b - a tractor unbraked by a manual brake standing with
engine off and the key is shifted in '0' position.
Brake the tractor with a manual brake.
F18N031
Shift from higher to lower gear in time when
driving up the slope not to have a drop in engine
revolutions under 800 revolutions per minute, do not
allow a drive leading to the engine stop due to
overload.
F11N020
Driving down the slope without engaged gear
speed is forbidden. If you travel from a longer slope,
shift the lower gear speed the steeper the slope is.
Shift the lower gear speed before the slope, if
possible.
Note: The gear speed with which you easily overcome an
ascent, you will also successfully manage descent.
F11N021
DRIVING OPERATION
106