Zetor PROXIMA HS Series, Operator'S Manual

Page: 88 / 212

The principles of appropriate use of tractors
The listed principles for tractor´s operation serve for facilitating the operation and guarantee
corresponding service life of travel clutch!
The description of the system of travel clutches
The tractor is equipped with two individual travel clutches, one for travelling forward and one for travelling
backward.
The selection of the driving direction and also the choice of a specific travel clutch is done by shifting the
reversing lever under the steering wheel from neutral position to the position forward or backward.
The way of controlling the travel clutch by
1 - Reversing lever
2 - Clutch control button on the head of reversing lever
3 - Clutch pedal
The differences in ways of controlling the travel clutch by
1 - Reversing lever
This way of control has automatic start function.
When shifting the reversing lever to neutral position, there is release of travel clutch.
When shifting the reversing lever to the forward or backward position, there is a switch of travel clutch and
subsequent smooth dead start of the tractor in the direction defined by reversing lever.
The speed of switch of travel clutch and the smoothness of dead start is controlled by a controlling
unit on the basis of information saved in calibration and the operators cannot influence it.
Automatic dead start function is sparing to travel clutches than the control of travel clutches
by clutch pedal, therefore use the ways of controlling travel clutch with the function of automatic
dead start for the regular operation of tractor with dead start, gear shifting or the change of the
driving direction.
2 - Clutch control button on the head of gear shifting lever
This way of control has the function of automatic switch of travel clutch.
When pressing the button of clutch control on the head of gear shifting lever there is release of travel clutch.
When releasing the red button of control clutch on the head of gear shifting lever, there is a switch of travel
clutch.
The rate of travel clutch switch is controlled by electronic control unit on the basis of information saved with
calibration and the operator cannot influence it.
3
-
Clutch pedal
When depressing the clutch pedal, there is release of travel clutch.
When releasing the clutch pedal, there is a switch of travel clutch.
The speed of travel clutch switch is dependent on the speed of releasing the clutch pedal.
The clutch pedal does not enable the function of automatic dead start and operators influence the speed and
smoothness of dead start.
Use the clutch pedal only for stopping the tractor in regular operation.
For the need of delicate inching, for example when connecting tools or when manipulating
with the tractor in crammed spaces, when even the reduced gear speeds are not slow enough, use
the clutch pedal for short time.
It is forbidden to control the speed of tractor by partial depression of the clutch pedal with
engine revolutions higher than 1200 revolutions per minute. Do not use the clutch pedal as a foot
rest. There is a danger of limiting service life or failure of travel clutches.
OPERATION
87