Zetor PROXIMA PLUS 8541, Operator'S Manual

Page: 96 / 223

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HYDRAULIC SYSTEM
E407 E408
SELECTION LEVER OF CONTROL MODE
The lever has three positions marked P, M or D
P - This marks the position control, at which the implement attached to the
three-point hitch is automatically kept in constant height (position) with
regard to the tractor.
M - This marks the mix control, which is a combination of position and draft
controls. This is suitable especially for ploughing at soils with variable soil
resistance.
D - This marks draft control, at which the implement attached to the three-point
hitch is automatically readjusted depending upon the soil resistance change.
All modes of control enable also work with implement having a supporting wheel in
the so-called free (floating) position.
The selection lever of control mode must be moved into P position during
transport of the implement!
RESPONSE RATE CONTROL LEVER
The lever controls the hydraulic valve in
the distributor, which distributes the oil
flow to inner and outer circuit.
The oil flow in inner circuit is minimum, if
the lever is moved in the direction (MIN)
from the driver’s seat.
By the oil flow restriction at draft or mix
control the hydraulic system response
rate is reduced, for example when
ploughing under variable soil conditions.