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The hydraulic system is intended for lifting and lowering of agricultural machines and implements attached in
the rear three point hitch.
Hydraulic equipment
Is made up from internal and external circuit. The source of pressure oil is gear pump.
Oil is taken from common filling of gearbox and final drive housing. Hydraulic pump is unswitchable. Pump is
in operation with engine running. Supplied amount 50 l/min.
The pressure derived in hydraulic set by hydraulic pump is limited by a locking valve to 18 MPa.
Hydraulic control panel
Hydraulic control panel is placed in the area of right
fender.
External hydraulic circuit (A) enables control of external
hydraulic circuit (quick-couplers).
Internal hydraulic circuit (B) enables rear three-point
linkage control.
Means of internal hydraulic circuit regulation
Hydraulic system enables three means of heave three-point linkage control. Position regulation (fig.1) where
some tools connected in three-point linkage are kept automatically at constant height (position) to tractor.
Mixed regulation (fig. 2) which is the combination of position and power regulation. It is suitable mostly for
tillage on lots with different soil resistance. Power regulation (fig. 3), with which tools connected in three-point
linkage are automatically vertically adjustable depending on the change in soil resistance. All means of
regulation enable also work with tools which has supporting wheel in the so-called free (floating) position.
Internal hydraulic circuit control elements
1. Lever for setting power or position regulations
2. Lever for setting floating position, height positioning of
three-point linkage with position regulation or mixed
regulation
3. Speed of three-point linkage lowering control
4. Hydraulic sensitivity system control
HYDRAULIC SYSTEM
NM13N101
57
NM13N009
NM13N010
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