Front Outlets Of The Outer Hydraulic Circuit; Connecting Machines And Implements To The Outer Hydraulic Circuit - Zetor FORTERRA HSX 120 Operator's Manual

Front outlets of the outer hydraulic circuit

On request, the tractor can be equipped with external
hydraulic circuit outlets located at the front.
The quick couplers (5) and (6) are pressurized, the quick
coupler (0) is directly connected to the transaxle area and
are intended for return oil from external hydraulic devices.
If the tractor is equipped with front outlets of the outer hydraulic circuit, the lever F-6-N-5 is
used for their control.
If the tractor is equipped with a three-point hitch, the F-4-N-3 lever is used for its control. Quick
couplers must not be connected at the time of three-point hitch usage connected because they are
pressurized together like front three-point hitch!
After terminating the work with a front three-point hitch for further usage of the section with quick
couplers 3 and 4 with the connection of three-point hitch, it is necessary to lift the arms of the front
three-point hitch to transporting position and the lever of the cock of the front three-point hitch in the
'closed' position.

Connecting machines and implements to the outer hydraulic circuit

Auxiliary machines using oil filling of external hydraulic circuit must be filled with the same
kind of oil, which is recommended for gear system of the tractor! Quick-couplers sockets of an
auxiliary machine need to be properly cleaned before connecting.
Connecting machines and implements consisting of more parts
During work with agricultural machines that consist of more parts (combinators, skids, harrows) and that
have side frames hat are hinged to the central frame and during transport are folded to the vertical position
by separate hydraulic cylinders controlled by the outer hydraulic circuit of the tractor, the folding of the side
frames must always be controlled by the upward (backward) movement of the auxiliary distributor lever. The
'lifting' branches of the cylinders must be connected to quick-couplers '1', '3' or '5'.
Connecting a rotational hydraulic motor
If a rotational hydraulic motor is connected to an outer outlet of the hydraulic system, its return branch must
always be connected to quick-coupler '0'.
Connecting a reversing hydraulic motor
A reversing rotary hydraulic motor must be connected to quick-couplers '1' and '2' for functional reasons.
However, relief valves must be inserted in both the branches in this case as they can reliably limit the
pressure peaks during the stopping of the machine. The oil return lines from these valves are connected to
quick-coupler '0'.
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HYDRAULIC SYSTEM
FHSXS5N013