Connecting Machines And Tools To External Hydraulic Circuit; Control Of The Front 3-Point Hitch - Zetor MAJOR HS Series Operator's Manual

Connecting machines and tools to External hydraulic circuit

Connection of the double-acting cylinder
Always connect the double-acting cylinder to quick couplers of one section.
Connection of machines and tools assembled from more parts
While working with machines assembled from more parts (combinators, levellers and harrows) where
extreme frames tilted during transport to the vertical position with individual hydraulic cylinders controlled by
the outer circuit of the hydraulics are articulated to the central frame, it is suitable to connect the lifting
branches of cylinders to quick couplers (2) or (4) that are equipped with the return valve.
Connection of the rotation hydro engine
If the rotation hydro engine is connected on the outer outlet of the hydraulics, its reversible branch must
always be connected to quick couplers (0).
Connection of the reversing rotation hydro engine
By reason of its function, the reversing rotation hydro engine must be connected to quick couplers of one
section. When the hydro engine is connected, safety valves that reliably reduce pressure peaks during
machine run-out must be added to both branches. The waste from these valves is connected to the quick
coupler (0).
The trailer machines utilizing the oil filling of the outer hydraulic circuit must be filled with the
same type of oil which is recommended for the transmission system of the tractor!
Quick coupler plugs of the trailer machines must be thoroughly cleaned before connection.

Control of the front 3-point hitch

The hitch is equipped with two single-acting hydraulic
cylinders, into which the oil is supplied from the auxiliary
hydraulic distributor. The lifting and lowering is performed
by the control lever (a) of the auxiliary distributor.
position 1 lifting
position 2 lowering
position N hitch locking
position P do not use it
If the tractor is equipped with the front three-point hinge, the lever (a) is used for its control.
The quick couplers must not be connected when the front three-point hinge is used because they are
pressed together with the front three -point hinge!
After work with the front three-point hinge, the arms of the front three-point hinge must be lifted to
the transport position and the lever of the cock of the front three-point hinge must be moved to the
'closed' position.
HYDRAULIC SYSTEM
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