Connection Of Machines And Implements To Hydraulic Outer Circuit - Zetor 86 41 forterra turbo Operator's Manual

HYDRAULIC SYSTEM
CONNECTION OF MACHINES AND IMPLEMENTS TO HYDRAULIC OUTER
CIRCUIT
Connection of machines and implements combined from more parts
Tractors equipped with mechanical control of hydraulic
Agricultural machines that are combined from more parts (combinators, skids, and
harrows), are often equipped with outer frames which are hinged to the middle fra-
me. This configuration needs to control folding of outer frames. These outer frames
are folded by independent hydraulic cylinders. For folding, cylinders are connected
with outer circuit of tractor hydraulic. When working with such implement it is neces-
sary to control folding of outer frames by raising the control lever of outer circuit
upward. Moving the control lever upward ensures that the pressure oil in quick-
coupler "1" lifts frames to vertical (transport) position. Quick-coupler "2" is connected
with drain.
Tractors equipped with selective control valve
When operating the agricultural machines assembled of more components (cultiva-
tors, clod crushers, harrows, and the like), in which outer frames are hinged at the
inner frame, and should be raised – during the transportation - to the vertical position
by the action of separate hydraulic cylinders controlled by the tractor outer hydraulic
circuit, the tilting of outer frames has to be controlled with moving the additional dis-
tributor lever upwards (rearwards). The "lifting" branches of cylinders have to be
connected to th quick couplers "2", "4" or "6".
Connection of rotary hydromotor
If the rotary hydromotor is connected with hydraulic outer circuit, the oil return line
must be connected with quick-coupler "0".
Connection of reversible hydromotor
If the reversible hydromotor is used the oil lines must be connected with quick-
couplers "1" and "2". In this case both lines must be equipped with relief valves
which will limit the pressure peaks when stopping the machine. The oil return line
from these valves is connected with quick-coupler "0".
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