Zetor PROXIMA PLUS 8541, Operator'S Manual

Page: 97 / 223

97
HYDRAULIC SYSTEM
E409 E410
HYDRAULIC OUTER CIRCUIT
The hydraulic outer circuit delivers the
pres-sure oil into hydraulic implements
connected to hydraulic outer outlets
equipped with quick couplings.
Quick coupling sockets have inner
diameter 12.5 mm and correspond to
ISO international recommendation.
OUTER CIRCUIT CONTROL LEVER
The lever has three positions marked on label:
a - Pressure is in quick coupling "1", quick coupling "2" is connected with return
line. Lever is moved into its rear margin position. The lever must be held in
this position; otherwise it is automatically moved into position "b" (neutral).
b - Neutral position (locked). Outlets to quick couplings "1" and "2" are closed and
oil flow in attached hydraulic implement is blocked. The lever is automatically
held in this position by spring.
c - Floating (free) position. Both quick couplings "1" and "2" are connected with
return line and oil can freely flow in both directions. The lever is locked in this
position by ball lock, which is situated in the slide valve.
d - Pressure in quick coupling "2", quick coupling "1" is connected with return line.
Lever is moved into its forward margin position. The lever must be held in this
position; otherwise it is automatically turned into position "c" (floating position).