Outer Circuit Control Lever; Control Of Single-Acting Hydraulic Cylinder - Zetor 8621 Forterra turbo Operator's Manual

OUTER CIRCUIT CONTROL LEVER

Control lever has three positions marked on label.
a - Pressure is in quick-coupler No "1", quick-coupler No "2" is connected with
return line. Lever is moved into its rear margin position. The lever must be
kept in this position otherwise it is automatically turned into neutral position
"b".
b - Neutral position (locked). Outlets of quick-couplers No "1" and "2" are closed
and the oil is blocked in attached hydraulic implement. The lever is
automatically kept by spring in this position.
c - Floating (free) position. Both outlets of quick-couplers No "1" and "2" are
connected with return line and the oil can freely flow in both directions. Lever
is locked by valve ball lock in this position.
d - Pressure in quick-coupler No "2", quick-coupler No "1" is connected with
return line. Lever is moved into its forward margin position. lever must be kept
in this position otherwise it is automatically turned into floating position "c".
HYDRAULIC SYSTEM
114
F 164
CONTROL OF
HYDRAULIC CYLINDER
Single-acting hydraulic cylinder is ever
connected with quick-coupler No "1":
lifting lever is in position "a"
(pressure
coupler No "1„)
lifting finished lever
position "b" - neutral
lowering lever
position "c" - floating
Lowering lever
finished position "b" " neutral
Note: Picture F 165 shows location of
quick-couplers in basic configuration and
configuration with two section SCV.
F 165
SINGLE-ACTING
in quick-
is moved to
is moved to
is moved to