Installation Instructions

B1700·B2100·B2400 WSM,11770
[7] HYDRAULIC CYLINDER
8 HYDRAU Lie SYSTEM
11
B177FB12
(1) Lowering Speed Adjusting Shaft
(2) Lowering Speed Adjusting Valve
(3) Hydraulic Cylinder
(4) Relief Valve
(5) Hydraulic Arm
(6) Piston
(7) a-ring
(8) Back-up Ring
(9) Hydraulic Rod
(10) Position Control Valve
(11) LiftArm
The main components of the hydraulic cylinder are
shown in the figure above.
While the lift arm (11) is rising, oil from the
hydraulic pump flows into the hydraulic cylinder
through
the position control valve (10). Then oil
pushes out the piston (6).
While the lift arm (11) is lowering, oil in the
hydraulic cylinder is discharged to the transmission
case through the position control valve (10) by the
weight of the implement. At this tfme, the lowering
8-M7
speed of the implement can be controlled by the
lowering speed adjusting valve (2) attached to the
hydraulic cylinder (3). Turning the lowering speed
adjusting knob
(1) clockwise decreases the lowering
speed, and counterclockwise increases
lowering
speed. When the lowering speed adjusting valve (2)
is completely closed, the lift arm (11) is held at its
position
since oil in the hydraulic cylinder is sealed
between the piston (6) and lowering speed adjusting
valve
(2).