Kubota BX1880-AU, Operator'S Manual

Page: 68 / 110

Hydraulic outlet ports of first segment
Lever Backward Forward
Port
White In Out
Yellow Out In
Pressure
Returning
Hydraulic outlet ports of second segment
Lever Right Left
Port
Blue In Out
Red Out In
Pressure
Returning
1. Connect the auxiliary-hydraulic-control-lever in its
specified direction and the hydraulic hoses to their
specified ports.
2. Before moving the auxiliary-hydraulic-control-lever,
make sure that the hydraulic hoses for attachments
are connected.
3. Move the auxiliary-hydraulic-control-lever diagonally
(forward left, forward right, and backward right as
shown in the figure).
The first and second segments can be controlled at
once.
IMPORTANT :
To avoid damage of the attachments:
• Do not connect attachments through the
hydraulic motor to the blue port and the red
port. If the auxiliary-hydraulic-control-lever
is moved to the regeneration (right) position,
the seals on the hydraulic motor will be
damaged.
• This control valve is provided with the
regeneration (right) position. When the blue
port and the red port are used to take off
hydraulic power for the hydraulic cylinder,
be sure to connect the blue port to the head-
end side port of the hydraulic cylinder.
• Make the following connections when using
this control valve to take off hydraulic power
for the hydraulic cylinder.
Colored Coupler Hydraulic Cylinder port
Blue and yellow Head-End side
White and red Rod-End side
NOTE :
• If you move the auxiliary-hydraulic-control-
lever to the float position, it will be held
there by the detent mechanism. To use the
valve as a floating valve with detents,
connect the hydraulic hoses to the white
port and the yellow port.
4. Controlling loader (only if
equipped with loader)
• When moving the auxiliary-hydraulic-control-lever
forward, the loader will go down.
• When moving the auxiliary-hydraulic-control-lever
backward, the loader will go up.
• When moving the auxiliary-hydraulic-control-lever
to the left, the bucket will roll back.
• When moving the auxiliary-hydraulic-control-lever
to the right, the bucket will dump.
• When moving the auxiliary-hydraulic-control-lever
diagonally, the loader and bucket will work in the
same time.
(A) Float
(B) Down and roll back
(C) Down
(D) Dump and down
(E) Roll back (F) Dump1
(G) Normal position
(H) Up
(I)
Up and dump
Lower
When lowering the loader, there are 2 stages that
operate the loader differently.
• Down
When shifting the auxiliary-hydraulic-control-lever
forward, the loader will go down with hydraulic
pressure. This lever position is the first stage for
lowering the loader.
• Float
When shifting the auxiliary-hydraulic-control-lever
further forward until feeling the bump, pressure in
HYDRAULIC UNIT AUXILIARY HYDRAULIC CONTROL VALVE
64
BX1880, BX2380, BX2680