6871082-R2
9
INSTALLATION
CL6226.eps
CC0040.eps
WARNING
: Before removing hydraulic
lines or components, relieve pressure
in the hydraulic system. Turn the truck
off and open the truck auxiliary control
valves several times in both directions.
CLAMP
Relief
Cartridge
D
B
SIDESHIFT
Supply
Adjust Relief Cartridges
The valve is equipped with relief valve cartridges in both
the SIDESHIFT and CLAMP circuits. Adjustment of these
reliefs is recommended to optimize clamp performance.
NOTE:
External Sideshift function has no relief adjustment.
CLAMP Relief Adjustment – Pressure Gauge Method
The CLAMP relief cartridge is set at the factory per the
pressure specified on the label on the back of the valve.
The CLAMP relief cartridge is set at the factory with a
system back pressure of 350 psi (24 bar). Actual back
pressure with the attachment connected to the truck will
vary. It is recommended to verify the CLAMP pressure as
an initial starting point.
A
Confirm that
TRUCK
pressure delivered to the
attachment valve is within the range shown on the
attachment nameplate.
B
Install a 5000 psi (345 bar) pressure gauge (with a No.
4 O-ring fitting) to the valve gauge 'G' port.
C
From fully open, close the arms at normal speed
to clamp a rigid load, clamp force indicator or fully
bottom cylinders. Release truck handle and read
pressure gauge. Compare gauge pressure with valve
label pressure.
D
Adjust the
CLAMP
relief cartridge to correct pressure.
Open arms to release clamp pressure. Turn clockwise
(CW) to increase pressure, counterclockwise (CCW) to
decrease pressure.
E
Repeat steps
C
and
D
to confirm setting. Tighten jam
nut.
NOTE:
When adjusting a CLAMP equipped with a three
position regulator valve, Volumetric Force Control (VFC)
or Hydraulic Force Control (HFC), the CLAMP relief must
be adjusted to maximum pressure. Refer to step D to
increase pressure. Adjust the cartridge to the maximum
position.
NOTE:
Adjustment of CLAMP relief pressure according
to load requirements for secure handling and damage
reduction is recommended. Adjust the relief cartridge per
step
A
–
E
to obtain a desired pressure setting. Pressure
is not to exceed the maximum pressure setting on the
attachment nameplate. If multiple pressure settings are
desired, contact Cascade for options.
EXTERNAL
SIDESHIFT VALVE
RH CLAMP Ports
LH CLAMP Ports
11
B
D
D
Increase
Pressure
(CW)
Decrease
Pressure
(CCW)
CLAMP
Relief
Cartridge
CLAMP
Relief
Cartridge
D
CLAMP
Supply
SIDESHIFT
Supply
CLAMP
Supply
CLAMP
Supply