7
3/4-in. (19 mm)
Jam Nut
11 Adjust relief cartridges
For over-pressure protection, the relief valve
cartridges for both the CLAMP and SIDE-
SHIFT functions should be adjusted to
match the truck hydraulic flow rate.
I
NSTALLATION
Sideshift relief adjustment:
EWith a maximum load clamped, sideshift full left
and full right while checking for an arm speed of
8–10 in./sec.
FUsing an Allen wrench, adjust the SIDESHIFT
relief cartridge counterclockwise (CCW) 1/4-turn.
Repeat Steps E and F until sideshift speed slows
(relief opening).
GReadjust cartridge clockwise (CW) 1/4-turn.
Tighten jam nut and replace cap.
CL0435.ill
B
C
NON-SIDESHIFTING VALVE SIDESHIFTING VALVE SIDESHIFTING VALVE
WITH REGENERATION
CL0622.ill
Sideshift Relief CartridgeF
Clamp Relief Cartridge
D
FRONT
E
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.
CL0623.ill
Relief Valve
Cartridge
Increase
Pressure
(CW)
Decrease
Pressure (CCW)
5/16-in. (8 mm)
Allen Wrench
Adjustment
Screw
Cap
Clamp relief adjustment:
AConfirm that the truck pressure is
between 2300–2600 psi (160–180 bar)
at the carriage hose terminal.
BInstall a 3000-psi (200 bar) pressure
gauge on the test port of the main valve.
(No. 4 O-ring fitting required).
CCycle arms to full open. Slowly close
arms while clamping a maximum rigid
load (or clamp force indicator). Hold the
lever in the CLAMP position and acceler-
ate the engine to develop full pressure.
DAdjust the CLAMP relief cartridge for an
indicated 2300 psi (160 bar). Turn
clockwise to increase pressure, counter-
clockwise to decrease. Tighten jam nut
and replace cap.
3/4-in. (19 mm)
Jam Nut
C
