Cascade E-Series - Relief Valve Cartridge Adjustment

36 215204 Rev. 1
ERVICE
S
5.3-4 Relief Valve Cartridge
Adjustments
NOTE: For optimum performance, the relief valve
cartridges for both the CLAMP and SIDESHIFT functions
should be adjusted to match the truck hydraulic flow rate.
MAXIMUM RELIEF VALVE SETTING = 2600 psi (180 bar).
Clamp relief adjustment:
1 Confirm that truck pressure is between 2300–2600 psi
(160–180 bar) at the carriage hose terminal.
2 Install a 3500-psi (240 bar) pressure gauge on the main
Valve TEST port (No. 4 O-ring fitting required).
3 Cycle arms to full open. Slowly close arms while clamp-
ing a maximum rigid load (or clamp force indicator).
Hold lever in the CLAMP position and accelerate engine
to develop full system pressure.
4 Adjust the CLAMP relief cartridge for an indicated 2300
psi (160 bar). Turn clockwise to increase pressure,
counterclockwise to decrease pressure. Tighten jam nut
and replace cap.
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.
CL0435.ill
2
3
5
CL0622.ill
Sideshift Relief
Cartridge
Clamp Relief
Cartridge
F
CL0623.ill
Relief Valve
Cartridge (typ.)
Increase
Pressure
(CW)
Decrease
Pressure (CCW)
5/16-in. (8 mm)
Allen Wrench
Adjustment
Screw
Cap
4
6
NON-SIDESHIFTING VALVE SIDESHIFTING VALVE
SIDESHIFTING VALVE
WITH REGENERATION
3/4-in. (19 mm)
Jam Nut
Sideshift relief adjustment:
5 With a maximum load clamped, sideshift full left and full
right while checking for an arm speed of 8–10 in./sec.
6 Adjust the SIDESHIFT relief cartridge counterclockwise
(CCW) 1/4-turn. Repeat Steps 5 & 6 until sideshift
speed slows (relief opening).
7 Readjust cartridge clockwise (CW) 1/4-turn. Tighten
jam nut and replace cap.