Labrie ALLEY -GATOR RIGHT-HAND, Maintenance Manual

Page: 90 / 108

80 Maintenance
Working Sections of the Arm & Body Directional
Control Valve
The directional control valve consists of working sections, each individually devoted to two hydraulic
functions (Figures 3-56 and 3-57). Each section has outlet ports with secondary relief valves, each
one functioning with different working pressures. The correct pressure settings are outlined below:
Figure 3-54 Arm and body directional valve (part 1)
Figure 3-55 Arm and body directional valve (part 2)
The individual working section secondary relief valves should not require adjustment. However,
should adjustment become necessary, individually operate each hydraulic function and adjust the
relief screw until the correct pressure is obtained.
Slide
In - 2000 psi
Out - 2000 psi
Arm
Down - 2000 psi
Up - 2000 psi
Grabber
Open - 1200 psi
Close - 1200 psi
Crusher panel
(optional)
Up - 2500 psi
Tailgate
Down - 2500 psi
Up - 2500 psi
Body hoist
Down - 500 psi
Up - 2500 psi
Hopper cover
(optional)
Open - 1500 psi
Close - 1800 psi
Down - 2500 psi
OR