Hydraulic System 89
• Tailgate: 4 ways, 3 positions
• Packer: 4 ways, 3 positions
• Crusher panel: 4 ways, 3 positions
NOTE: All sections are electro-hydraulically actuated.
For more information on the body control valve, see Main Hydraulic Schematic on page 124. To learn
how to adjust hydraulic pressure, see Hydraulic Pressures on page 107.
Arm Control Valve
MINIMAX™ vehicles are also equipped with an arm control valve (see Figure 5-4). As part of the arm
vane pump system, this valve powers all arm functions (gripper open/close, arm extend/retract and
arm up/down).
As such, the amount of flow coming out of it will be according to the position of the spool
1
. This
feature, called proportional control, allows infinite control of the speed and movement of the arm.
Each section of this valve is actuated by an electric coil located behind the valve.
Figure 5-4
Arm control valve
• Input/output cover: provided with main relief valve
1. Except for the gripper section of the valve which does not modulate the hydraulic flow into the gripper cylinder.
Grabber open
Grabber close
Arm down
Arm up
Arm retract
Arm extend
To Next Page
Loading...
Need help?
General
