110 Hydraulic System
Proportional Valve
A
UTOMIZER
™ F
ULL
E
JECT
vehicles are equipped with a proportional valve (see Figure 5
4), as part of
the
arm vane pump, that powers all arm functions (gripper [open/close], lifting arm [extend/retract,
up/down]). It can also power an optional crusher panel with the addition of another valve section.
The amount of flow coming out of this valve varies according to the position of the spool. This
feature, called proportional control, allows infinite control of the speed at which the arm goes up and
down, extends and retracts.
Each section of this valve is actuated by an electric coil located on the side of the valve.
Figure 5
-
4 Proportional valve
•
Input/output cover: provided with main relief valve
•
Gripper section (open/close): not proportional, with load sensor relief
•
Lifting arm section (extend/retract): proportional, no load sensor relief
•
Lifting arm section (up/down): proportional, no load sensor relief
Inspecting the Pump
The hydraulic pump is powered by the vehicle engine through a drive shaft or by an optional PTO.
The pump should be visually inspected every working day.
N
OTE
:
On some units, the pump is directly installed on a PTO with no drive shaft.
Pressure
Return
Gripper (open/close)
Lifting arm (up/down)
Lifting arm (extend/retract)
Summary of Contents for AUTOMIZER FULL EJECT
Page 1: ...AUTOMIZERTM FULL EJECT MAINTENANCE MANUAL ...
Page 2: ......
Page 3: ...AUTOMIZERTM FULL EJECT MAINTENANCE MANUAL ...
Page 36: ...28 Safety ...
Page 112: ...104 Lubrication ...
Page 139: ...Hydraulic System 131 Figure 5 23 Strainer assembly Strainer ...
Page 144: ...136 Hydraulic System Figure 5 27 Detecting cylinder internal leaks 1 2 3 4 5 A A A ...
Page 160: ...152 Hydraulic System 0 1 2345 62789 ELECTRO HYDRAULIC VALVE HD RH ARM ...
Page 161: ...Hydraulic System 153 0 1 2345 62789 ELECTRO HYDRAULIC VALVE CRUSHER PANEL HD RH ARM ...
Page 164: ...156 Hydraulic System ...
Page 176: ...168 Electric System Cab Console Control Wiring ...
Page 177: ...Electric System 169 Control Box ...
Page 178: ...170 Electric System Chassis ...
Page 179: ...Electric System 171 Tailgate Lighting ...
Page 180: ...172 Electric System Left Body SideWiring ...
Page 181: ...Electric System 173 Right Body Side Wiring ...
Page 182: ...174 Electric System Camera s Switchpack s Layout Option s AUTO 10 SEC INHIBIT AUTO ...
Page 204: ...196 Troubleshooting ...
Page 205: ...Troubleshooting 197 ...
Page 206: ...198 Troubleshooting ...
Page 230: ...222 Multiplexing ...
Page 254: ...246 Lifting Arm Figure 10 27 Standard lifting arm ...
Page 255: ...Lifting Arm 247 ...
Page 256: ...248 Lifting Arm ...