Komatsu PC500LC-10R Shop Manual page 689

90 CIRCUIT DIAGRAMS
Symbol
PC500LC-10R
SYMBOLS USED IN HYDRAULIC CIRCUIT DIAGRAM
Control valve
Single acting solenoid valve
Single acting proportional solenoid valve
Hydraulic pilot valve
Hydraulic 2-stage pilot valve
Lock valve
Drain valve
Pressure regulating valve, safety valve, relief valve
Pressure regulating valve, safety valve, relief valve
(when the oil pressure is discharged to the low-pressure side)
Bypass valve
Accumulator
Cylinder
Cylinder with piston valve
Content
90-11