Komatsu PC500LC-10R Shop Manual page 265

10 STRUCTURE AND FUNCTION
OPERATION OF TRAVEL JUNCTION VALVE OF CONTROL VALVE
When pilot pressure (PST) is cut off (travel circuits are connected to each other)
1.
When pilot pressure (PST) from the travel junction solenoid valve is cut off, travel junction spool (2) is push-
ed back to the left by the reaction force of spring (1), and port (PTL) and port (PTR) are connected.
2.
When there is difference between the inflow rates to R.H. and L.H. travel motors, oil is supplied from the
port on the high pressure side through the opening of travel junction spool (2) to the port on the low pres-
sure side to compensate for the differential pressure, and oil is supplied to R.H. and L.H. motors evenly.
PC500LC-10R
COMPONENT PARTS OF HYDRAULIC SYSTEM
AEP21625
10-171