Komatsu PC500LC-10R Shop Manual page 312

COMPONENT PARTS OF WORK EQUIPMENT SYSTEM
ACC: To accumulator
ATT: to attachment
1: Spool
FUNCTION OF ATTACHMENT CIRCUIT SELECTOR VALVE
When the breaker is installed, this function is used to connect the main circuit between the control valve and
breaker to the accumulator. When another attachment (crusher, etc.) is installed, this function is used to discon-
nect the main circuit from the accumulator.
OPERATE ATTACHMENT CIRCUIT SELECTOR VALVE
When attachment other than breaker is installed
1.
Spool (1) is pressed to the left by the force of spring (2).
2.
Port (ATT) is connected to port (V), and port (ATT) is dis-
connected from port (T), and the attachment is connected
to the control valve.
10-218
10 STRUCTURE AND FUNCTION
T: To hydraulic tank
TS: To hydraulic tank
PC500LC-10R