Komatsu Galeo PC138US-8 Shop Manual page 163

10 Structure, function and maintenance standard
2. Travel valve
Operation
When spool (1) is operated, pump discharge
q
pressure (PP) flows from flow control valve (2)
through notch (a) in the spool and bridge pas-
sage (b) to actuator circuit (A).
Actuator circuit pressure (PA) (= A) is intro-
q
duced through the check valve (5) into LS cir-
cuit (PLS).
a The travel circuit is different from the work
equipment circuit: actuator circuit pressure
(PA) is directly introduced into LS circuit (PLS).
PC138US, USLC-8
SEN02549-02
29