Komatsu Galeo BR380JG-1E0 Shop Manual page 142

SEN01352-00
2. When pilot pressure is turned OFF
Operation
If pilot pressure (PST) from the solenoid valve
q
is 0, travel junction spool (2) is pressed by the
force of spring (1) against the right side and
the pass between ports (PTL) and (PTR) is
open.
32
10 Structure, function and maintenance standard
If the oil flow rates to the L.H. and R.H. travel
q
motors become different from each other, the
oil flows through the route between port (PTL),
travel junction spool (2), and port (PTR) so that
the oil flow rates to both motors will be equal-
ized again.
BR380JG-1E0