Komatsu PC200-8M0 Shop Manual page 182

SEN06120-00
Operation
When pilot pressure (PST) is shut off (travel junction)
q If pilot pressure (PST) from the travel junction solenoid valve is shut off, travel junction spool (2) is
pressed back towards right by the force of spring (1). As a result, ports (PTL) and (PTR) are intercon-
nected.
q If the oil flow rates to the R.H. and L.H. travel motors become different from each other, the oil flows
through the opening of travel junction spool (2) from port of higher pressure side to port of lower pres-
sure side supplying the difference of oil to the lower pressure side so that the oil flow rates to both
motors will be equalized.
40
10-402
402 Hydraulic system, Part 2
Functions and operation by valve
PC200, 200LC, 220, 220LC-8M0