Komatsu PC600LC-7 Manual page 108

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
2) During simultaneous operation
Operation
• When the arm and travel FORWARD are operat-
ed at the same time, pilot pressure oil flows from
the L.H. travel circuit to port P1 and pushes the
spool to the right.
• When the arm is operated, pilot pressure oil also
flows to port P3 from the arm PPC shuttle valve.
This passes through the groove in the spool and
port P0, and flows to the straight-travel valve.
10-76
l
• The pilot pressure oil from the swing PPC shuttle
valve flows from port P5
travel valve, and the pilot pressure oil from the
boom and bucket PPC shuttle valves flows from
port P4 port P0 straight-travel valve.
CONTROL VALVE
port P0 straight-
PC600, 600LC-7