Komatsu ecot3 PC300LC-8 Shop Manual page 227

10 Structure, function and maintenance standard
2) At high peed (motor swash plate angle at minimum)
As the solenoid valve is energized, the pilot
q
pressurized oil from the self pressure reducing
valve flows to port (P).
Regulator valve (21) is pushed to the left.
q
q The pressurized oil from the control valve
passes through passage (d) in regulator valve
(21) and enters regulator piston (13).
Regulator piston (13) is pushed to the right.
q
q Rocker cam (3) is inclined in the minimum
swash plate angle direction. The motor capac-
ity becomes minimum, turning on the high
speed travel.
PC300, 350-8
SEN01995-01
35