Komatsu ecot3 PC300LC-8 Shop Manual page 117

10 Structure, function and maintenance standard
As a result, the pressure on port (C) rises and
q
the pressure on the large diameter end of the
piston also rises. Thus, the leftward move of
servo piston (9) is stopped.
q Servo piston (9) stop position (= Pump deliv-
ery) is decided by the position where the push-
ing force generated from the pressures (PP1)
and (PP2) applied to spool (3), the pushing
force of the solenoid in PC-EPC valve gener-
ates and the pushing force of springs (4) and
(6) are balanced.
PC300, 350-8
SEN01993-00
21