Clss - Komatsu PC20R-8 Shop Manual

CLSS

1. OUTLINE
FEATURES
The term "CLSS" stand for the "Closed Center Load Sensing System" which has the following features.
a) Fine-controllability not affected by loads.
b) Controllability enabling digging even in the fine control mode.
c) Complex operability ensured by flow distribution determined according to the opening areas of spools during
complex operation.
d) Energy-saving feature using variable pump control.
STRUCTURE
. The CLSS consists of a variable displacement single piston pump, control valve and actuators.
. The pump body consists of the main pump, TCC valve and LS valve.
10-52
Actuator
P
LS
Control valve
TCC valve
LS valve
P
P
Servo
piston
RKP00661
PC20R-8 PC27R-8