Komatsu PC20R-8 Shop Manual page 43

Section A - A
Sezione A - A
. The main pump is an integrated unit consisting of
the pump, servo piston, TCC valve and LS valve.
The explanation of the structure and function is di-
vided into separate sections:
1. Main pump
2. TCC valve
3. LS valve
PC20R-8 PC27R-8
P P P
DA 1
Max
Min
P
en
P
LS
d
2
P
S
RKP01140
10-25