SANY LATIN AMERICA
4-67
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
●
When pressure in passage (P) exceeds
the elastic force of spring (621), cone valve
(611) is pushed open. Therefore, working
oil
fl
ows through hole (C) via the periphery
of cone valve (611) and enters low-pres-
sure path (R).
ZX225-1102029
C
P
R
611
621
ZX225-1102030
611
621
C
P
R
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