SANY LATIN AMERICA
4-96
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
●
When the main valve is neutralized (motor
stopped), port M1 and port M2 are shut off
by spool (1) and check valve (2) since no
pressure is generated at port P1 and port
P2. The motor is not rotating.
ZX215-1002094
6-2
7-2
5-2
4-2
2-2
2-1
4-1
5-1
7-1
6-1
8-2
8
8-1
3
1
M1
P1
P2
M2
Circuit B
Circuit C2
Damper chamber A2
Orifice D4
Spring chamber 2
Circuit C1
Orifice D1
Damper chamber A1
Orifice D2
Spring chamber 1
Orifice D3
A. Stopped state
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