SANY LATIN AMERICA
8-101
SY195/205/215/225C9 Crawler Hydraulic Excavator
Disassembly and Assembly
Shop Manual - June 2013
4) Installation of buffer ring (16)
NOTE: Make sure that the seal is in-
stalled in correct direction. Inverse in-
stallation can cause high pressure be-
tween the buffer ring (16) and the U-ring
(17), which may lead to deformation or
breakage of oil cylinder.
5) Install the elastic ring (20) to prevent
the fall of the bushing (19).
3. Assembling the piston assembly
1) Installation of seal (14).
NOTE: Install first the O-ring seal and
the one-side guard ring (13) on the pis-
ton. Place the piston on the press. As
shown in the illustration on the right,
the seal (14) is installed with the tools
indicated.
2) Correction of seal (14)
NOTE: Install the seal (14) and the
guard ring (13) on the other side. In
order to prevent the expansion of the
seal (14), a corrector must be used to
correct the seal (14) which has been
stretched during installation. The piston
rod may not be able to go in the cyl-
inder barrel if the seal (14) is not cor-
rected timely.
3) Installation of slide ring (12)
NOTE: Slightly open the slide ring (12)
and install it axially. Excessive opening
of the slide ring (12) can fail installation.
13
14
13
12
ZX215-1006179
Press
Tool
Block
Press
Corrector
Piston
Tool
O-ring
18
19
17
16
20
ZX215-1006173
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