SANY LATIN AMERICA
8-103
SY195/205/215/225C9 Crawler Hydraulic Excavator
Disassembly and Assembly
Shop Manual - June 2013
3
4
ZX215-1006183
Rivet
Punch
6
5
23
ZX215-1006182
Gap facing piston side
Rod end buffer
10) The buffer sleeve (6) must be installed
according to the illustration on the right.
11) Tighten the piston nut (5).
Piston nut (arm):
9600 N·m {979.6 kgf·m}
Piston nut (boom and bucket):
6200 N·m {632.6 kgf·m}
NOTE:
●
Insufficient tightening can cause oil
leakage, loose nut and thread break-
age. In addition, excessive tightening
can cause expansion of the buffer shaft
on the extending side or deformation of
piston on the contact side.
●
Thoroughly clean and grease (with ba-
nana oil) the threaded portions of the
piston, nuts and piston rod before tight-
ening the nuts.
12) Treatment of the piston against loosen-
ing
NOTE: After the piston nut (5) is tight-
ened, put in the steel ball (4), tighten
the setscrew (3) and punch to rivet the
two peripheral points.
Setscrew (3):
66.9 N·m {6.8 kgf·m}
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