SANY LATIN AMERICA
6-43
SY195/205/215/225C9 Crawler Hydraulic Excavator
Testing and Adjusting
Shop Manual - June 2013
3. Measure oil leakage from bucket cylin-
der
1) Start the engine and keep it running un-
til the hydraulic oil temperature is within
the operational range. Fully extend the
bucket cylinder.
NOTE: Release the residual pressure
in the circuits.
See “Residual Pressure in Hydraulic
Circuit - Release” on page 6-40.
2) Disconnect the hose (3) on the cylinder
head side and plug the hose end with a
cap.
NOTE: Be careful not to disconnect the
hose on the cylinder bottom side.
3) Start the engine and apply relief pres-
sure to the bottom side of the cylinder
while the engine is running at high idle.
4) Hold this condition for 30 seconds.
Measure oil leakage for one minute.
5) Make sure that the machine returns to
its normal condition after measurement.
3
ZXT225-1104008
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