Maintenance
Safety, Operation and Maintenance Manual - Aug 2012 5-93
SY115C9/135C/155H Crawler Hydraulic Excavator
5.8.8.5 Oil in hydraulic tank - change
Note:
For machines equipped with a hydraulic
breaker, the hydraulic oil deteriorates faster
than that of machines operating with a bucket.
For more information see “Hydraulic Break-
er Service Interval” on page 5-27.
●
For refilling capacity see“Fluid capaci-
ties” on page 5-19.
●
Prepare a lever (used for 36 mm socket
wrenches)
1. Unscrew the bolts of the bottom cover
plate and remove the cover plate.
2. Swing the upper structure in order to posi-
tion the drain plug beneath the hydraulic
tank between the tracks.
3. Retract the arm and bucket cylinders and
lower the boom in order to enable the
bucket tips to touch the ground.
4. lace the hydraulic lockout control to the
LOCK position and turn off the engine.
●
When the engine has just been stopped,
the parts and oil are still hot and can
cause serious burn. Wait until they are
cool enough before doing the job.
●
Press the breather valve venting button
to release the internal pressure before
removing the oil fi ller cap.
CZ335-1104102
Fig. 5-109
WARNING
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