Optional Equipment
Safety, Operation and Maintenance Manual - Aug 2012
8-15
SY115C9/135C/155H Crawler Hydraulic Excavator
8.2.4 Hydraulic oil and hydraulic tank
fi
lter - change/replace
The operation of hydraulic breaker could contaminate the hydraulic system and deteriorate the
hydraulic oil. In this case, the hydraulic oil and hydraulic tank
fi
lter should be changed more of-
ten, as compared with the machine installed with bucket. Otherwise, damage could occur in the
hydraulic breaker, hydraulic pump and other hydraulic components. The recommended replace-
ment intervals are shown below. (For information about how to change oil and replace a
fi
lter, see
related items in the Maintenance Section.)
Table 8-1 Change interval (hours)
Machine with Hydraulic Breaker
Machine with Common Bucket
Hydraulic oil
600
1500 or 2500 or 4000
Filter cartridge
100
1000
Note:
The
fi
gures in the above table are determined at 100 percent operation with hydraulic breaker. As
the operating hours of hydraulic breaker reduce, the change intervals could be prolonged corre-
spondingly as shown in the following illustration.
The
fi
lter cartridge must be replaced after the breaker has been operated for 100 hours.
0 500 1000 1500 2000 2500 3000 3500 4000
100
80
60
40
20
0
CZ335-1105015
When microglass filter is used
When paper filter is used
Hydraulic oil change
interval after 1500
service hours
Hydraulic oil change
interval after 2500
service hours
Hydraulic oil change
interval after 4000
service hours
Service Hours
Breaker Operation Percentage %
Fig. 8-21