MAINTENANCE
7-29
BREAKER MAINTENANCE
Change Hydraulic Oil and Replace Hydraulic Oil Tank Filter
Hydraulic breaker operation subjects the hydraulic system to
become contaminated faster and to quickly deteriorate the hy-
draulic oil. For this reason, hydraulic oil must be changed and
the hydraulic oil tank filter must be replaced more often than
the machine equipped with a bucket. Failure to do so may
result in damage to the breaker, hydraulic oil pump, and other
related hydraulic system components. Recommended
changing intervals are shown below. For filter replace-
ment and oil changing intervals are shown below. (For
filter replacement and oil changing procedures, refer to
the “Hydraulic System” in the “MAINTENANCE” Section.)
IMPORTANT: Use a high performance element (micro-
glass) on excavators engaged in demolition
and logging work. In case using a filter-pa-
per element is unavoidable, change hydrau-
lic oil and the filter element at the intervals
as illustrated with dotted lines.
NOTE: Full-flow filter restriction indicator is optional.
If a filter-paper element is used, this indicator
does not operate. (Refer to the Hydraulic System
in the Maintenance section.)
Excavator Operating Hours
Changing intervals (Hours)
Attachment
Availability
*Hydraulic Oil Full Flow Filter Element
**Element Type
Bucket
100%
1500
1000
Standard Filter Paper
High Performance Element
2500
5000
Hydraulic Breaker
100%
600
100
Standard Filter Paper
1000
300
High Performance Element
* : Changing intervals differ depending on the brand of hydraulic oil used. Refer to the Hydraulic System in the MAINTE-
NANCE section.
** : Use the high performance element (micro-glass) on excavators engaged in demolition and logging work.
Hours to Replace
Element
Average
Breaker
Operating
Availability
(%)
Changing Intervals (Hours) of Hydraulic Oil and Full Flow Filter Element
Hours to Change
Hydraulic Oil
Changing Interval when using
1500-hour life time hydraulic oil
Changing Interval when using
5000-hour life time hydraulic oil
Changing Interval when using
2500-hour life time hydraulic oil
: When using high performance element (micro-glass)
: When using filter-paper element
4000
3000
2000
1000
0
0
20
40
60
80
100
5000
M1U1-05-006
Summary of Contents for ZAXIS 120-3 class
Page 1: ......
Page 3: ......
Page 5: ......
Page 49: ...SAFETY SIGNS Europe Asia Middle and Near East Model Only S 38 MEMO ...
Page 131: ...BREAK IN 2 MEMO ...
Page 191: ...TRANSPORTING 6 MEMO ...
Page 290: ...HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT 8 HYDRAULIC CIRCUIT M1V1 08 001 ...
Page 292: ...8 ELECTRICAL DIAGRAM ...
Page 293: ...HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT 8 MEMO ...
Page 295: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 MEMO ...
Page 351: ...SPECIFICATIONS 12 42 MEMO ...
Page 455: ...OPTIONAL ATTACHMENTS AND DEVICES 13 104 MEMO ...
Page 461: ...INDEX 14 MEMO ...