Doosan DX700LC Operation And Maintenance Manual page 178

Hydraulic Oil and Filter Service Intervals
When using a hydraulic breaker, the viscosity breakdown and
contamination of hydraulic oil is faster because the work
condition is more severe than during normal digging work. To
prevent the hydraulic components (especially pump) from
having a shortened life cycle, replace the hydraulic oil and main
hydraulic oil return filter using the following schedule.
Attachment
Bucket Work
Hydraulic Breaker
Work
* These service intervals only apply, when a genuine DOOSAN oil and filter are used. If any other
brands are used, the guaranteed changed interval should be reduced in half.
100
105 116
106 144
80
112
119
60
128
137
40
156
175
20
206
0
Figure 81
NOTE:
The replacement intervals of hydraulic oil and filter
depend upon the amount of time the hydraulic
breaker is being used. These intervals should be
followed as
maintenance.
Operation
3-36
Operation Rate
100%
100%
551
614
FILTER
692
171
(First Replacement)
214
275
335
FILTER
(After First Replacement)
412
500
635
500
MACHINE OPERATING HOURS
opposed to regularly
Hydraulic Oil
250 Hours (First Replacement)
2,000 Hours
1,000 Hours (After First Replacement)
500 Hours 100 Hours
782
893
1028
1196
1000
scheduled
Filter
HYDRAULIC OIL
1400
1658
1500
FG000767
2000
OP001122