2 - 1
Section 3
Routine Maintenance
9803/6020
Section 3
2 - 1
Issue 1
Service Schedules
Service Intervals for Hydraulic Oil and Filters when using a Breaker
When using a breaker, contamination and degradation of the hydraulic oil occurs much more quickly than in normal excavating
use. If the machine is used with increasingly degrading oil it can cause problems in the control valve, premature wear of the
hydraulic pump and damage to the hydraulic system as a whole.
Servicing of the hydraulic oil and filters must be done more frequently according to the percentage of total operating hours
involving use of the breaker. When a breaker is fitted, ensure that the oil and filters are changed at the intervals shown in the
table below.
The hydraulic oil must be sampled and checked for contamination and degradation at the intervals shown.
Use Frequency
Use Frequency
Use Frequency
Use Frequency
100%
40%
20%
10%
Item
Time (hrs)
10
100
600
10
300
1500
10
600 3000
10
800 4000
Hydraulic Oil
●
●
●
●
●
●
●
●
●
●
●
●
Return Filter
●
●
●
●
Suction Filter
¹
●
¹
●
¹
●
¹
●
Drain Filter
●
●
●
●
Servo Filter
●
●
●
●
Nephron Filter
●
●
●
●
Breaker In-Line Filter
●
●
●
●
Hydraulic Oil Sampling
Every 200 hrs
Every 300 hrs
Every 600 hrs
Every 800 hrs
●
●
Check oil level and top up as required
●
Change ¹ Clean
Note:
The filters must be changed whenever the period of breaker use exceeds 100hrs, regardless of the total number of
hours the machine has worked.
Summary of Contents for JS70
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