MAINTENANCE PLAN
153
4.7.2 MAINTENANCE INTERVALS IN CASE OF USE OF THE DEMOLITION
HAMMER
4.7.2.a CHANGING THE HYDRAULIC OIL FILTER
4.7.2.b CHANGING THE HYDRAULIC OIL
The hydraulic oil used in the machines provided with demolition hammer deteriorates more quickly than the oil
used in normal digging machines, therefore it is advisable to respect the following maintenance plan.
In new machines, change the filter after the first 100÷150 hours of
operation and for the successive changes keep to the indications
given in the table on the right.
If the machine contains synthetic biodegradable oil type HEES,
the filter must be changed after the first 50 hours of operation.
0 20406080100
500
2000
Breaker operating
ratio (%)
Replacement interval (H)
Replacement interval
for hydraulic oil
RWA10900
1500
1000
Replacement
interval
for element
Change the hydraulic oil in the tank according to the intervals indi-
cated in the table on the right.
On machines containing synthetic biodegradable oil type HEES,
change the oil after the first 500 hours of operation and for the
successive changes keep to the indications given in the table on
the right.
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