Maintenance Intervals In Case Of Use Of The Demolition Hammer (Breaker); Changing The Hydraulic Oil Filter; Changing The Hydraulic Oil - Komatsu PC27R-8 Operation & Maintenance Manual

4.7.2 MAINTENANCE INTERVALS IN CASE OF USE OF THE DEMOLITION
HAMMER (BREAKER)
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.
4.7.2.a

CHANGING THE HYDRAULIC OIL FILTER

In new machines, change the filter after the first 100÷150 hours
of operation and for the successive changes keep to the indica-
tions 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.
4.7.2.b CHANGING THE HYDRAULIC OIL
Change the hydraulic oil in the tank according to the intervals in-
dicated 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.
MAINTENANCE PLAN
Replacement interval
for hydraulic oil
2000
1500
1000
Replacement
interval
500 for element
0 20 40
Breaker operating
ratio (%)
60 80 100
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