MAINTENANCE PLAN 4.7.2 MAINTENANCE INTERVALS IN CASE OF USE OF THE DEMOLITION HAMMER 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 100ч150 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.
Replacement interval for hydraulic oil 2000 Replacement interval (H) 1500 1000 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. 4.7.2.b CHANGING THE HYDRAULIC OIL 500 0 20 40 60 80 100 Breaker operating ratio (%) RWA10900 175 Replacement interval for element