MAINTENANCE PLAN 203 IMPORTANT Replacement interval for hydraulic oil 2000 • The hydraulic oil of the machines equipped with demoli- tion hammer deteriorates more rapidly than the oil of the machines used for simple digging operations. Perform the oil changes according to the indications giv- en in the table beside. (H) 1500 interval 1000 Replacement 500 0 20 40 60 80 100 Breaker operating ratio (%) RWA07630 (H) 1500 interval 1000 Replacement 500 0 20 40 60 80 100 Breaker operating ratio (%) RWA07630