MAINTENANCE SCHEDULE MAINTENANCE MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER 4 For machine equipped with a hydraulic breaker, the hydraulic oil deteriorates faster than for normal bucket digging operations, so set the maintenance intervals as follows. REPLACE HYDRAULIC OIL FILTER ELEMENT q On new machines, replace the element after the first 100 to 150 hours, then carry out further replacement of the ele- ment according to the table on the right. 1. Replacement interval for hydraulic oil 2. Hydraulic filter element 3. Additional filter element CHANGE OIL IN HYDRAULIC TANK q Change the oil according to the table on the right.
REPLACE ADDITIONAL FILTER ELEMENT FOR BREAKER q Use a guideline of 250 hours for use of the breaker (operating ratio for the breaker: 50 % or more), and replace the element according to the table on the right. 4-18 (H) interval Replacement (When n using breaker) 1 2 ot Breaker operating ratio(%) (when using 3 braeker on ly)