MAINTENANCE SCHEDULE MAINTENANCE
4-18
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.
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.
1
2
3
Breaker operating ratio(%)
(when using
braeker only)
(When not
using
breaker)
Replacement interval (H)
1. Replacement interval for hydraulic oil
2. Hydraulic filter element
3. Additional filter element
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