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MAINTENANCE SCHEDULE
MAINTENANCE
Replace hydraulic filter element
On a new machine, replace the element after the first 100 to
150 hours, then perform further replacement of the element ac-
cording to the table on the right.
Change of oil in hydraulic tank
Change the oil according to the table.
Replace additional filter element for breaker (if equip-
ped)
Use a guideline of 250 hours for use of the breaker (operating
ratio of the breaker: 50% or more), and replace the element ac-
cording to the table.
For detail, see "METHOD FOR REPLACING ADDITIONAL FIL-
TER ELEMENT FOR BREAKER (6-54)".
Replace pilot filter element (if equipped)
Use a guideline of 250 hours for use of the breaker (operating
ratio of the breaker: 50% or more), and replace the element ac-
cording to the table.
For detail, see "METHOD FOR REPLACING ADDITIONAL PI-
LOT FILTER ELEMENT FOR BREAKER (6-55)".
X: Breaker operating ratio (%)
Y: Replacement interval (H)
(A):
Hydraulic tank element, pilot filter element
(B):Hydraulic oil
(C):Element of additional filter
REMARK
Breaker operating ratio 100 % means that only the breaker is used
Breaker operating ratio 0 % means that the breaker is not used
Lubrication
When the hydraulic breaker is equipped, lubricate the machine on 100-hour intervals. For detail, see "METHOD
FOR LUBRICATING (4-46)".
4-14
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