OPERATION
5-23
7. Do not allow the breaker chisel to come in contact
with the boom when rolling in the arm and the
breaker.
8. Change hydraulic oil and replace the full flow filter
element at the regular intervals. Hydraulic breaker
operation subjects hydraulic oil to become
contaminated and/or deteriorated more quickly than
bucket operation. Failure to perform proper
maintenance of hydraulic oil may cause the base
machine and/or the breaker to malfunction. Be sure to
change hydraulic oil and replace the full flow filter
element at the intervals as shown in the table below
to especially extend the service life of the hydraulic
pump. (Refer to the Hydraulic System group in the
Inspection and Maintenance Section.)
Hydraulic Oil change and Full Flow Filter Element
Replacement Intervals (Hours)
M1M7-05-027
9. Greasing Front Attachment
When using a hydraulic breaker, grease all lubrication
points on the front attachment every 50 hours of
operation.
M1M7-05-023
100%
Hours to Replace
Element
Avera
e Breaker O
eratin
Availabilit
Hours to Replace
H
draulic Oil
Excavato
Operating Hours
80%
60%
40%
20%
0%
0 1500 20001000 500
Watch Out!
Take care not to hit the
boom with the breaker
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