5-6
MAINTENANCE
SERVICE DATA
REGULARLY REPLACE THE HYDRAULIC
OIL
When a hydraulic breaker is used, the oil
deteriorates more quickly than that used for
a usual excavation operation. Be sure to
replace the hydraulic oil and the return filter
elements.
• Failure to replace these in time can lead to
damage to the machine and the breaker
hydraulic system. To prolong the service life
of the hydraulic devices, properly replace
the hydraulic oil and the return filter
elements according to the table below.
• When replacing the hydraulic oil, clean the
suction strainer.
When the breaker operating ratio is 100%.
Refer to “Hydraulic breaker” on page 8-6.
Volume
Engine oil pan
Engine cooling
system
Hydraulic oil
tank
Fuel tank
Travel reduction
gear
Upper limit
2.8 L (3.0 US qt.)
Lower limit
1.8 L (1.9 US qt.)
4.0 L (4.2 US qt.)
System
15 L (4.0 US gal.)
Tank
9 L (2.3 US gal.)
Level capacity
12 L (3.3 US gal.)
0.33 L X 2
(0.35 US qt.) X 2
Replacement interval (hours)
Item Hydraulic oil
Filter
element
1st time — 25
2nd time — 100
Periodically 600 200
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