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84
REGULAR CHECKS AND MAINTENANCE WORK
9. Fill oil again up to the center of the gauge.
Hydraulic
tank
Hydraulic
oil volumes
Whole oil
volumes
10. Install the hydraulic tank cover and tighten the oil filling
plug.
BHydraulic Oil Check with Hydraulic
Hammers
The hydraulic oil change after 1000 operating hours in the
operator's manual is based on normal excavator work.
Following inspection measures are valid when hydraulic
hammers are used:
1. Changing and filling up of hydraulic oil
(1) The hydraulic oil must be changed more often
when hammers are used because the machine is
subject
to
harder
excavating work.
(2) Use only the recommended oils mentioned in the
operator's manual when changing or filling with
oil.
(3) When filling up oil, do not mix oils of different
makes.
2. Changing the return filter cartridge and oil
(1) The filter cartridge must be changed more often
because of contamination resulting from the
frequent assembly and disassembly of the hoses.
(2) Use the correct replacement filter cartridge.
(3) Oil change according to operating hours.
Hydraulic oil
Normal
every 1000
excavator
Hrs.
work
20% every 800 Hrs.
Hammer
40% every 400 Hrs.
work
60% every 300 Hrs.
portion
more every 200 Hrs.
75 L (19.8 US gal.)
146 L (38.6 US gal.)
conditions
than
normal
Return filter cartridge
every 500 Hrs.
(250 Hrs. after first
operation)
every 200 Hrs.
every 100 Hrs.
EVERY 1000 SERVICE HOURS OR ONCE A
YEAR
BReplacing Air Filter Element
Open the engine hood and remove the dust-cover.
Remove and replace the outer element and inner element
with new elements.
When reassembling, install the dust-cover so that its TOP
mark (arrow) faces up-wards.
(1) Inner element
(2) Outer element
(3) Dust-cover
(4) Clamps
A Shorten the replacement period if the machine is used
in dusty or sandy areas.
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