85REGULAR CHECKS AND MAINTENANCE WORK
5. Remove and exchange the suction filter.
6. Retighten the drain plug.
7. Fill oil through the oil filling opening on the top side of
the tank.
8. Let the engine run and operate the boom, arm, bucket
and boom swing device. Then bring the boom to the
highest position, pull the arm, bucket inward and boom
swing left end.
9. Fill oil again up to the center of the gauge.
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 conditions than normal
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.
(1) Oil filling plug
(2) Hydraulic tank cover
(3) Suction filter
(4) Drain plug
Hydraulic
oil volumes
Hydraulic
tank
75 L (19.8 US gal.)
Whole oil
volumes
146 L (38.6 US gal.)
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