Inspection, Maintenance and Adjustment
4-79
DX380LC-7
Hydraulic Oil and Suction Filter - Replace
NOTE:
Based on the type of excavating being completed,
the working conditions (extremely hot or dusty) and
the extra front end attachments being used (hydraulic
breaker, etc.), the hydraulic fluid will need to be
changed more frequently.
1.
Park machine on firm and level ground. Swing upper
structure parallel to tracks. Lower boom and position
bucket on ground as shown in Figure 119.
2.
Move safety lever to "LOCK" position.
3.
Stop engine.
4.
Release pressurized air from hydraulic tank by tip breather
cap up (1, Figure 122).
Figure 118
ARO1760L
WARNING
AVOID DEATH OR SERIOUS INJURY
The hydraulic oil will be hot after machine operation. Allow
the system to cool before attempting to service any of the
hydraulic components.
The hydraulic tank is pressurized. Tip breather cap up to
allow the pressurized air to vent. After the pressure has
been released, remove service covers.
NOTICE
Make sure to clean any dirt or water from the top of the
hydraulic tank, especially around the fill port and filter
ports.
Hydraulic oil change interval is 2,000 hours only when
DOOSAN Genuine Oil is used. If another brand of oil is
used, a change interval of 1,000 hours is necessary.
EX1300542
Figure 119