IHI IC50, Operation Manual

Page: 73 / 104

MAINTENANCE
IC50 ENG 4-13
HYDRAULIC SYSTEM
Check the hydraulic oil level
1. Place the machine on a flat and rigid ground and bring
it into the posture for checking the hydraulic oil level.
Stop the engine.
2. Check the oil level gauge (1). If the oil level is between
H and L, it is proper.
The oil level differs with the oil temperature. The
following shows the standard.
•
Near the L level before starting operation
(Oil temperature: 10 to 30
°
C)
•
Near the H level during operation
(Oil temperature: 50 to 80
°
C)
3. If the oil level is below the L level, open the cover (2)
and refill hydraulic oil through the filler port (3).
Drain the hydraulic oil tank
WARNING
Oil is hot immediately after operation. You may get
burnt if you touch oil.
Start work after oil has cooled down.
1. Loosen the drain plug (4) under the hydraulic oil tank to
discharge water and sediment into the container.
2. Close the drain plug when clean hydraulic oil is only
discharged.
3. Check the hydraulic oil level. Refill oil if insufficient.
Posture for checking the
hydraulic oil level