XE210C Hydraulic Excavator
Operating and Maintenance Manual
114
2)
Pressure exists in the hydraulic oil tank. Ensure the pressure is released before
removing the cover.
b)
High-temperature fluid and surface. During the operation, engine oil, gear oil and
hydraulic oil may become hot; engine, hose, pipe and other parts will also become hot.
c)
After cooling the oil and parts, start to check or maintain them.
Periodic replacement of rubber hose
a)
Due to ageing, fatigue and wear, the rubber hose containing flammable fluid may be broken under the
pressure. It’s difficult to judge the poorness of rubber hose due to its ageing and wear, and replace the
rubber hose at regular intervals.
b)
Irregular replacement of rubber hose may cause the fire, the injection of fluid into skin or the knock of
front-end working device to persons around it will cause severe heat injury, dermal gangrene, other
injuries or death.
Pay attention to high-pressure fluid
If the fuel, hydraulic oil or other fluids injected under high pressure can penetrate the skin or rip into
the eyes, it will cause severe injury, blindness or death.
a)
Release the pressure before removing the hydraulic or other pipes to avoid this risk.
b)
Tighten all the connections before pressurizing them.
c)
Check the leaks with a paper board, and protect your hands and
body to avoid the contacts with high-pressure fluid. Wear the face
mask or safety goggles to protect your eyes.
d)
In case of any accident, let the doctor who’s familiar with this type
of wound cure immediately.
Any fluid injected into skin must be removed through surgery within several hours, otherwise the
dermal gangrene will be caused.
Treatment of accumulator
The pilot control system is equipped with an accumulator filled with high-pressure nitrogen, so the
pressure of system must be relieved during the maintenance of pilot control system. It’s very
dangerous in case of incorrect operation.
a)
Don’t drill on the accumulator, or don’t make it contact the flame, fire or heat source.
b)
Don’t weld the accumulator, or don’t attach any article on it.
c)
In case of removing, maintaining or treating the accumulator, the filled gas must be discharged.
Contact with our company or supplier.
Fig. 2-22
Fig.2-24
Fig. 2-25
Fig. 2-23
