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FOREWORD
12
Points To Remember When Handling Hydraulic Equipment
With the increase in pressure and precision of hydraulic equipment, the most common cause of failure is dirt (foreign material)
in the hydraulic circuit. When adding hydraulic oil, or when disassembling or assembling hydraulic equipment, it is necessary
to be particularly careful.
1.
Be careful of the operating environment.
•
Avoid adding hydraulic oil, replacing filters, or repairing the
machine in rain or high winds, or places where there is a lot of
dust.
2.
Disassembly and maintenance work in the field
•
If disassembly or maintenance work is performed on hydraulic
equipment in the field, there is danger of dust entering the
equipment. It is also difficult to check the performance after
repairs, so it is desirable to use unit exchange. Disassembly and
maintenance of hydraulic equipment should be performed in a
specially prepared dust proof workshop, and the performance
should be checked with special test equipment.
3.
Sealing openings
•
After any piping or equipment is removed, the openings should
be sealed with caps, tapes, or vinyl bags to prevent any dirt or
dust from entering. If the opening is left open or is blocked with
a rag, there is danger of dirt entering or of the surrounding area
being made dirty by leaking oil so never do this. Do not simply
drain oil out onto the ground, but collect it and ask the customer
to dispose of it, or take it back with you for disposal.
4.
Do not let any dirt or dust get in during refilling operations
•
Be careful not to let any dirt or dust get in when refilling with
hydraulic oil. Always keep the oil filler and the area around it
clean, and also use clean pumps and oil containers. If an oil
cleaning device is used, it is possible to filter out the dirt that has
collected during storage, so this is an even more effective
method.
5.
Change hydraulic oil when the temperature is high
•
When hydraulic oil or other oil is warm, it flows easily. In addi-
tion, sludge can also easily be drained out from the circuit
together with the oil, so it is best to change oil when it is still
warm. When changing the oil, as much as possible of the old
hydraulic oil must be drained out. (Drain the oil from the hydraulic tank, also drain the oil from the filter and from the
drain plug in the circuit.) If any old oil is left, contaminants and sludge in it will mix with the new oil and will shorten
the life of the hydraulic oil.
PC200/220LL-8
HANDLING ELECTRIC EQUIPMENT AND HYDRAULIC COMPONENTS
00
00-15
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