Daewoo Solar 130LC-V, Инструкция по эксплуатации

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General Maintenance Procedures
HYDRAULIC SYSTEM CLEANLINESS AND OIL LEAKS
MAINTENANCE PRECAUTIONS FOR HYDRAULIC SYSTEM SERVICE
Whenever m aintenance, repairs or any o ther t ype of troubleshooting or s ervice is bei ng performed, it’s
important t o rem ember t hat t he h ydraulic syst em – including bot h t he interior and e xterior surfaces of
assemblies, and every drop of operating fluid – must be protected from contamination.
Dust and other foreign contaminants are major contributors to premature wear in hydraulic circuits. The
narrow tolerances, rapidly moving parts and hi gh operating pressures of the system require that fluid be
kept as c lean as possible. T he perf ormance and de pendability of t he m achine (and t he s ervice l ift of
individual components) can be noticeably reduced if proper precautions are not observed:
• Use a s afe, non-combustible, e vaporative-type, low-residue s olvent and t horoughly clean
exterior surfaces of assemblies before any part of the circuit is opened up or disassembled.
NOTE:
It’s just as important to clean the cap and reservoir top before routine fluid changes or
quick c hecks as it is bef ore major r epairs. (Accumulated di rt at tracts moisture, oil and
other fluids – as well as more dirt.)
• Keep dismantled parts covered during disassembly. Use clean caps, plugs or tape to protect the
disconnected openings of flanges, manifolds and piping.
• Do not allow cleaning solvents or other fluids to mix with the oil in the system. Use clean oil to
flush any traces of solvent or other residue before reassembly.
• If metal or rubber fragments are found in the system, flush and repl ace all fluid in the system
and troubleshoot the circuit to identify the source of contamination.
OIL LEAKAGE PRECAUTIONS
Oil that is visibly seeping from joints or seals should always serve as a “red flag” alarm.
Leaks must alert the machine operator and maintenance crew that air, water and di rt have an open , free
passageway through which to enter the circuit. Harsh, corrosive salt air, freezing and thawing condensation
cycles an d working en vironments t hat are f ull of f ine dus t are especially haz ardous. Cl ogging of v alve
spools o r external pi ping (especially pilot c ircuit p iping) can gr adually diminish or v ery s uddenly p ut a
complete stop t o nor mal h ydraulic function. You c an pre vent ha ving to m ake these types of repai rs b y
following recommended assembly procedures:
1. Use new O-rings and oil seals whenever hydraulic assemblies are rebuilt.
2. Prepare joint surfaces prior to assembly by checking alignment and flatness. Clean and repair
corrosion or any other damage.
3. Follow bolt torque recommendations and all other assembly requirements.
IMPORTANT
Make sure that cleaning solvents will be compatible with rubber materials used in the hydraulic
system. Many petroleum based compounds can cause swelling, softening, or other deterioration
of system sealing elements, such as O-rings, caps and other seals.