Komatsu 500001, Shop Manual

Page: 42 / 61

PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT
Because of the higher pressure and more precise hydraulic components, the most common cause of a failure is
dust (foreign material) in the hydraulic circuit. The special care must be taken when adding hydraulic oil, or
when disassembling, or assembling the hydraulic components.
Select an appropriate workplace
• In rain or high winds, or in dusty environment, avoid adding hydraulic oil, replacing filters, or repairing the
machine.
Disassembly and maintenance work in the field
k
Any component may jump out or oil may spurt out by the remaining pressure in the hydraulic circuit
and it may result in serious personal injury or death when removing and disassembling of the hy-
draulic equipment is performed.
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Release the remaining pressure from the hydraulic circuit always before performing the work.
• In the field, there is a risk of dust entering the component
during disassembling or maintenance work, and perform-
ance check is hardly performed. Replacement of the as-
sembly is recommended.
• Perform disassembling and maintenance work in the dust
proof area.
Sealing of openings (prevention of flowing out of oil)
Plug the openings of the piping and the device which have been removed to prevent foreign material from enter-
ing and oil from flowing out.
NOTICE
Do not expose the openings or stuff it, otherwise foreign material may enter or leaked oil may pollute
the environment.
Do not discard the oil inconsiderately. Ask the customer for disposal or bring it back to dispose it ap-
propriately.
REMARK
Cover the places tightly with caps, tapes, or plastic bags if it is
hard to provide the plugs.
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT 00 INDEX AND FOREWORD
00-40 PC210LC-11