Komatsu D31EX-21, Руководство по эксплуатации и техническому обслуживанию, Страница: 51 / 256

SAFETY
PRECAUTIONS FOR MAINTENANCE
2-33
HANDLING HIGH-PRESSURE HOSES
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If oil or fuel leaks from high-pressure hoses, it may cause fire or defective operation, which may lead to serious
injury. If any loose bolts are found, stop work and tighten to the specified torque. If any damaged hoses are
found, stop operations immediately and contact your Komatsu distributor.
Replace the hose if any of the following problems are found.
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Damaged or leaking hydraulic fitting.
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Frayed or cut covering or exposed reinforcement wire layer.
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Covering swollen in places.
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Twisted or crushed movable portion.
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Foreign material embedded in covering.
WASTE MATERIAL
To prevent pollution, pay careful attention to the method of disposing of waste materials.
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Always put oil drained from your machine in containers.
Never drain oil directly onto the ground or dump into the
sewage system, rivers, the sea, or lakes.
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Obey appropriate laws and regulations when disposing of
harmful objects such as oil, fuel, coolant, solvent, filters,
and batteries.
MAINTENANCE FOR AIR CONDITIONER
If air conditioner refrigerant gets into your eyes, it may cause blindness; if it touches your skin, it may cause frost-
bite.
Never touch refrigerant.
COMPRESSED AIR
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When carrying out cleaning with compressed air, there is a hazard of serious injury caused by flying particles.
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When using compressed air to clean elements or the radiator, always wear safety goggles, dust mask, gloves,
and other protective equipment.
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS
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In order for the machine to be operated safety for a long time, it is necessary to add oil and to carry out service
and maintenance at periodic intervals. In order to further increase safety, components with a strong relation-
ship to safety, such as hoses and seat belts, must be replaced at periodic intervals.
Replacement of safety critical parts: See “PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS (4-
16)“.
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The material of these components naturally changes over time, and repeated use causes deterioration, wear,
and fatigue. As a result, there is a hazard that these components may fail and cause serious injury or death.
It is difficult to judge the remaining life of these components from external inspection or the feeling when oper-
ating, so always replace them at the specified interval.
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Replace or repair safety-critical parts if any defect is found, even when they have not reached the time speci-
fied interval.