Komatsu 37BF50111, Руководство по эксплуатации и техническому обслуживанию

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PRECAUTIONS TO BE TAKEN DURING MAINTENANCE
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2.8.15 PRECAUTIONS CONCERNING HIGH-PRESSURE HOSES
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Do not bend high-pressure hoses or rub them with sharp or abrasive objects.
Do not use bent or cracked rigid tubes or hoses that were previously rejected because of leaks or fastening de-
fects, since they may burst during use.
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Always repair or replace any loose or faulty fuel or oil pipe. Any leakage of fuel or oil may cause fires.
2.8.16 PRECAUTIONS TO BE TAKEN
WHEN WORKING ON HIGH-PRES-
SURE SYSTEMS
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Do not forget that the work equipment circuits are always un-
der pressure; for this reason, when it is necessary to add or
drain hydraulic oil, or service or inspect the hydraulic circuit,
it is advisable to lower the equipment to the ground and
completely release the pressures and the residual pressure
present in the tank.
Small leakages from pipes under pressure and the resulting
jets are extremely dangerous, since they can perforate the
skin and penetrate in the blood circulation or injure the eyes.
For this reason, always wear goggles and thick gloves du-
ring the inspections and use a piece of cardboard or a sheet
of plywood to check for oil leakages.
If you are struck by a jet of high-pressure oil or are injured,
even if slightly, consult a doctor immediately.
2.8.17 PRECAUTIONS FOR MAINTE-
NANCE WORK INVOLVING HIGH
TEMPERATURES AND PRES-
SURES
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When the machine is stopped at the end of work, the engine
coolant, the oil and all the components are hot and the
hydralic circuits are under pressure.
In these conditions, if the coolant, the hydraulic oil and the
engine oil are to be drained in order to change them or the
filters, there are serious risks of injuries and burns.
Wait for the temperature to lower within the normal operating
range (40-45ºC) before carrying out the maintenance opera-
tions in accordance with the procedures indicated in the rele-
vant sections of this manual.
RWA01480
DANGEROUS!
RWA01580
CORRECT
RWA00990