Komatsu Utility 76243, Руководство по эксплуатации и техническому обслуживанию

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SAFETY
PRECAUTIONS FOR MAINTENANCE
2-35
DO NOT DISASSEMBLE RECOIL SPRING
Never attempt to disassemble the recoils spring assembly. It contains a spring under high pressure which serves
as a shock absorber for the idler. If it is disassembled by mistake, the spring will fly out and cause serious injury.
When it becomes necessary to disassemble it, ask your Komatsu distributor to do the work.
PRECAUTION WITH HIGH-PRESSURE OIL
The hydraulic system is always under internal pressure. When inspecting or replacing piping or hoses, always
check that the pressure in the hydraulic circuit has been released. If the circuit is still under pressure, it will lead to
serious injury, so always do as follows.
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Release the pressure. For details, see “PROCEDURE FOR RELEASING INTERNAL PRESSURE IN
HYDRAULIC CIRCUIT (4-44)“. Do not carry out inspection or replacement while the circuit is still under pres-
sure.
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If there is any leakage from the piping or hoses, the surrounding area will be wet, so check for cracks in the
piping and hoses and for swelling in the hoses.
When carry out inspection, wear safety glasses and leather gloves.
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There is a hazard that high-pressure oil leaking from small
holes may penetrate your skin or cause blindness if it con-
tacts your eyes directly. If you are hit by a jet of high-pres-
sure oil and suffer injury to your skin or eyes, wash the
place with clean water, and consult a doctor immediately
for medical attention.
PRECAUTION FOR HIGH FUEL PRESSURE
High pressure is generated inside the engine fuel piping when the engine is running. When carrying out inspection
or maintenance of the fuel piping system, wait for at least 30 seconds after stopping the engine to let the internal
pressure go down before starting inspection or maintenance.
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.