. SAFETY PRECAUTIONS FOR MAINTENANCE 2 - 35 PRECAUTIONS WITH HIGH-PRESSURE OIL The hydraulic system is always under internal pr essure. In addition, the fuel piping is als o under internal pressure when the eng ine is running and immediately after the engine is stopped. When ca rrying out inspe ction or replacement o f the piping or hoses, check that t he internal pressure in the circuit has be is is not done, it may le ad to serious personal injury or de Do not carry out inspection or replacement wo If there is an y leakage from the piping or hoses , the surrounding area will be wet, so che ck for cracks in th e piping and hoses a nd for swelling in the hoses. s and leather gloves.
from small holes if it contacts your high-pressure oil place with clean edical attention. When carry out inspection, wear safety glasse There is a h azard that high-pressure oil leaking may penetrate your skin or cause loss of sight skin or eyes directly. If you are hit by a jet of and suffer injury to your skin or eyes, wash the water, and consult a doctor immediately for m may penetra te your skin or cause loss of sight skin or eyes directly. If you are hit by a jet of and suffer in jury to your skin or eyes, wash the water, and c onsult a doctor immediately for m PRECAUTIONS WITH HIGH-PRESSURE FUEL When the engi ne is running, high-pressure is gen erated in the engine fuel piping.
When carrying out insp ection or maintenance o f the fuel piping system, stop the en gine and wait for at least 30 seconds to a llow the internal pressure to go down bef ore starting the operation. HANDLING HIGH-PRESSURE HOSES AND PIPING If oil or fuel leaks from high-pressure hoses or piping, it may cause fire or misoperation, and lead to serious If oil or fuel personal inj ury, or death. If the hose or piping mounts are loose or oil or fuel is found to b e leaking from th e mount, stop operati ons and tighten to the specified to rque. re found, please consult your Komatsu distributor. s are found. ent wire layer.
If any dama ged or deformed hoses or piping a re found, please consult your Komatsu Replace the h ose if any of the following problem Damaged h ose or deformed hydraulic fitting. Frayed or c ut covering or exposed reinforcem Covering s wollen in places. crushed movable portion. terial embedded in covering. Twisted or Foreign ma NOISE When carrying out maintenance of the engine and you are exposed to noise for long period s of time, wear ea r covers or ear plugs w hile working. cause temporary or permanent hearing problems. If t he noise fro m the machine is too loud, it may cause temporary or permanent hearing