. SAFETY PRECAUTIONS FOR MAINTENANCE 2 - 36 PRECAUTIONS WITH HIGH-PRESS URE OIL The hydraulic system is always un der internal pressure. In a ddition, the fuel piping is also under internal pressure when the eng ine is running and immediately after the e ngine is stopped. When carr ying out inspection or replacement o f the piping or hose s, check that the internal pressure in the circuit has bee not done, it may le ad to serious perso nal injury or death. Alway Do not carry out inspection or re placement operations wh en the system is still under pr For details o f the procedurefor re leasingthe pressure, see "PROCEDURE FOR BLEEDI NG AIR IN HYDRAULIC SYSTEM (P AGE 4-46)".
If there is an y leakage from the p iping or hoses, the surrou nding area will be wet, so chec k for cracks in the piping and hoses a nd for swelling in th When carry out inspection, wea r safety glasses and leath There is a h azard that high-pres sure oil leaking from small may penetrate your skin or cause loss of sight if it contact skin or eyes directly. If you are hit by a jet of high-press and suffer injury to your skin or eyes, wash the place with water, and consult a doctor immediately for medical atten may penetra te your skin or caus e loss of sight if it contact skin or eyes directly.
If you are hit by a jet of high-press and suffer in jury to your skin or e yes, wash the place with water, and c onsult a doctor imm ediately for medical atten PRECAUTIONS WITH HIGH-PRESSURE FUEL When the engi ne is running, high-p ressure is generated in th e engine fuel piping. When ca rrying out inspection or maintenance o f the fuel piping syst em, stop the engine and w ait for at least 30 seconds to all ow the internal pressure to go down be fore starting the ope ration. 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 leaks from high-pre personal inj ury, or death.
If the h ose or piping mounts are l oose or oil or fuel is found to be leaking from the mount, stop operati ons and tighten to th e specified torque. If any dama ged or deformed ho ses or piping are found, p lease consult your Komatsu di Replace the h ose if any of the follo wing problems are found Damaged h ose or deformed hy draulic fitting. Frayed or c ut covering or expo sed reinforcement wire la Covering s wollen in places. Twisted or crushed movable po Foreign ma terial embedded in c NOISE When carrying out maintenance of the engine and you are ex posed to noise for long periods of time, wear ear covers or ear plugs w hile working.
o loud, it may cause temporary or permanent hearing problems. If t he noise fro m the machine is to o loud, it may cause temp orary or permanent hearing pr