. SAFETY PRECAUTIONS FOR MAINTENANCE 2 - 35 PRECAUTIONS WITH HIGH-PRESSURE OIL The hydraulic system is always under inter nal pressure. In addition, th e fuel piping is als o under internal pressure when the eng ine is running and immed iately after the engine is that the internal pressure in stopped. When performing inspe ction or replacement o f the piping or hoses, check the circuit has be en released. If this is not is is not done, it may le ad to serious personal injury or death. Always observe the following. r pressure.
Do not perfo rm inspection or replaceme nt work with the circuit unde 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 When perfo rm inspection, wear protecti ve eyeglasses and leather g There is a h azard that high-pressure oil l may penetra te your skin or cause loss of skin or eyes directly. If you are hit by a and suffer in jury to your skin or eyes, wa water, and c onsult a doctor immediately PRECAUTIONS WITH HIGH-PRESSURE FUEL When the engi ne is running, high-pressure is generated in the engine fuel piping.
When performing insp ection or maintenance o f the fuel piping system, stop the engine and wait for at le ast 30 seconds to a llow the internal pressure to go down be fore starting the operation. HANDLING HIGH-PRESSURE HOSES AND PIPIN G oses or piping, it may cause fire or misoperation, and lead to serious If oil or fuel leaks from high-pressure h personal inj ury or death. If the hose or pi ping mounts are loose or oil or fuel is found to b e leaking from th e mount, stop operati ons and tighten to the specif ied torque. ping are found, consult your Komatsu distributor. oblems are found. tting. orcement wire layer. .
If any dama ged or deformed hoses or pi ping are found, consult you r Komatsu distribu Replace the h ose if any of the following pr Damaged h ose or deformed hydraulic fi Frayed or c ut covering or exposed reinf Covering s wollen in places. crushed movable portion. Twisted or Foreign ma terial embedded in covering NOISE When performi ng maintenance of the engin e and you are exposed to no ise for long period s of time, wear ea r covers or ear plugs w hile working. may cause temporary or permanent hearing problems. If t he noise fro m the machine is too loud, it may cause temporary or p ermanent hearing