. SAFETY PRECAUTIONS FOR MAINTENANCE 2 - 38 PRECAUTIONS WITH HIGH-PRESSURE OIL The hydraulic system is always under inte rnal pressure. In addition, t he fuel piping is als o under internal pressure when the eng ine is running and imme diately after the engine i s stopped. When performing insp ection or replacement o f the piping or hoses, chec k that the internal pressure in the circuit has be his is not done, it may le ad to serious personal inju ry or death.
Always do as f Do not perfo rm inspection or replacem ent work with the circuit und If there is an y leakage from the piping or hoses, the surrounding are a will be wet, so che ck for cracks in t he piping and hoses a nd for swelling in the hose When perfo rm inspection, wear protect ive eyeglasses and leather There is a h azard that high-pressure oil may penetra te your skin or cause loss skin or eyes directly. If you are hit by and suffer in jury to your skin or eyes, w water, and c onsult a doctor immediatel PRECAUTIONS WITH HIGH-PRESSURE FUEL When the engi ne is running, high-pressur e is generated in the engin e fuel piping.
When performing insp ection or maintenance o f the fuel piping system, sto p the engine and wait for at l east 30 seconds to a llow the internal pressure to go down be fore starting the operation. HANDLING HIGH-PRESSURE HOSES AND PIPI NG hoses or piping, it may cause fire or misoperation, and lead to serious If oil or fuel leaks from high-pressure personal inj ury or death. If the hose or p iping mounts are loose or o il or fuel is found to b e leaking from th e mount, stop operati ons and tighten to the spec ified torque. piping are found, consult your Komatsu distributor. roblems are found. fitting. forcement wire layer. g.
If any dama ged or deformed hoses or piping are found, consult yo ur Komatsu distribu Replace the h ose if any of the following p Damaged h ose or deformed hydraulic Frayed or c ut covering or exposed rein Covering s wollen in places. crushed movable portion. Twisted or Foreign ma terial embedded in coverin NOISE When performi ng maintenance of the engi ne and you are exposed to noise for long period s of time, wear e ar covers or ear plugs w hile working. it may cause temporary or permanent hearing problems. If t he noise fro m the machine is too loud, it may cause temporary or permanent hearing