. SAFETY PRECAUTIONS FOR MAINTENANCE from touching touched by hand. Then loosen the cap or plug slowly to release the internal pressure and remove the cap or plug. 2 - 37 PRECAUTIONS WITH HIGH-TEMPERATURE OIL To prevent burns from hot oil spurting out o To prevent high-tempera the oil to cool ture parts when checking or drainin down to a temperature where the c PRECAUTIONS WITH HIGH-PRESSURE OIL The hydraulic system is always under internal pr essure. In addition, the fuel piping is als o under internal p ressure when the en gine is running and immediately after the engine is stopped.
When ca rrying out inspe ction or replacement of the piping or hoses, check that t he internal pressure in the circuit has be is is not done, it may l ead to serious personal injury or d Do not car ry out inspection or replacement wo Always rel MAINTEN ease the pressure before starting ANCE WHEN ENGINE IS RUNNIN If there is a ny leakage from the piping or hoses , the surrounding area will be wet, so che ck for cracks in th e piping and hoses When carr and for swelling in the hoses. es and leather gloves. from small holes if it contacts your high-pressure oil place with clean edical attention.
y out inspection, wear safety glass There is a hazard 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 rate your skin or cause loss of sight s directly. If you are hit by a jet of njury to your skin or eyes, wash the consult a doctor immediately for m PRECAUTIONS WITH HIGH-PRESSURE FUEL When the eng ine is running, high-pressure is ge nerated in the engine fuel piping.
When carrying out insp ection or maintenance of the fuel piping system, stop the e ngine and wait for at least 30 seconds to a llow the internal p ressure to go down b efore 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 fue personal in stop opera If any dam jury, or death. If the hose or piping mounts are loose or oil or fuel is found to b e leaking from th e mount, tions and tighten to the specified to rque. are found, please consult your Komatsu distributor. s are found. ent wire layer.
aged or deformed hoses or piping are found, please consult your Komatsu Replace the h ose if any of the following problem Damaged hose or deformed hydraulic fitting. Frayed or cut covering or exposed reinforcem Covering s wollen in places. crushed movable portion. aterial embedded in covering. Twisted or Foreign m