. SAFETY PRECAUTIONS FOR MAINTENANCE 2 - 41 PRECAUTIONS WITH HIGH-PRESSURE OIL The hydraulic system is always und er internal pressure. In addition, the fuel piping is als o under internal pressure when the engine is running and i mmediately after the engine is stopped. When ca rrying out inspe ction or replacement of the piping or hoses, check that the internal pressure in the circuit has be is is not done, it may lead to serious person Do not carry out inspection or rep Always release the pressure be INSPECTION AND MAINTENAN If there is any leakage from the pip ing or hoses, the surrounding area will be wet, so che ck for cracks in th e piping and hoses and for swelling in the hoses.
safety glasses and leather gloves. re oil leaking from small holes loss of sight if it contacts your it by a jet of high-pressure oil es, wash the place with clean diately for medical attention. it is stored by an accumulator. g or components. m, please ask your Komatsu al operation. When carry out inspection, wear There is a hazard that high-pressu may penetrate your skin or cause skin or eyes directly. If you are h and suffer injury to your skin or ey water, and consult a doctor imme The pressure in the E.C.S.S. circu Do not remove the E.C.S.S. pipin If it is necessary to remove the distributor to carry out the remov Do not remove the E.C.S.S.
pipin If it is necessary to remove the distributor to carry out the remov PRECAUTIONS WITH HIGH-PRESSURE FUEL When the engine is running, high-pr essure is generated in the engine fuel piping. When carrying out insp ection or maintenance of the fuel piping syste m, stop the engine and wait for at least 30 seconds to a llow the internal pressure to go down before starting the opera tion. HANDLING HIGH-PRESSURE HOSES AN D PIPING sure hoses or piping, it may cause fire or misoperation, and lead to serious If oil or fuel leaks from high-pres personal injury, or death.
If the ho se or piping mounts are loose or oil or fuel is found to b e leaking from th e mount, stop operations and tighten to the specified torque. es or piping are found, please consult your Komatsu distributor. ing problems are found. raulic fitting. d reinforcement wire layer. ion. vering. If any damaged or deformed hos es or piping are found, please consult your Komatsu Replace the hose if any of the follow Damaged hose or deformed hyd Frayed or cut covering or expose Covering swollen in places.
Twisted or crushed movable port Foreign material embedded in co NOISE When carrying out maintenance of th e engine and you are exposed to noise for long period s of time, wear ea r covers or ear plugs while working. loud, it may cause temporary or permanent hearing problems. If t he noise from the machine is too loud, it may cause temporary or permanent hearing