. SAFETY PRECAUTIONS FOR MAINTENANCE 2 - 40 PRECAUTIONS WITH HIGH-PRESSU RE OIL The hydraulic s ystem is always und er internal pressure. In addition, the fuel piping is als o under internal pressure when the eng ine is running and immediately after the engine is stopped. When ca rrying out insp ection or replacement of the piping or hoses, check that the internal pressure in the circuit has be his is not done, it may le ad to serious person al injury or death.
Alway Do not carry out inspection or re placement work with the Always rele ase the pressure be HYDRAULI C CIRCUIT (PAGE 4 If there is an y leakage from the pi ping or hoses, the surrou nding area will be wet, so che ck for cracks in t he piping and hoses a nd for swelling in the When carry out inspection, wear safety glasses and leat There is a ha zard that high-press ure oil leaking from smal 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 atte may penetra te 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 in jury to your skin or e yes, wash the place with water, and c onsult a doctor imme diately for medical atte PRECAUTIONS WITH HIGH-PRESSURE FUEL When the engi ne is running, high-pr essure is generated in t he engine fuel piping.
When carrying out insp ection or maintenance o f the fuel piping syste m, stop the engine and w ait for at least 30 seconds to a llow the internal pressure to go down bef ore starting the oper ation. HANDLING HIGH-PRESSURE HOSES AND PIPING If oil or fuel leaks from high-pressure hoses or piping, i t may cause fire or misoperation, and lead to serious If oil or fuel leaks from high-pres misopera personal inju ry, 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 operati ons and tighten to th e specified torque.
If any dama ged or deformed hos es or piping are found, please consult your Komatsu Replace the ho se if any of the follo wing problems are found Damaged h ose or deformed hyd raulic fitting. Frayed or c ut covering or expos ed reinforcement wire la Covering sw ollen in places. Twisted or c rushed movable por Foreign mat erial embedded in c