. SAFETY SAFETY MAINTENANCE INFORMATION and the 2 - 37 SAFETY RULES FOR HIGH-PRESSURE OIL The hydraulic system is always under internal press ure. When inspecting or replacing piping or hoses, always The hydraulic system always check that the pressur e in the hydraulic circuit has be en released. If t he cir cuit is still und er pressure, i t will lead to serious injury, so alwa ys do as follows. For details of the m ethod of releasing the pressure, see "METHOD FOR RELEASING INTERNAL P RESSURE IN HYDRAULIC CI RCUIT (PAGE 4-37)". If the cir cuit is still under pressure, do not c arry out any i nspection or replacement operat ion.
If there is any leaka ge from the piping or hoses, the surrounding area will be wet, so che ck for cracks in the piping and hoses and for s welling in the hoses. d leather gloves. small holes ntacts your il and suffer n water, and When carry out ins pection, wear safety glasses an d leather gloves There is a hazard th at high-pressure oil leaking from may penetrate your skin or cause blindness if it co eyes directly. If you are hit by a jet of high-pressureo injury to your skin or eyes, wash the place with clea consult a doctor immediately for medical attention. may penetrate your skin or cause blindness if it co eyes directly.
If you are hit by a jet of high-pressureo injury to your skin or eyes, wash the place with clea consult a doctor im mediately for medical attention. PRECAUTION FOR HIGH FUEL PRESSURE High pressure is gene rated inside the engine fuel pipin g when the engine is running. Wh en carrying ou t inspection or maintenance of the fuel piping system, wait for at l east 30 seconds afte r stopping the engine to let the i nternal pressure go down bef ore starting inspection or mainte nance. SAFETY HANDLING HIGH-PRESSURE HOSES If oil or fuel leaks fr om high-pressure hoses, it may cause fire or defectiv e operation, w hich may lea d to s erious injury.
If any loose b olts are found, stop work and tig hten to the specified t orque. If any d amaged hose s are found, stop operations imm ediately and contact your Kom atsu distributor.
Replace the hose if an y of the following problems are Damaged or leakin Frayed or cut cove ring or exposed reinforcement w Covering swollen i Twisted or crushed Foreign material e PRECAUTION FOR HIG H VOLTAGE When the engine is running and immediately after i high voltage is gen erated inside the engine contro engine injector, an touch the inside of d there is danger of electrocu the controller or the engine inje If it is necessary to t ouch the inside of the controller o injector portion, ple ase contact your Komatsu distri