SAFETY MAINTENANCE INFORMATION SAFETY PRECAUTION FOR HIGH FUEL PRESSURE High pressure is generated inside the engine fuel piping when the engine is running. When carrying out inspection or maintenance of the fuel piping system, wait for at least 30 seconds after stopping the engine to let the internal pressure go down before starting inspection or maintenance. SAFETY HANDLING HIGH-PRESSURE HOSES q If oil or fuel leaks from high-pressure hoses, it may cause fire or defective operation, which may lead to serious injury. If any loose bolts are found, stop work and tighten to the specified torque. If any damaged hoses are found, stop operations immediately and contact your Komatsu distributor.
Replace the hose if any of the following problems are found. q Damaged or leaking hydraulic fitting. q Frayed or cut covering or exposed reinforcement wire layer. q Covering swollen in places. q Twisted or crushed movable portion. q Foreign material embedded in covering. PRECAUTION FOR HIGH VOLTAGE q When the engine is running and immediately after it is stopped, high voltage is generated inside the engine control- ler and the engine injector, and there is danger of electrocu- tion. Never touch the inside of the controller or the engine injector portion. If it is necessary to touch the inside of the controller or the engine injector portion, please contact your Komatsu distribu- tor.
WASTE MATERIALS To prevent pollution, pay careful attention to the method of disposing of waste materials. q Always put oil drained from your machine in containers. Never drain oil directly onto the ground or dump into the sew- age system, rivers, the sea, or lakes. q Obey appropriate laws and regulations when disposing of harmful objects such as oil, fuel, coolant, solvent, filters, and batteries. AIR CONDITIONER MAINTENANCE If air conditioner refrigerant gets into your eyes, it may cause blindness; if it touches your skin, it may cause frost- bite. Never touch refrigerant. 2-40