PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.15 PRECAUTIONS CONCERNING HIGH-PRESSURE HOSES q Do not bend high-pressure hoses or rub them with sharp or abrasive objects. Do not use bent or cracked rigid tubes or hoses that were previously rejected because of leaks or fastening de- fects, since they may burst during use. q Always repair or replace any loose or faulty fuel or oil pipe. Any leakage of fuel or oil may cause fires. 2.8.16 PRECAUTIONS TO BE TAKEN WHEN WORKING ON HIGH-PRES- SURE SYSTEMS DANGEROUS!
q Do not forget that the work equipment circuits are always un- der pressure; for this reason, when it is necessary to add or drain hydraulic oil, or service or inspect the hydraulic circuit, it is advisable to lower the equipment to the ground and completely release the pressures and the residual pressure present in the tank. Small leakages from pipes under pressure and the resulting jets are extremely dangerous, since they can perforate the skin and penetrate in the blood circulation or injure the eyes. For this reason, always wear goggles and thick gloves du- ring the inspections and use a piece of cardboard or a sheet of plywood to check for oil leakages.
If you are struck by a jet of high-pressure oil or are injured, even if slightly, consult a doctor immediately. RWA01480 CORRECT RWA01580 2.8.17 PRECAUTIONS FOR MAINTE- NANCE WORK INVOLVING HIGH TEMPERATURES AND PRES- SURES q When the machine is stopped at the end of work, the engine coolant, the oil and all the components are hot and the hydralic circuits are under pressure. In these conditions, if the coolant, the hydraulic oil and the engine oil are to be drained in order to change them or the filters, there are serious risks of injuries and burns.
Wait for the temperature to lower within the normal operating range (40-45єC) before carrying out the maintenance opera- tions in accordance with the procedures indicated in the rele- vant sections of this manual. RWA00990 48