PRECAUTIONS TO BE TAKEN DURING MAINTENANCE 2.8.15 HANDLING HIGH-PRESSURE PIPES Do not bend high-pressure pipes or rub them with abrasive or cutting objects. Do not use any bent or cracked pipes or hoses that were previously rejected because of leaks or fastening de- fects, since they may burst during use. 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 HANDLING HIGH-PRESSURE OIL DANGEROUS!
Do not forget that the work equipment circuits are always under pressure; for this reason, when it is necessary to add or drain hydraulic oil or to perform maintenance operations or inspec- tions on the hydraulic circuit, it is advisable to lower the equip- ment 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 during the inspections and use a piece of cardboard or a sheet of ply- wood to check for oil leakages.
If you are hit by a jet of high-pressure oil or are injured, even if slightly, immediately consult a doctor. RWA01480 CORRECT RWA01580 2.8.17 PRECAUTIONS FOR MAINTENANCE OPERATIONS AT HIGH TEMPERA- TURES AND HIGH PRESSURE When the machine is stopped at the end of operations, the en- gine coolant, the oil and all the components are hot and the hy- dralic circuits are under pressure. In these conditions, if the coolant, the hydraulic oil and the en- gine oil are to be drained in order to change them or the filters, there are serious risks of damage and burns.
Wait for the temperature to lower within the normal operating range 40-45°C (104-113°F) before carrying out the mainte- nance operations in accordance with the procedures indicated in the relevant sections of this manual). RWA00990 60