PRECAUTIONS FOR MAINTENANCE 2.8.7 USE OF THE ENGINE DURING MAINTENANCE OPERATIONS During maintenance operations, let the engine run only when indispensable. If it is necessary to have the en- gine running (for example, to wash the cooling circuit or to check the functionality of the alternator), an operator should constantly remain in the cab, in order to be able to stop the engine whenever necessary. During maintenance operations with running engine, never move the control locking devices from the “lock” po- sition or change the position of the gearshift lever. Service personnel must not move any control lever.
When carrying out maintenance operations, do not touch the moving parts of the machine and avoid wearing large and loose clothes. 2.8.8 PERIODICAL CHANGE OF THE PARTS THAT ARE CRITICAL FOR SAFETY Periodically change the following parts, which are important to prevent fires. Fuel supply system: fuel delivery and return pipes. Hydraulic system: main delivery pipes of the hydraulic pump. Hydraulic system: work circuit pipes from the distributor to the hydraulic cylinders. Even if they seem to be in good conditions, these components must be periodically changed with new ones. In fact, these components tend to deteriorate over time.
If one of these parts is defective, change or repair it even if the change interval has not elapsed yet. (See “4.6 PERIODICAL CHANGE OF THE COMPONENTS CONNECTED WITH SAFETY). 46