Maintenance and service work 3.24 Hydraulic system Specific safety instructions regarding the hydraulic system Danger! Danger of burns! Do not perform maintenance work on a hot diesel engine and hydraulic system!
☞ Wait at least 10 minutes after stopping the diesel engine until the hydraulic system has cooled down ☞ Wear protective gloves and clothing during maintenance work
• Release the pressure in all lines carrying hydraulic oil prior to any maintenance and repair work. To do this: • Lower all hydraulically controlled attachments to the ground, stop the diesel engine and switch off ignition • Use the parking brake to park the machine safely and to prevent it from rolling away • Move all control levers of the hydraulic control valves several times • Lower the telescopic boom if it is raised • Wear protective clothes during maintenance work • If the hydraulic oil in the sight glass is cloudy, this indicates that water or air has penetrated the hydraulic system. This can cause damage to the hydraulic pump! • Have the hydraulic oil replaced by an authorised workshop
Caution! Contaminated hydraulic oil, lack of oil or wrong hydraulic oil carries a danger of severe damage to the hydraulic system! ☞ Observe the following instructions: • Take care to avoid contamination when working! • Always fill up hydraulic oil in time using the filling screen • Only use authorised oils of the same type – see Fluids and lubricants on page 3-4 • If the hydraulic system is filled with biodegradable oil, then only use biodegradable oil of the same type for filling up – observe the sticker on the hydraulic oil tank • Have the hydraulic oil replaced by an authorised workshop only – see Maintenance plan (overview) on page 3-5
Serv-HB 40702 – Edition 2.0 * 407-02s0322_Wartung.fm
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