3-36 SHB 803 en – Edition 2.4 * 803s314.fm
Maintenance
3.15 Hydraulic system
Specific safety instructions
• Release the pressure in all lines carrying hydraulic oil prior to any maintenance and
repair work. To do this:
• Lower the boom or the attachment to the ground
• Move all control levers of the hydraulic control valves several times
• Raise the lock lever
• Hydraulic oil escaping under high pressure can penetrate the skin and cause serious
injury. Always consult a doctor immediately even if the wound seems insignificant –
otherwise serious infections could set in!
• 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!
• Oil or fuel flowing out of high pressure lines can cause fire or malfunctions, and serious
injury or damage to property. Interrupt work immediately if loose nuts or damaged
hoses and lines are detected
☞Contact a Wacker Neuson dealer immediately. Have a line replaced if one of the fol-
lowing problems is detected:
☞Damaged or leaky hydraulic seals
☞Worn or torn shells or uncovered reinforcement branches
☞Expanded shells in several positions
☞Entangled or crushed movable parts
☞Foreign bodies jammed or stuck in protective layers
Dirty hydraulic oil, lack of oil or wrong hydraulic oil –
Risk of serious damage to the hydraulic system!
☞Take care to avoid dirt when working!
☞Always add hydraulic oil by means of a screen or the return filter!
☞Only use authorized oils of the same type
– see “Fluids and lubricants” on page 3-2
☞Always add hydraulic oil before the level gets too low
– see “Adding hydraulic oil” on page 3-38
☞If the hydraulic system is filled with biodegradable oil, then only use biode-
gradable oil of the same type for adding oil – observe the sticker on the
hydraulic oil reservoir!
☞Contact your dealer immediately if the hydraulic system filter is contami-
nated with metal chippings. Otherwise, follow-on damage can result!
Collect drained hydraulic oil and biodegradable oil in a suitable container!
Dispose of drained oil and used filters by an ecologically safe method.
Always contact the relevant authorities or commercial establishments in
charge of oil disposal before disposing of biodegradable oil.
Maintenance