SHB 28Z3 EN – Edition 2.0 * 28z3s314.fm 3-41
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.
• Fold the control lever base up.
• Hydraulic oil escaping under high pressure can penetrate the skin and cause serious
injuries. Therefore always consult a doctor immediately, even in the case of minor
wounds – 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 severe
injuries or damage to property. Interrupt work immediately if slack nuts or damaged
hoses and lines are detected.
☞ Contact a Wacker Neuson dealer immediately.
• Have the flexible line replaced if one of the following 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
Caution!
Dirty hydraulic oil, lack of oil or wrong hydraulic oil –
Danger of severe damage to the hydraulic system!
☞ Take care to avoid contamination when working!
☞ Always fill in hydraulic oil using the filling screen!
☞ Only use authorised oils of the same type – see Fluids and lubricants on
page 3-2
☞ Always fill up hydraulic oil before the level gets too low – see Filling up
hydraulic oil on page 3-43
☞ If the hydraulic system is filled with biodegradable oil, then only use
biodegradable oil of the same type – observe the sticker on the hydraulic oil
tank!
☞ Contact customer service if the hydraulic system filter is contaminated 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
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