BA 901/1101 en – Edition 2.1 * 91101b520.fm 5-15
Maintenance
5.7 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 all hydraulically controlled attachments to the ground
• Move all control levers of the hydraulic control valves several times with the safety
bars closed and the starter switched on
• Raise the control lever base
• 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 slack nuts or damaged
hoses and lines are detected.
☞ Contact your Neuson dealer immediately
• Replace the hose or line if one of the problems mentioned below 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 using the filling screen!
☞ Only use authorized oils of the same type – see Fluids and lubricants on
page 5-35
☞ Always add hydraulic oil before the level gets too low– see Adding
hydraulic oil on page 5-17
☞ Contact customer service if the hydraulic system filter is contaminated with
metal chippings. Otherwise, follow-on damage can result!
Checking the hydraulic oil level
Do not add oil if the oil level is above the FULL mark, otherwise the hydraulic
system can be damaged and escaping oil can cause serious injury.
☞ Check the hydraulic oil level each time the machine is put into operation or
once a day
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