Wacker Neuson 28Z3, Operator'S Manual

Page: 162 / 200

5-16
OM 28Z3 US – Edition 2.0 * * 28Z3b520.fm
Maintenance
5.7 Hydraulic system
Specific safety instructions
Warning!
Pressurized hydraulic oil hazard. Hydraulic oil escaping under high pressure
can catch fire, damage property, penetrate the skin and cause severe burns
and injuries.
• Do not operate the machine with leaking or damaged hydraulic system
components.
• Use a piece of cardboard to diagnose the source of hydraulic leaks.
• Hydraulic oil can be hot and can cause serious burns if contact is made
with skin. If contact occurs with hot oil, seek immediate medical attention
and treatment for the burn.
• Wear safety glasses/goggles to avoid eye contact. If oil contacts the eye
flush immediately with clean water and seek emergency medical treat-
ment.
• Seek immediate medical attention if oil penetrates the skin. Oil can
cause serious infections.
• 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
• Fold the control lever base up
• If the hydraulic oil in the sight glass is cloudy, this indicates that water or air has
penetrated the hydraulic system. This may cause damage to the hydraulic pump!
• Replace the hose or line if one of the problems mentioned below is detected.
☞
Damaged or leaky hydraulic seals.
☞
Worn or damaged hose covering or uncovered reinforcement branches.
☞
Bulging hose coverings in several positions.
☞
Entangled or crushed movable parts.
☞
Foreign bodies jammed or stuck in protective layers.
NOTICE
Possible equipment damage. Contaminated hydraulic oil, lack of oil, or
the wrong hydraulic oil can severely damage to the hydraulic system.
• Take care to avoid contamination when working.
• To avoid dirt contamination, use the screened inlet when adding oil.
• Only use authorized oils of the specified type.
– see chapter 5.14 Fluids
and lubricants on page 5-34
• Always add hydraulic oil before the level gets too low. – see Adding
hydraulic oil on page 5-18
• If the hydraulic system is filled with biodegradable oil, then only use bio-
degradable oil of the same type for filling up. Observe the label on the
hydraulic oil reservoir.
• Contact your Wacker Neuson dealer immediately if the hydraulic system
filter is contaminated with metal shavings.