Wacker Neuson Telehandler TH412, Operator'S Manual

Page: 258 / 362

7-4
BA TH412 * 06/2017 * 4512_7-1_Hinweise_en.fm
7 Maintenance
Information on residual pressure in the hydraulic sys-
tem
• A fine jet of hydraulic oil under high pressure can
penetrate through the skin.
➥
Seek medical attention immediately if oil penetrates
the skin or eyes.
• Only open hydraulic systems after the pressure in
them has been released.
• Even if the machine is parked on level ground with its
loader unit fully lowered and its engine stopped, there
can still be considerable residual pressure in parts of
the hydraulic system.
• Residual pressure is only slow to ease.
➥
If the hydraulic system has to be opened
immediately after shutting down the machine,
release the pressure in the hydraulic system first.
• On machines equipped with hose burst valves on the
lift and/or tilt cylinder, open the valves in order to lower
the loader unit
– see "Releasing residual pressure in
the hydraulic system" on page 5-82 .
Information on hardware, pipeline, hydraulic hoses
• Replace hydraulic hoses after a maximum six years.
• Have any leaks in the line system rectified immedi-
ately.
• A fine jet of hydraulic oil under high pressure can
penetrate through the skin.
➥
Seek medical attention immediately if oil penetrates
the skin or eyes.
• Do not search for leaks with your hands.
➥
Search for leaks using cardboard or paper on which
the escaping oil can been seen.
• Do not repair damaged pipe lines and hydraulic hoses,
but replace them immediately by new ones.
Information on engine exhaust
• Engine exhaust is hazardous to your health.
➥
Do not breathe in engine exhaust.
• If maintenance and inspection work has to be
performed in enclosed spaces with a running engine,
extract the exhaust gases with an extraction system
and ensure that the space is well ventilated.