Hydraulic System - New Holland F156.6 Workshop Manual

F156.6 / F156.6A
RELIEVING RESIDUAL PRESSURE
IN THE HYDRAULIC SYSTEM
Only unpressurized hydraulic sys-
tems may be opened. Even when a
machine is parked on a horizontal
surface with its attachments sup-
ported on the ground and its driving
motor switched off, there may still be
substantial residual pressure in
parts of the hydraulic system, e.g.
primary pressure from the last hy-
draulic movements prior to stopping
the machine.
Residual pressure is reduced only
gradually. If an intervention into the
hydraulic system is to be undertaken
immediately after stopping, depres-
surize the system as described in the
Section "Hydraulic System".
SCREWED CONNECTIONS, PIPING,
HYDRAULIC HOSES
Repair any leakages in the piping and
hose system immediately.
A fine, highly pressurized jet of hy-
draulic oil can penetrate the skin.
Never search for leakages with the
fingers, but use a piece of cardboard
and always wear goggles.
If oil has penetrated into the skin,
consult a doctor immediately.
Never repair damaged piping; always
replace it.
Replace hydraulic hoses immedi-
ately on detecting any damage or
moist areas.
Tighten leaking screw plugs only
when the system is depressurized.
Escaping oil is an environmental
hazard.
Carefully read personal and machine SAFETY INSTRUCTIONS (at the beginning of this manual)
SAFETY INSTRUCTIONS
ENVIRONMENTALLY COMPATIBLE
DISPOSAL
Oils, greases, brake fluids, cleaning
agents, solvents and oily compo-
nents, e.g. filters, cleaning rags, re-
placed wear parts and unserviceable
machine parts, must be disposed of
separately in the interests of environ-
mental protection.
Never dispose of such substances
with standard household refuse.
Empty substances into the con-
tainers provided for this purpose.
Even biodegradable, "environmen-
tally friendly" hydraulic oil has to be
disposed of separately like any other
oil.
Never allow oils and oily waste to get
into the soil or into water: environ-
mental hazard!
SEALING FACES
Clean sealing faces prior to as-
sembly.
EXHAUST GASES
Exhaust gases are a health hazard:
never inhale them.
W h e n w o r k i n g o n e n c l o s e d
premises, draw off exhaust gases
with a suction plant and ventilate the
premises well.
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