Great Plains Simba UniPress Operator Manual - Manual (Page 30)

30 Simba UniPress
607-114M-ENG
2013-01-25
5.4 Hydraulics
A low oil flow should be used,
i.e., tractor tickover or low flow
selected.
The wing circuit is controlled by an
overcentre valve contained within
the manifold block which positively
locks oil flow until pressurised by
the tractor. System pressure can
be retained in the circuit even
after depressurisation of the
tractor quick release couplings.
Exercise extreme care when
checking the valve or circuits, and
under no circumstances attempt
to adjust or loosen fittings without
prior reference to your authorised
Great Plains dealer, and detailed
maintenance instructions.
5. Servicing and
Maintenance
Follow the safety instructions for
servicing and maintenance.
Maintenance work should only
be undertaken with the machine
unfolded and lowered or on stands
with the hydraulic taps shut.
When working under the machine
ensure that the tractor handbrake
is on.
5.1 Servicing
Your machine has been designed and
constructed for maximum performance,
operational efficiency and operator
friendliness under a wide variety of operating
conditions.
Prior to delivery, your machine has been
checked at the factory and by your authorised
dealer to ensure that you receive a machine
in optimum condition.
To ensure trouble-free operation,
it is important that servicing and
maintenance work is performed at
the recommended intervals.
5.2 Cleaning
In order to ensure that the machine is
always in operating condition and to achieve
optimum performance, perform the cleaning
and servicing work at regular intervals.
Avoid cleaning the roll bearings with a
high-pressure hose or a direct water jet.
The housing, screwed connections and ball
bearings are not watertight.
5.3 Double Disc Axles
The axles on this roller are tensioned by the
main axle through the centre of the rings
and bearings.
Specialist equipment is required
for the disassembly of Double
Disc axles. Please consult your
dealer under any circumstances
that require disassembly of these
axles.
Maintenance of these rollers is limited to
daily greasing of the bearings to flush out
dirt, and regular inspection to ensure the
assemblies are tight, and scrapers are
correctly set. The axles can be tightened
provided the bearing pillar ‘U’ bolts are
loosened to avoid preloading the bearings
as they move sideways to each other.
Ensure the bearing pillars are re-tightened
to the mainframe after this.
5. Servicing and Maintenance