Great Plains 8-10m Press Range SN 12672+ Operator Manual - Manual (Page 26)

8-10m Press Range
Operating Instructions
26
This will push the wheel cylinders open whilst
at the same time extend the rear roll cylinders.
Remove the required number of shims from
the rear roll cylinders, if weight is being support
on the transport wheels it may be necessary
to add shims to the wheel cylinders. Once the
required amount of shims have been removed
from the rear roll, pressure the circuit in the
opposite direction to draw the roll cylinders
closed and then draw the wheel cylinders
closed. NOTE: it is important to pressure the
hydraulics until all shims, with special note
being made to the wheel cylinders, are
clamped tight. Making sure there is no one
near the machine lower the machine back into
the work position. As long as the power to the
limit switch is still on then the press will return
to the previously set pitch.
4.10.2 Lifting the Tines Out of
Work
Operate the main tilt circuit (red) to extend the
cylinders and support the weight of the
machine on the rear roll, continue to extend
the cylinders until all tines/discs are out of work.
Now, operate the wheel cylinder circuit (blue).
This will push the wheel cylinders open whilst
at the same time extend the rear roll cylinders.
Add the required number of shims to the rear
roll cylinders, if weight is being supported on
the transport wheels it may be necessary to
remove shims from the wheel cylinders. Once
the required number of shims have been
added to the rear roll, pressure the circuit in
the opposite direction to draw the roll
cylinders closed and draw the wheel cylinders
closed. NOTE: it is important to pressure the
hydraulics until all shims, with special note
being made to the wheel cylinders, are
clamped tight. Making sure none is near the
machine lower the machine back into the
work position. As long as the power to the limit
switch is still on then the pressure will return
to the previously set pitch.
4.10 Adjusting Tine Depth
(UniPress and CultiPress models only)
Crowd the machine rearwards until the weight
of the machine is on the rear DD roll. Continue
to extend the tilt rams until they are at full stroke.
Stop the tractor and TURN OFF THE SHUT
OFF TAPS AT THE RAM PORTS. This will
then allow access under the machine. Once
all tine have been adjusted, ensure none is
under or near the machine open the shut off
taps on the ram ports and then lower the
machine until the working elements are on the
ground.
4.10.1 Placing Tines Deeper
into Work
Operate the main tilt circuit (red) to extend the
cylinders and support the weight of the
machine on the rear roll, continue to extend
the cylinders until all tines/discs are out of work.
Now, operate the wheel cylinder circuit (blue).
4. Adjustment / Operation
4.9 Depth Control
With the wing cylinders fully extended and the
machine tilted back onto the rear roll the
machine is ready for setting.
On the UniPress and CultiPress models there
are two main methods of adjustment.
• Coarse adjustment can be made by
lowering or lifting the tines within the
mounting plates, this will give a +/-25mm
depth change per hole.
• Fine adjustment can me made by
adding or removing shims on the rear
roll cylinders.
On the X-Press models depth adjustment is
made in the same way as the FINE
adjustment method mentioned above.