Great Plains 8-10m Press Range SN 11999-12005 - Manual (Page 27)

27 8-10m Press Range
Operating Instructions
4.10 Out-Rigger Wheel
Adjustment
When in work these units are designed to help
support the wing tips. After making any
adjustment to the working depths it is
important to check that both of these units are
still in light contact with the soil surface.
Adjustment is made by tilting the machine
back onto the rear roll and extending or
contacting the top link bar. Add or remove
shims to give a solid lock. The side mounted
link bar should be tight at all times.
4.12 Transport wheel
adjustment
If when in work the center of the machine
begins to dip or the machine enters a wet spot
it is possible to support weight on the middle
transport wheels.
4.12.1 Adjusting the Transport
Wheel Height
With the manual divert valve in the FOLD
position operate the hydraulics as if the
machine were to be folded, it may be
necessary to remove shims from the tilt rams,
into road transport until the rear roll is clear of
the ground. The wheel cylinders will default to
full stroke.
Now add/remove the required
number of shims to the rod. A 20mm shim will
move the wheels down/up approximately
15mm in the work position a ratio of 4:3. With
the correct number of shims added/removed
lower the machine back into the work
position. Continue to pressure the hydraulics
and crowd the machine on the rear roll. This
will then cause the transport wheels to pull up
and lock against the shims. Swing the manual
divert valve back to the WORK position, lower
the machine and continue with work.
4.11 Levelling Boards
(if fitted)
With the press set level rotate the levelling
boards until they are carrying soil. The
levelling boards will need to run slightly higher
during first pass operations especially on
ploughed land where large clods may not be
able to pass under or between the sprung
leaves.
The boards need to carry a certain amount of
soil to effect a levelling operation and also to
give a clod to clod crushing action. Use the
hydraulics to rotate the levelling boards to
carry more or less soil when levelling the
headland troughs for example.
When reversing the PRESS into corners
ensure that the levelling boards are fully
rotated (fully meshed into DD’s) and the
machine is tilted fully onto its rear roll so all
ground engaging elements are clear of the
ground. Failure to do so could result in serious
damage.
Fig. 4.09: Transport Wheel Adjustment
4. Adjustment / Operation