Great Plains P17897B Operator Manual - Manual (Page 19)

19 X-Press
Operating Instructions
2.7 Preceding & Trailing
Implements
2.7.1 Hitching a Disc Harrow
to the X-Press
1. Remove the transport straps from the
disc harrow, exercise great CARE
when extending the axle cylinder.
2. Reverse the disc harrow up to the
X-Press drawbar ensuring that the two
drawbars are aligned allowing a slight
clearance to enable the machines to
be coupled together.
3. Lower the disc harrow to the ground.
4. Connect the four hydraulic hoses
from the X-Press into the disc harrow
rear outlets ensuring that the two
wing hoses are together and the two
drawbar cylinder hoses are together.
Ensure that the folding circuits and lift
drawbar circuits are coupled correctly.
3. Your brakes will now be ON and will
hold, ensuring they have been adjusted
and maintained correctly, the machine
in position. (note: if the machine‘s tank
is drained of air once all lines have
been detached the brakes will come off
(same situation as pushing the shunt
valve).
4. Continue de-coupling the machine until
it is fully disconnected.
By following the above instructions
you will see that at NO point
in the coupling or decoupling
process has the red line been
left in the tractor on its own.
This is intentional and should be
considered the ‘rule’ to coupling
the hoses.
5. Raise the X-Press drawbar above the
disc drawbar (200mm approx.).
6. Raise the disc harrow to the same
height as the X-Press drawbar then
reverse the disc harrow to couple
the two machines together. A pair
of additional taps (P00774) may be
required in the lift circuit of the disc
harrow or the X-Press. This will isolate
the drawbar circuit.
7. Operate the hydraulics to lower the rear
axle and drawbar, tilting the X-Press
onto the road transport wheels. Fully
extend the drawbar cylinders.
8. Operate the hydraulics to fold the
wings.
9. Operate the hydraulics to lift the disc
harrow into the transport position.
10. Fit the disc harrow transport straps.
11. Fit the X-Press wing transport strap to
tie the two wing sections together.
12. Ensure that parking stands are locked
up in their work position.
When the X-Press is used in tandem with
a disc harrow the disc should be set to
the operators manual i.e. front disc gang
to be 50mm closer to the ground than the
corresponding disc blade on the rear gang.
With both machines in the transport position
i.e. raised and folded, the top frame of the
disc harrow should be slightly nose down
or horizontal even when the downward load
from the X-Press is applied to the drawbar
of the disc harrow.
The frame may be levelled by altering the
rearward tilt of the X-Press to increase or
reduce the loading on the disc rear drawbar.
2. Transportation / Installation