Great Plains 8-10m Press Range SN 11999-12005 - Manual (Page 28)

8-10m Press Range
Operating Instructions
28
4. Adjustment / Operation
4.14 Work Instructions
Driving speed
The Press can be driven at speeds of up to
14 km/h.
This depends on the field conditions (type of
soil, surface trash, etc.).
Drive more slowly if the conditions are difficult
or a firmer finish is required.
Turning:
Before turning, the machine should
be eased out of work while driving.
Likewise, it should eased back into
work once the turn has been
completed.
When reversing the (ie. into the
corner of a field) the machine should
be tilted onto its rear roll. On
machines fitted with levelling boards
it is imperative that the levelling
board cylinders are fully extended
(intermeshing the sprung leaves with
the DD roll) before reversing.
Serious damage can occur if the
levelling board leaves are in contact
with the soil when reversing the
machine.
4.13 Adjusting Disc Angle
(X-Press model only)
If the machine is fitted with a levelling board
then you must first swing the valve from
BOARDS to ANGLE.
Starting with the machine stationary, operate
the main tilt rams (RED) to roll the machine
onto the rear roll. Operate the hydraulics
(ORANGE/GREEN) so that the disc angle
rams open to full stroke. Add/remove the
required number of shims. A 20mm shim will
give an angle adjustment of 4° a ratio of 5:1.
Once the required number of shims are in
place, operate the hydraulics to close the
rams nipping the shims. If a levelling board is
fitted turn the valve back from ANGLE to
BOARDS.
Fig. 4.10: Disc Angle Adjustment