Great Plains P18028E Operator Manual - Manual (Page 22)

DTX
Operating Instructions
22
4.7 Work Settings
Optimum performance has been found to
be achieved when the DD roll rings have
worn away the painted finish leaving a
smooth shiny surface. When the DD rings
are new or rusty, soil may tend to pick up on
the surface and blockage may occur, this
will reduce when the rings are shiny again.
The DTX should be run with the chassis level
to slightly tail low. In practice it is possible
to use the DTX on ground conditions that
are unsuitable to achieve the desired
effect, and it is usually possible to operate
the DD roll without regular blockage under
such unsuitable conditions, assuming that
the roll assemblies are tight, the scrapers
correctly adjusted and rings smooth. As
such, especially under wet conditions, it is
advisable to check on the cultivation effect
of the DTX.
The DTX should be lifted fully clear of the
ground for all headland turns. Turning with
the tines, disc units or roller on the ground
could lead to damage of these components.
In work, the tractor lower link arms
should be run in position control with draft
introduced if required.
4.8 General Rules when
Setting the DTX
 The lighter the land conditions the
less the disc angle required and the
forward speed can be increased.
 The wetter the land conditions the less
the disc angle required and the forward
speed will need to be decreased.
 Heavier land will require more of a disc
angle and a slower forward speed.
 The more the trash the less the angle
on the discs and forward speed will
have to be decreased.
 On ploughed land reduce the disc
angle to give a cutting/chopping
action.
 In hard conditions increase the disc
angle to increase penetration.
4. Adjustment / Operation