Great Plains P17917B Operator Manual - Manual (Page 20)

X-Press
Operating Instructions
20
4.3 Disc Units
The X-Press features two rows of discs
which chop and mix the crop residue. A
disc spacing of 250mm ensures a fine tilth.
The discs fitted to the X-Press are 500mm
in diameter (20”) and 6mm thick. They are
manufactured from heat treated chrome
boron steel which ensures excellent wear
resistance and enhanced working life. Each
disc is mounted on a Pro-Active sprung leaf
linked to a track rod system. Gang angles
can be varied with ease and accuracy using
a graduated adjuster.
Adjustable angling of the discs (between
10°-25°) ensures penetration and stubble
mixing are achieved in one pass. Working
depth can be varied via the 3 point linkage
and the rear roll linkage.
Fig. 4.03: 3 Point Linkage
4.2 3 Point Linkage
The standard Category 3 linkage at the
front of the X-Press also has the ability to fit
Category 2 tractor linkages by reversing the
upper and lower link pins in their respective
positions.
Fig. 4.04: Discs
Fig. 4.05: Disc Angle Adjustment Jacks
A level, evenly cultivated finish is maintained
by adjusting the balance of soil throw
between the front and rear disc.
Sprung Pro-Active leaves offer protection
against damage as well as offering a degree
of contour following as they flex up and down
in work.
4. Adjustment / Operation