Great Plains P14175 Serial No 12213 to 12723 - Manual (Page 24)

X-Press
Operating Instructions
24
4.2 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 and being
arranged in a symmetrical format around the
centre line of the machine, crabbing is
eliminated, leaving the machine to pull straight
making the most efficient use of the power
available.
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-Flex sprung
leaf linked to a track rod system. Gang angles
can be varied with ease and accuracy using
a graduated adjuster.
4. Adjustment / Operation
Fig. 4.02: Disc Frame
Adjustable angling of the discs (between 10°-
25°) ensures penetration and stubble mixing
are achieved in one pass. Working depth can
be varied simply via shimmed adjusters. All
this is achieved without compromise to
consolidation.
A level, evenly cultivated finish is maintained
by adjusting the balance of soil throw between
the front and rear disc.
All disc arms are shear bolt protected so they
break back if they meet obstructions. Sprung
Pro-Flex leaves offer further protection against
damage as well as offering a degree of
contour following as they flex up and down in
work.
The centre disc unit can be adjusted
independantly of all other disc units to ensure
a level finish across the machine width.