Great Plains P15240 Serial No 12880 - Manual (Page 22)

Solo
Operating Instructions
22
4.3 Disc Gangs
As with any disc combination the angle of the
disc gangs is dependant on the type of
operation being carried out in terms of the
degree of soil movement required. The nearer
the disc gang is to minumum angle, the lower
the degree of both soil movement and
penetration that will be achieved. The main
consideration once the discs are working is
to ensure that they are leaving a level surface
with no ridging or trenching either to the
outside or in the centre and are working with
equal effect across the width of each group
of gangs. In some cases it may be necessary
to replace the outer blade on the rear gangs
for one of a smaller diameter to return less
soil, thereby reducing any trough.
It is widely accepted through field experience
that a progressive discing effect will achieve
better results under normal circumstances
than a more aggressive approach.
Gang angling is set / altered using coloured
shims in the hydraulic cylinders. Ensure that
the gang angles are mirrored across the
machine (for example the right hand front
gang should have the same configuration of
shims as the left hand front gang). Front to
rear gang angles may differ as required.
The Solo should be run level; the rear discs
are set lower and will work deeper than the
front.
4. Adjustment / Operation
Fig. 4.02: Front Disc Gang
Fig. 4.03: Disc Gang Angling Cylinder