Great Plains P15061 Serial No 12682 - 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
permissible to use the Coulter Coverer unit
without the scraper “knife” attached in
conditions where it may run clearer without it.
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 the pivoting
adjuster units. Ensure that the gang angles
are mirrored across the machine (for example
if the right hand front gang is set at “3” then
the left hand front gang should be set at “3”
also). Front to rear gang angles may differ
as required.
Position 1 on the gangs = minimum angle,
position 5 = maximum angle.
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 / Locking