Great Plains 9756PP Operator Manual - Manual (Page 21)

Great Plains Manufacturing, Inc. Operating Instructions 17
02/17/2014 580-043M
Folding Instructions for 5 or 7 Section Plains Plow
5 Section Machines
17. When operating the plains plow, the hydraulic flow
settings for the lift system may be set at or near full
flow to allow optimum lift and lower cycle times. The
fold system flow settings should be reduced to 10-15
gpm (usually 1/2 full flow on most tractors). This will
prevent damage to the fold system during the folding
and unfolding process.
18. When folding the machine to transport position, it is
important that the outside wing is folded completely
before inner wings begin to fold. If the inner wings
are folding at the same time as the outer wings, the
hydraulic flow is too high and will cause damage to
the machine. Reduce the flow! In some cases, if the
flow settings are difficult to change, when the inside
wing begins to fold before the outside wing is com-
pletely folded, center the fold lever. This will allow for
the oil to transfer from the outer cylinders to the inner
cylinders and the inside wings will fall. Once the out-
side wings are completely folded, proceed with fold-
ing the inner wings.
19. When unfolding the machine, the inner wings need
to be completely unfold before the outer wings begin
to unfold. If the outer wings are unfolding at the same
time as the inner, the flow is too high and damage
may occur. If adjusting the flow is difficult on your
tractor, you may need to center the hydraulic lever at
some point to allow the inside wings to stay ahead of
the outer wing. Once the inner wings are completely
to the ground, continue the unfolding process for the
outer wings.
7 Section Machines
20. When folding or unfolding 7 section machines, it is
important that the hydraulic flow is not too high, 10-
15 gallon per minute is more than adequate for fold-
ing or unfolding. On most tractors, this is about 1/2
the maximum flow available. Prior to unfolding the
plains plow, remove all transport safety pins. Do not
remove pins if there is pressure against pins. If pres-
sure exists, pull all the cylinders in, to relieve the
pressure from pins.
21. After pins are removed, close the small cylinder
between the two sections that remain on the ground.
This will make these sections temporarily rigid.
Begin the unfolding process. Make sure the inner
wings unfold ahead of the outer wings. If the outer
wings are unfolding along with the inner, slow the
flow down. If this continues at a slower flow rate, cen-
ter the hydraulic lever to allow the inner wings to get
ahead of the outer wings. Once the inner wings are
completely unfolded, continue to unfold the outer
wings. Once the outer wings are unfolded com-
pletely, extend the small cylinders between the cen-
ter sections to allow these to flex in the field.
22. When folding the 7 section machines, first close the
small cylinder between the 2 sections that remain on
the ground. Star the unfolding process. Make sure
the outside wings fold completely before the inside
wings start to fold. If the inner wings begin to fold too
early, slow the outer wings to get ahead of the inner.
Once the outside wings are folded completely, fold
the inner wings and then the left hand inner most
wing. Once unit is completely folded, extend the
small cylinder between the two sections on the
ground to allow the sections to flex during transport.
Note: Failure to follow these steps may cause damage
to the fold cylinders and to the folding mechanisms
and will void the manufactures warranty of these
parts.