Great Plains DVN8552 Operator Manual - Manual (Page 20)

16 8321-8552DV Table of Contents Index Great Plains Manufacturing, Inc.
550-353M 2014-02-12
Refer to Figure 9
Field Operation of Disc Gangs
4. Adjust the disc or coulter gangs to run 1/2” to 1” shal-
lower than the cultivator sweeps by using the gang cyl-
inders. The pointer on the gauge should read +1/2” to
+1”. Running the disc gangs slightly above the sweeps
allows the sweeps to work in firm ground which
improves trash flow and incorporation as well as leaving
a smoother, more level seed bed.
5. Do not run the disc or coulter gangs in the RED ZONE.
Running the disc gangs too deep will cause plugging of
trash as well as excessive wear on the gangs, gang
springs and Discovator frame. Running disc gangs too
deep may also tend to hold the front of the entire
machine out of the ground. (The disc gangs should only
be run in the RED ZONE when using 18” blades that
are nearing the end of their wear life).
Refer to Figure 10
6. You are ready to operate the machine in the field at this
point. You should have someone observe the machine
during operation for levelness, front to rear and side to
side. When you lower the machine to the desired work-
ing depth, set the depth stop
at the front of machine
to ensure the unit will operate at a consistent depth
every pass. After setting the stop, if a change of depth is
desired, 1 full turn of the handle
either in or out will
change the depth approximately 1/4” up or down
respectively.
7. Make any fine tuning adjustments on the leveling of the
machine.
.eps
100%
Figure 9
Disc Gang Field Operation
41600
.eps
100%
Figure 10
Depth Stop Adjustment
42339
1
2
1
2