Great Plains DVN8324 Operator Manual - Manual (Page 43)

Great Plains Manufacturing, Inc. Operating Instructions 39
11/25/2013 550-466M
Refer to Figure 31
Field Operation of Disc Gangs
4. Adjust the disc or coulter gangs to run 1.27-2.54 cm
(0.5-1 in) shallower than the cultivator sweeps by using
the gang cylinders. 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 45.7 cm (18 in)
blades that are nearing the end of their wear life).
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 cylinder stop at the front of the front of
the unit to maintain a constant depth after raising and
lowering.
7. Make any fine tuning adjustments on the leveling of the
machine.
Scraper Settings
The scrapers are set at the factory but should be
checked periodically and may need re-adjusted as fol-
lows:
• Disc scrapers will need the bolts (rigid scraper) or u-
bolts (spring scraper) loosened up and slid into blade
until they just touch the blade, and torqued to specs.
• Coulter scrapers u-bolts will need loosened and scrap-
ers centered between coulter blades, and torqued to
specs.
Figure 31
Disc Gang Field Operation
41600