Great Plains ADI445 Operator Manual - Manual (Page 35)

33
Section 3 Adjustments
5/11/05 Model 2250 Air Drill Implement 160-192M
Great Plains Mfg., Inc.
Section 3
Adjustments
Setting the Seeding Depth
And Leveling Front to Rear
IMPORTANT: When setting the depth and leveling from
front to rear, remember that the gauge wheels set the
depth for the front of the drill and press wheels are used
to level the drill from front to rear.
1. A set of depth control stop collars are supplied with the
implement for adjusting the depth of the front of the
implement. This is accomplished by adding or remov-
ing the collars on the outside caster wheel cylinder re-
fer to Figure 3-1.
2. Set the lifting hydraulics so that the front rank of the
openers or coulters is operating at the desired depth.
3. Add or remove stop collars on both outside caster
wheel cylinders until collars cover extended portion of
the cylinder rods.
4. Check the depth of the back rank openers. If they are
not the same as the front rank, the press wheels must
be adjusted.
Refer to Figure 3-2:
5.
To adjust the press wheels, remove the handle lock
pin and slide the handle back. To raise the seeding
depth, turn the handle counter-clockwise (as viewed
from above). To lower the seeding depth turn the han-
dle clockwise so that the distance from the handle to
NOTE: In order to provide equal seeding depth for all
openers, the drill must be level from front to rear and
from side to side. Side to side leveling should be done
when the drill is assembled, refer to Side to Side
Frame Leveling under the “Assembly and Setup”
section on page 19 and should not require readjust-
ment. Make sure that the lift cylinders are in phase as
instructed in the “Operating Instructions” section
on page 29. Make sure the fold cylinders are fully ex-
tended.
Depth Control Stop Collars
Figure 3-1
15186
the press wheels decreases.
The press wheel down force tube has two sets of holes
for the press wheel adjustment handle weldment. The
adjustment weldment should be in the lower two holes
if the implement is equipped with C-shank openers and
the upper two holes if the implement is equipped with
floating hoe openers. Illustration shows weldment in
position for C-shank operation.
Individual Opener Adjustments
C-Shank Style Openers
The C-shank style openers do not require any adjust-
ments. The hoe boot selected by the owner to be put on
the C-shank may need to be adjusted according to its
manufacturer’s recommendations.
!
DANGER!
The C-shank opener comes equipped with a pre-compressed
spring. Any attempt to remove or adjust the spring could release
the spring’s stored energy and could result in serious injury or
death.
Floating Hoe Openers
Spring reset and shear bolt floating hoe openers are ad-
justable for both depth and down pressure. Before adjust-
ing any openers be sure the implement is level from side to
side, see Side to Side Frame Leveling under the “Assem-
bly and Setup” section on page 19. Also be sure the im-
plement is level from front to rear.
Shear Bolt and Spring Reset Opener Depth
Some floating hoe opener depths may need to be adjusted
independently of the others (openers running in tire tracks
for example). To change individual floating hoe opener
depths, remove the lower spring rod retaining bolt, move
the rod to a hole ahead or behind the current one, and re-
install the bolt, refer to Figure 3-3.
Press Wheel Adjustment
Figure 3-2
15189
Floating
Hoe
Position
C-Shank
Position