Great Plains ADC1150 Operator Manual - Manual (Page 62)

60
Section 4 Adjustments
Model 1150 1995 - 1997 167-058M 7/28/10
Great Plains Mfg., Inc.
Setting the Seeding Depth
and Leveling Front-to-Rear
IMPORTANT: When setting the depth and leveling front-
to-rear remember that the gauge wheels set the depth for
the front of the drill and the press wheels are then used to
level the drill from front-to-rear.
1. A depth control stop clamp and plunger valve are in-
stalled on one of the cylinders directly behind the cart
frame, refer to Figure 4-11. Loosen the bolt and slide
it all the way down.
2. Set the lifting hydraulics so that the front rank of the
openers is seeding at the desired depth.
3. Slide the depth stop clamp up the cylinder rod as far
as possible making sure it fully depresses the plunger
rod, refer to Figure 4-12.
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.
5. To adjust the press wheels, remove the handle lock
pin and slide the handle back. To raise the seeding
depth turn the rod counter-clockwise, when viewed
from above, so that the distance from the handle to the
press wheels increases. To lower the seeding depth
turn the rod clockwise, when viewed from above, so
that the distance from the handle to the press wheels
decreases, refer to Figure 4-13.
Individual Opener Adjustments
Individual openers are adjustable for depth. Spring reset
and shear bolt openers are also adjustable for down pres-
sure. Before adjusting any openers be sure the drill is level
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, Side-to-Side
Frame Leveling under the “Implement Assembly
and Setup” section on page 28, and should not re-
quire re-adjustment. Make sure that the lift cylinders
are in phase as instructed in the Implement Lifting
System under the “Operating Instructions” section
on page 41. Make sure the fold cylinders are fully ex-
tended.
Depth Control Stop
Figure 4-11
14500
Plunger Location
Figure 4-12
14500
Plunger
Press Wheel Adjustments
Figure 4-13
14501
Lock Pin
Lo
wer
or
Deeper