Great Plains 1007NT Operator Manual - Manual (Page 36)

32 1007NT Great Plains Manufacturing, Inc.
150-290M 10/06/2010
Coulter Depth (Individual Rows)
The running depth of all coulters is adjusted simulta-
neously by changing the tool bar height. Adjusting the
height of a small number of coulters may be useful for
rows in tire tracks.
Adjust individual coulters as follows.
1. On level ground, lower the drill until coulters just
touch the ground.
2. Raise the drill by the extra amount you need to lower
the rows in tracks.
Refer to Figure 20
3.
At each coulter to be adjusted, slightly loosen all six
bolts (
, ) at the mount.
4. Using a rubber mallet, tap the spring bar up or
down until the bottom edge of the coulter disc is at
ground level.
5. Tighten the two clamp bolts until both U-bolts are
firmly against the edge of the spring bar . It is nor-
mal for there to be a small gap between the clamps.
6. Tighten the four U-bolts .
7. Lower the drill and pull forward 30 feet (10m).
8. Check coulter blade to opener blade (furrow center-
line) alignment.
Drill Weight Adjustment
In heavy no-till conditions, or if it is otherwise necessary
to increase coulter spring force, extra frame weight is
probably required (or the higher forces will just lift the drill
off the ground, resulting in uneven planting depth and
unreliable ground drive operation).
Adding weight requires pairs of user-provisioned stan-
dard “suitcase” tractor weights.
The standard includes two brackets. Each bracket
accepts up to seven 100 pound (45 kg) weights. The fol-
lowing table shows the additional force per row that the
kit can provide.
Note: Do not adjust the bar height of all coulters. Use
the depth control valve to set group coulter height
(page 29).
Figure 20
Frame-Mounted Coulter Height
10300
1
2
3
1 2
3
1
3
2
Note: Maximum added weight is 1500 pounds (680kg).
Distribute the weight equally on both brackets.
Figure 21
Adding Weights
28469