Great Plains 2N-3020 Operator Manual - Manual (Page 16)

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Section 1 Drill Preparation and Setup
2N-2420 and 2N-3020 Two-Section Folding No-Till Drill 196-164M-A 2/28/08
Great Plains Mfg., Inc.
Aligning Boxes
For proper alignment, the outside ends of the drill boxes
must be 1 to 1 1/2 inches ahead of the inside ends. Follow
these steps to check box alignment and adjust as
necessary.
1. With the drill unfolded and lowered, pull forward a few
feet with the openers in the ground.
2. Extend a string line to the outer ends of the wing boxes
as shown in Figure 1-4. Measure from the string line to
each box as shown. For each box, measurement A
should be 1 to 1 1/2 inches greater than measurement
B.
3. If adjustment is needed, write down how many inches
the box should be moved to be within the 1 to 1 1/2-
inch tolerance mentioned above. Also note the direc-
tion you need to move the outside end of the box–for-
ward or back.
String Line
16306
Measurement A Measurement A
Measurement B Measurement B
Figure 1-4
Box Alignment Measurements
Figure 1-5
Box Alignment Adjustment
12778
4. Make adjustments at the box end of each pull cable as
shown in Figure 1-5. Loosen the jam nut on the adjust-
ment trunnion screw. Turn the screw in or out to move
the box end forward or backward as required. Retight-
en the jam nut.
5. Pull ahead slightly and check the box alignment. Re-
adjust the pull cables if necessary.