Great Plains 3N-4020 Operator Manual - Manual (Page 81)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 77
2013-10-29 Table of Contents Index 196-359M
10HD Coulter Row Alignment
Refer to Figure 114
For both frame- and unit-mounted coulters, the ideal
alignment is for the blade to prepare a furrow directly
ahead of the opener discs.
As a check on coarse alignment, sight along the coulter
blade centerline
, the gap between the opener blades
, and the centerline between the press wheels . If
they are clearly out of alignment, either the coulter or the
press wheels (or both) may be in need of adjustment.
The exacting test of correct alignment is field results.
Operate the drill on some test ground (no seed required),
and verify that the opener blades are in the groove
opened by the coulter.
Refer to Figure 115
To adjust unit-mounted coulter alignment, loosen the four
bolts
that attach its bracket to the row unit. The holes
on the row unit are slotted, side-to-side, and allow the
coulter bracket sideways and rotational adjustment.
Keep the coulter blade vertical while adjusting.
If the blade cannot be brought into alignment, check that
the blade spindle itself is using the same hole location on
each side of the bracket.
Figure 114: 10HD Series:
10HD Series Coulter Alignment
26125
1
2
3
1
2 3
Figure 115: 10HD Series:
10HD Series Coulter Mount
26126
4 4