Great Plains YP3025 Operator Manual - Manual (Page 74)

70 YP3010HDP/3020P/3025 Table of Contents Index Great Plains Manufacturing, Inc.
401-703M Table of Contents Index 2013-09-09
To adjust coulter depth:
1. Determine the present opener and coulter depths.
2. Note which bracket hole the coulter is presently
using.
3. Determine which new hole will position the coulter
closer to the
1 ⁄
4
in-above depth. See table at right.
4. Remove the
5 ⁄
8
-11 x 4in bolt, lock washer and
nut ( in Figure 84).
5. Move the blade to the new position. Insert the bolt,
and tighten on the lock washer and nut.
If a worn coulter cannot be adjusted to satisfactory oper-
ating depth, replace the coulter blade.
Coulter Row Alignment
Refer to Figure 86
For 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 planter on some test ground (no seed
required), and verify that the opener blades are in the
groove opened by the coulter.
Adjust UMC Alignment
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.
Row-Unit Opener Disk Adjustments
Note: Applies to all Series openers.
Figure 85
Coulter Blade Mounting Holes
29125
Hole
No.
Depth of (new) coulter blade relative
to (new) opener blades
1in (25mm) above
5 ⁄
8
in (16mm) above
1 ⁄
4
in (6mm) above
0 (factory standard hole)
3 ⁄
8
in (10mm) below
3 ⁄
4
in (19mm) below
2
3
5
1
4
6
1
2
5
4
3
6
7
1
2
3
Figure 86
10HD Unit-Mount Coulter
29219
4
1
2
3
4