Great Plains 3N-4025P Operator Manual - Manual (Page 111)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 107
2014-01-29 Table of Contents Index 196-538M
10HD Seed-Lok
®
™ Lock-Up
Optional Seed-Lok
®
firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and
do not require adjusting. In some wet and sticky
conditions the wheels may accumulate soil. To avoid
problems associated with this, you can lock-up the
firmers.
Refer to Figure 132 (which depicts a row unit with the opener
blades removed for clarity)
To lock up Seed-Lock wheels:
1. Pull firming-wheel arm up as high as possible.
2. Flip the lock tip to hold the arm up.
10HD Press Wheel Adjustments
Opener Depth (Press Wheel Height)
Seeding depth on 3N-4010HDP is set by frame-mounted
coulter depth (if installed) and row unit depth. Set frame
height (page 75) before making row unit depth
adjustments.
10HD Series press wheel height is a stop adjustment
and not a spring adjustment. It establishes a fixed
relationship between opener depth and the closed-furrow
surface at the press wheel
Refer to Figure 133
Set opener seeding depth by adjusting press-wheel
height
. To adjust, first raise openers slightly, then lift
and slide T handles on top of openers. Initially adjust
all press wheels to the same height. Individual rows
running in tire tracks may need to be set deeper
a
.
• For more shallow seeding, slide T handles forward
toward drill.
• For deeper seeding, slide T handles backward
away from drill.
If press wheels are lifting off ground, check front-to-back
level, and increase row unit spring down force.
If press wheels are digging into ground, reduce spring
down force at the row units.
Figure 146: 10HD Series
Seed-Lok
®
Lock-Up
27072
2
1
2
2
a. If frame-mounted coulters are installed, adjust them for tire tracks before adjust T-handles. The coulter depth adjustment may be all
that’s required to compensate for tracks.
Figure 147: 10HD Series
Initial Opener Depth
27124
1
2
F
B