10hd row unit lock-up, 10hd disk blade adjustments – Great Plains 3N-4025P Operator Manual User Manual
Page 109
Great Plains Manufacturing, Inc.
Adjustments
105
2014-01-29
196-538M
10HD Row Unit Lock-Up
When seeding is shut off, individual row 10HD Series
row units can be locked up to reduce wear. The opener
shank has a hole
in the opener shank that accepts an
optional pin
to block parallel arm movement. See
page 164 for pin ordering information.
1.
Raise the drill. Although this adjustment can be
made with the drill lowered, the springs will be in
tension, and will require more effort. The extra force
may also damage tools.
2.
Set the down pressure springs to the minimum cam
setting, per the instructions on page 96.
Crushing and Sharp Object Hazard: Do not attempt to lift the
row unit by hand. The weight of the unit, plus the force of the
springs (even at minimum) is too great (plus, a free hand is
needed for pin insertion). Even with multiple people lifting,
hand-lifting is unsafe - there are numerous sharp edges, and
the row unit will snap down violently if a grip is lost.
3.
Raise the row unit high enough that the hole
for
the pin is above the lower parallel arm. This can be
done in several ways, including:
a. use a hoist at the rear of the shank
b. use a jack under the shank extension
c. place a block under the row, and lower drill
4.
Remove the pin from the storage hole
. Insert it in
the lock-up hole
. Secure it with the cotter pin
.
5.
Lower row unit until lower parallel arm rests on
lock-up pin.
6.
Repeat for all rows needing lock-up.
10HD Disk Blade Adjustments
See also “10HD Opener Maintenance” on page 152.
Opener disc angle and stagger is not adjustable, but
disc-to-disc spacing is, and may need attention as discs
experience normal wear. Spacers will need to be reset
when blades are replaced.
Refer to Figure 129
The ideal spacing causes the blades to be in contact for
about one inch. If you insert two pieces of notebook
paper between the blades, the gap between them should
be 0.5 to 1.75 in. (13 to 44 mm).
If the contact region is significantly larger or smaller (or
there is no contact at all), it needs to be adjusted by
moving one or more spacer washers. If the contact
region varies with blade rotation, one or both blades is
likely bent and in need of replacement.
Loss of Control and Sharp Object Hazards:
Do not lift a row unit by hand. The weight of the unit, plus the
spring force (even at minimum) is too great (plus, a free hand
is needed for pinning). Even with multiple people lifting,
hand-lifting is unsafe - there are numerous sharp edges, and
the row unit will snap down violently if a grip is lost.
Machine Damage Risk: Do not pin the row unit while it is in
the lowered position. If the pin is inserted below the parallel
arm, unit damage will occur when planting begins.
Figure 142: 10HD Series:
Ready for Lock-Up
27226
27227
3
6
1
4
5
2
2
3
4
2
5
1
2
6
Figure 143: 10HD Series
Checking Disk Contact
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