Great Plains 2510HDF Operator Manual - Manual (Page 49)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 45
2013-11-11 Table of Contents Index 288-340M
Row Unit Shut-Off
To shut off seed flow to individual rows, such as to
operate with half row spacing, there are three steps
involved:
Refer to Figure 39
1.
Block the seed flow to the row with an optional seed
tube plug. See page 62 for ordering.
2. Re-calculate the drill’s swath, and check for any
changes needed to:
marker extension (see page 21) and
calibration (revolutions per acre, see page 31)).
Refer to Figure 40
3.
Reduce needless wear on the unused rows by
locking them up.
Note: When not locked-up, store the pins in the top hole
of the mount.
Row Unit Lock-Up
When seeding is blocked, 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 64 for pin ordering information.
1. Raise the drill. Although this adjustment can be
made with the drill lowered, the springs will be in ten-
sion, 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 43.
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 vio-
lently 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.
Figure 39
Block Seed Tubes
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Pinch/Crush Hazard and Machine Damage Risk:Raising a
row unit on a block by lowering the drill is risky. Full lowering
can easily damage components, and hydraulic failure is a
safety hazard.
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 40
10HD Ready for Lock-Up
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