Great Plains YP4425A Operator Manual - Manual (Page 81)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 77
2012-02-23 Table of Contents Index 401-805M
Air-Pro
®
Meter Disc Installation
1. Cross-check Seed Rate Chart data against part
number/description molded into discs to be used.
Population Risk:
Use the same disc in all active rows.
2. Inspect discs to be installed. Do not install damaged
or excessively worn discs. Either can cause irregular
seeding. Chips and cracks accelerate brush wear.
3. Remove meter rain cover (page 75).
Refer to Figure 97 (depicting an empty meter)
4.
Inspect meter (see page 97 for details).
5. Make sure clamp is aligned with seat .
Refer to Figure 98
6.
With the seed pocket side facing the meter housing,
place the new seed disc on the disc seat.
7. Rotate disc clamp clockwise 45 ° to clamp disc.
Clamp seats into detents in disc hub.
Note: On a new meter, or with new brushes installed,
force the disc into the brushes to allow the disc
clamp to rotate. This condition eases as the brush
fibers are trained during initial rotations.
Note: With slightly used brushes, when a disc is first
clamped, it is normal for the disc hub to be flat with
the face of the disc seat only on the inlet (rear) side.
The disc fully seats as it first turns. This condition
eases as the brush fibers receive further use.
Brush Mis-Seating Risk:
Rotate discs forward shortly after disc installation. If planting
is not anticipated within an hour or two of disc installation,
rotate the drive system a few turns to ensure that meter brushes
lean in the correct direction. Correct lean improves meter
performance and reduces air consumption. This step is
particularly important for new brushes.
Brush seating may be accomplished with or without seed
present, and may be combined with “FILL DISK”. An
alternate method, which avoids running the tractor,
monitor and fan, is to rotate the section’s meter drive
shaft, top forward, with a
7 ⁄
8
inch (23 mm) open-end
wrench.
8. Reset seed inlet shutter to setting recommended
by Seed Rate Chart, or to your own developed value.
9. On the seed monitor console, select the new
Material, seed disc Cell Count, and target
population.
10. Re-install rain cover (page 75).
Figure 97
Disc Removed From Meter
29608
2
1
1 2
Figure 98
Disc on Clamp and Seat
29611
3
1
4
1
3
Figure 99
Disc Clamped
29614
4