Great Plains 2525A Operator Manual - Manual (Page 52)

48 2025A/2525A Table of Contents Index Great Plains Manufacturing, Inc.
118-999M Table of Contents Index 2013-06-04
Air-Pro
®
Meter Disk Installation
1. Cross-check Seed Rate Chart data against part
number/description molded into disks to be used.
Population Risk:
Use the same disk in all active rows.
2. Inspect disks to be installed. Do not install damaged
or excessively worn disks. Either can cause irregular
seeding. Chips and cracks accelerate brush wear.
3. Remove meter rain cover (page 46).
Refer to Figure 48 (depicting an empty meter)
4. Inspect meter (see page 68 for details).
5. Make sure clamp is aligned with seat .
Refer to Figure 49
6. With the seed pocket side facing the meter housing,
place the new seed disk on the disk seat.
7. Rotate disk clamp clockwise 45deg to clamp disk.
Clamp seats into detents in disk hub.
Note: On a new meter, or with new brushes installed,
force the disk into the brushes to allow the disk
clamp to rotate. This condition eases as the brush
fibers are trained during initial rotations.
Note: With slightly used brushes, when a disk is first
clamped, it is normal for the disk hub to be flat with
the face of the disk seat only on the inlet (rear)
side. The disk fully seats as it first turns. This con-
dition eases as the brush fibers receive further
use.
Brush Mis-Seating Risk:
Rotate disks forward shortly after disk installation. If planting
is not anticipated within an hour or two of disk 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. Rotate the section’s gauge wheel (top forward),
or rotate the section’s meter drive shaft, top forward, with
a <numerator>7
⁄
<denominator>8in open-end wrench.
8. Reset seed inlet shutter to setting recommended
by Seed Rate Chart, or to your own developed value.
9. Re-install rain cover (page 46).
Figure 48
Disk Removed From Meter
29608
2
1
1 2
Figure 49
Disk on Clamp and Seat
29611
3
1
4
1
3
Figure 50
Disk Clamped
29614
4