Great Plains 3PYPA Operator Manual - Manual (Page 82)

78 3PYPA Table of Contents Index Great Plains Manufacturing, Inc.
401-647M Table of Contents Index 03/20/2012
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 76).
Refer to Figure 103 (depicting an empty meter)
4.
Inspect meter (see page 104 for details).
5. Make sure clamp is aligned with seat .
Refer to Figure 104
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 condition
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, and may be combined with “FILL DISK”. An
alternate method, which avoids running the tractor, mon-
itor and fan, is to rotate the section’s meter drive shaft,
top forward, with a
7 ⁄
8
in 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 Mate-
rial, seed disk Cell Count, and target population.
10. Re-install rain cover (page 76).
Null4:
Figure 103
Disk Removed From Meter
29608
2
1
1 2
Null4:
Figure 104
Disk on Clamp and Seat
29611
3
1
4
1
3
Null4:
Figure 105
Disk Clamped
29614
4