YP-425, 625, 825, & 1025-A3P
Adjustments
53
2018-07-23
401-652M
25AP Series Row Unit Adjustments
Refer to Figure 45 (which depicts a row unit populated
with most optional accessories supported for use
with the YP425A3P/625A3P/825A3P/YP1025A3P Air
Planter)
From front to back, a Great Plains 25 Series Air-Pro
®
row
unit can include the following capabilities (some
optional):
1.
Lock-Up Pin Storage Hole
(Hole Standard)
2.
Down-Pressure Cam
(Standard)
Row units are mounted on parallel arms. This
parallel-action mounting allows the row-unit to move
up and down while staying horizontal. Springs add
an adjustable force, set by the cam, to the row
weight. See “
3.
Meter Pressurization Air Inlet
(Standard)
Pressure-regulated air enters the meter here and
holds seed in the disk pockets. See “
4.
Seed Delivery Hose Inlet
(Standard)
When the hopper slide gate (not shown) is open,
gravity carries the seed into the meter at the
shutter
. The hose is easily removed for inspection.
There are no adjustments.
5.
Air-Pro
®
Seed Meter
(Standard, Choice of Disks)
6.
Seed Inlet Shutter
(Standard)
This controls the level of bulk seed at the disk. There
are four operating settings, plus fully open
(clean-out) and fully closed (shut-off or storage). See
“
7.
Side Gauge Wheel Depth
(Standard)
The T-handle sets planting depth by controlling the
height of the side gauge wheels relative to the
opener discs. See “
8.
Press Wheel Force, Angle, Stagger
(Standard)
The press wheels close the furrow, gently pressing
the soil over the seed to ensure good seed to soil
contact for even emergence. See “
9.
Row Unit Lock-Up Hole
(Hole Standard)
Pins are standard on some models. With the row unit
raised above level, the lock-up pin is inserted here.
See “
10.
Row Cleaner
(Option)
Row cleaners clear trash from the row, to a depth set
by an adjustment on the arms. See “
11.
Unit-Mount Coulter
(Option)
Coulters cut remaining trash and begin opening the
seed furrow. Working depth is set by row depth and a
mounting hole selection. See “
12.
Opener Discs
(Standard)
Row-unit double disc openers create the seedbed
furrow. They have adjustments for angle and
spacing. See “
13.
Seed Tube with Sensor
(Standard)
Requires no adjustment.
14.
Scrapers
(Optional, not shown)
Inside scrapers require no adjustment. For gauge
wheel scrapers, see “
15.
Seed Firmers
(Seed Flap Standard, not shown)
An optional seed firmer (Keeton shown) minimizes
seed bounce and improves soil contact. It may also
deliver fertilizer. See “
16.
Press Wheel Type
(Choice)
A variety of single and dual press wheel assemblies
are available, some region-specific. Consult your
Great Plains dealer.
Equipment Damage Risk:
Do not back up with row units in the ground. To do so will
cause row unit plugging and may result in severe damage.
Figure 44
25AP Series Row Unit
29983
