Great Plains 1625AHL Operator Manual - Manual (Page 89)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 85
2014-04-21 Table of Contents Index 411-020M
Seed Firmer Adjustments
30 Series row units accept one of two optional firmers.
Keeton
®
Seed Firmer Adjustment
The optional Keeton
®
Seed Firmer is an engineered
polymer shape that slides down the seed trench. It traps
seeds as they exit the seed tube and firms them into the
bottom of the furrow.
Refer to Figure 90
The Firmer is provided with preset tension,
recommended for the first year. The tension screw
can
be tightened in subsequent years according to your
needs. Firmers should provide just enough tension to
push seeds to the bottom of the trench.
Measure the distance from the ground to the head of the
tension screw. This distance should be 10.2 to 11.4cm
(4 to 4
1 ⁄
2
inches). If not, loosen the bolts in the mounting
bracket and select different holes until the proper
measurement is attained.
Seed-Lok
®
Seed Firmer Lock-Up
Optional Seed-Lok
®
firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and
require no adjustment. In some wet and sticky conditions
the wheels may accumulate soil. To avoid problems
associated with this, you can lock-up the firmers.
Refer to Figure 91 (which depicts a similar 25AP row unit
with discs, side depth wheels/arms and press wheels removed
for illustrative purposes - lock/unlock requires no removal)
To lock up Seed-Lok
®
wheels:
1. Raise planter. Insert lift assist cylinder locks.
2. Lift Seed-Lok
®
lock-up handle until lever stop is
free to rotate.
3. Rotate lever stop to side/idle position . Release
lock-up handle .
4. Push up on Seed-Lok
®
wheel until wheel arm
latches up .
To release a locked-up Seed-Lok
®
:
1. Insert a
1 ⁄
4
in tool drive tip in the tool hole of the
handle . Alternatively, lift up on the wheel .
2. Rotate the handle clockwise (handle arm up) until
the Seed-Lok
®
wheel releases at the latch point
and falls free.
3. While holding the handle up, rotate the raised portion
of the lever stop
under both sides of the handle
at the arm end. Remove the tool.
1
Figure 90
Keeton
®
Seed Firmer
20327
Sharp Objects Hazard:
Row unit disc blades may be sharp. Use caution when making
adjustments. To adjust the Keeton
®
Firmer, lower the planter
until the discs of the row units are resting on the ground.
1
Note: Engage the lever stop under the handle when
Seed-Lok
®
is in use. If left disengaged , a furrow
obstruction could cause unintended lock-up.
Figure 91
Seed-Lok
®
Lock-Up
31543
2
3
1
4
2
3
5
6
1 2
3
1
4
5
6
1 4
5
2 2