3P3025AH
Adjustments
Great Plains
| 411-332M | 2019-02-19
59
Rear Seeding Switch Adjustment, Hydraulic
Drive Row Units With Lift Assist
The seeding switch
signals the planter monitor (and
activates the hydraulic drive), when the planter is
lowered for planting.
Although factory-preset for typical planting conditions,
Great Plains recommends adjusting the seeding switch
for your exact field conditions and planting depth. Check
the seeding switch seasonally thereafter, or when
planting conditions change. Also perform this adjustment
if the seeding switch is replaced or dislodged.
The seeding switch is mounted to a mounting bracket
using a magnet
. One of the lift assist arms actuates
the toggle arm
in the seeding switch.
When adjusting or replacing the seeding switch,
make sure the cable exit
is at the bottom. If the
cable is at the top, moisture will accumulate in the
seeding switch, causing failure.
1. Lower the planter to the height at which seed
delivery is to begin.
2. Apply the tractor parking brake, stop the engine, and
take the key with you.
3. Slide the switch bracket
to move the seeding
switch
up or down. Adjust switch bracket so
switch toggle arm
just makes contact with top of
upper parallel arm
.
4. Move the switch bracket down
1
/
4
inch (6.4 mm).
1
2
3
4
5
Figure 59
Seeding Switch Mounting
68102
2
3
1
4
1
2
3
4