Leveling drill – Great Plains 2SF30 Operator Manual User Manual
Page 24
20
2SF24/30
Great Plains Manufacturing, Inc.
155-015M-A
2014-01-09
Leveling Drill
This section describes procedures for leveling the drill on
its initial setup. This should be a one-time adjustment
and will not be needed during day-to-day operation.
If while using the drill, it appears to be lifting or planting
unevenly, check the following before re-leveling the drill.
• First, make sure the tongue is running level to the
ground while running in the field. Be sure to check this
if the drill has been switched to a different tractor.
• Second, check the lift cylinders. Be sure they are
properly bled, are operating correctly, and do not have
internal oil leaks before using this section to re-level
the drill.
The opener spring rods located along the back of the drill
boxes are indicators of the level of the drill because they
show the amount of down-pressure exerted on the disk
openers and press wheels. A level drill will have equal
opener down-pressure from end to end.
Check the spring rod cross bolts at the top of the spring
rods to see that they are all extended about 2 inches
above their spring rod castings. This is a general
dimension and may vary with the spring down-pressure
you require for different soil conditions and planting
depths, see “Planting Depth Adjustments” on page 33.
If you require more downward float of your openers you
may want to increase this dimension. Keep in mind when
this dimension is increased your upward motion is
decreased, limiting the vertical travel of the openers for
running over rocks and other foreign objects.
Opener Damage Hazard:
If your openers’ vertical travel is decreased, considerable
damage will occur to your openers.
If all the spring rods along the drill extend the same
distance above their castings, the drill is level and you
should tighten down the threaded studs as described in
“Transport Wheel Adjustments for Leveling Drill” on
page 21. If the spring-rod extensions vary in length, the
drill can be leveled with transport wheel and gauge
wheel adjustments. These are described on page 21.
To summarize: After leveling your drill, it should have the
same dimension from the ground to the box frame at
both ends of each box. These adjustments may have to
be fine tuned after observing the drill in the field in actual
planting conditions.
Figure 9
Opener Spring Rods
10548
2 in.
5.08 cm