Great Plains 2SF30 Operator Manual - Manual (Page 25)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 21
2014-01-09 Table of Contents Index 155-015M-A
Transport Wheel Adjustments for Leveling Drill
Refer to Figure 10
When leveling your drill, opener spring rods near the
center of the drill that extend higher above their spring
rod castings than desired can be adjusted by raising the
transport frame. This is done by raising the drill with the
hydraulic lift cylinders.
Spring rods near the center that do not extend high
enough are adjusted by lowering the transport frame by
retracting the cylinders. Once the spring rods are at the
desired setting, screw the threaded studs on top of the
vertical tubes (page 22 Figure 13) down as far as
possible and secure them with the jam nuts. This
adjustment will stop the lift cylinder travel at the same
point each time the boxes are lowered for drilling and
assures accurate seed depth control.
Note: If it is noticed that one drill box spring rod
extension is different from the other drill box at the
center of your drill, this is a sign that your lift
hydraulic master and slave cylinders are out of
sequence with one another.
In order to get them back in sequence, simply
raise your drill all the way up and hold your tractor
hydraulic control valve lever on for a few seconds.
Lower your drill and both cylinders will be in
sequence with one another and the two drill boxes
should be at the same level again.
Gauge Wheel Adjustments for Leveling Drill
Refer to Figure 10 and Figure 11
The openers near the outside of the drill are adjusted by
raising or lowering the gauge wheels.
Raise the drill out of the ground and loosen the jam nut
located near the bottom clevis of the gauge wheel
turnbuckle. This turnbuckle is threaded to allow easy
gauge wheel adjustment. By lengthening the turnbuckle
the gauge wheel is lowered, causing less spring rod
extension through the spring rod casting. By shortening
the turnbuckle the gauge wheel is raised, causing less
spring rod to protrude through the spring rod casting.
After adjusting, be sure the turnbuckle on both gauge
wheel arms have the same pin center dimension.
Shortening the gauge wheel turnbuckle will level the
ends of the drill with the center.
Figure 10
Wing Fold Hydraulics
11504
Figure 11
Gauge Wheel Turnbuckle
10546