GREAT PLAINS 3N-3010, Руководство оператора, Страница: 28 / 118

24Great Plains | | 4/22/19 Table of Contents Index Great Plains | 24
196-366m Table of Contents Index Preparation and Setup
Leveling Frame Side-to-Side
All frame sections must be level to maintain even
seeding depth. Before using the drill in the field, follow
these steps to make sure the drill is level side-to-side.
Periodic frame-leveling adjustments should not be
necessary, but if you are having problems with uneven
depth, check drill levelness and follow these procedures.
Complete the steps under “Bleeding Fold Hydraulics,”
page xxii, before proceeding.
Refer to Figure 3
1. Locate the threaded eye bolt at the base end of the
gauge-wheel cylinders. The eye bolt is locked in
place by a jam nut. Observe the amount of thread
exposed above the upper nut and below the lower
nut. If the exposed threads are roughly equal, no
initial adjustment is needed. Go to step 3.
2. If the exposed threads above and below the nuts are
not equal, loosen and adjust the jam nuts until the
amount of exposed thread is about the same above
and below. Repeat for other end of drill.
3. Move the drill to a level area. With the drill unfolded,
raise the drill to its highest position with the lift
cylinders. With the tractor idling, rephase the
cylinders by holding the hydraulic lever on for an
additional 30 seconds. Immediately lower the boxes
until the coulters and openers are just ready to touch
the ground.
4. Move the gauge-wheel eye bolts until the openers on
the outside end of the drill are the same height as the
center openers.

NOTE: Eye-bolt adjustments are easier if the drill is
first lowered to the ground to remove some of the
force on the cylinders.
5. Repeat the steps above until the drill is level end-to-
end when drilling in actual seeding conditions.
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19119
Figure 3
Frame Leveling