Great Plains 3N-4025P Operator Manual - Manual (Page 146)

142 3N-40P Table of Contents Index Great Plains Manufacturing, Inc.
196-538M Table of Contents Index 2014-01-29
Frame Alignment and Level
Adjusting Fold Cylinders
If the drill does not fold or unfold fully it may be
necessary to add or remove shims from the base of the
wing fold cylinder.
Refer to Figure 193
1.
With the drill in the folded or unfolded position make
sure drill is on level ground and all safety locks are in
place.
2. Place tractor in park, turn off ignition and remove
ignition key.
3. Remove bolts from cylinder base plate and add
or remove shims as necessary.
4. Tighten fold cylinder base bolts and activate fold
cylinders to make sure wings travel to full open and
full closed position. If not repeat above steps until full
open and full closed are achieved.
Level 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 at “Bleeding Fold Hydraulics” on
page 146, before proceeding.
Refer to Figure 194
1.
Locate the threaded eye bolt at the base end of
the wing caster wheel cylinders. The eye bolt is
locked in place by jam nuts
. 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 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.
.eps
50%
Figure 193
Fold Cylinder Shims
20339
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3
1 2
3
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328 dpi
Figure 194
Frame Level Eyebolt
20316
4
5
5
4
5