Leveling drill, Side-to-side level – Great Plains 3N4010HDA Operator Manual User Manual
Page 60
56
3N-4010HDA
Great Plains Manufacturing, Inc.
196-444M
2013-09-24
Leveling Drill
Make sure hydraulic system is fully charged, bled and
re-phased before making any other adjustments to level.
Side-to-Side Level
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.
Also check that any frame-mounted coulters, and all row
units, are set to matching depth and down-force
a
(other
than in tracks).
Periodic frame-leveling adjustments should not be
necessary, but if you are having problems with uneven
depth, check drill levelness and follow these procedures.
1.
Complete “Bleeding Hydraulics” on page 54,
before proceeding.
Refer to Figure 54
Adjustment Starting Point:
2.
Locate the threaded eyebolts
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
adjustment nut
. If the exposed threads are roughly
equal, no initial adjustment is needed. Go to step 4.
3.
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.
Adjustment Procedure:
4.
Move the drill to a level area. With the drill unfolded,
raise the drill to its highest position with the lift cylin-
ders. With the tractor idling, rephase the cylinders by
holding the hydraulic lever on for an additional 30
seconds. Immediately lower the sections until the
coulters and openers are just ready to touch the
ground.
5.
Move the gauge-wheel eyebolt adjustment nuts
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.
6.
Repeat the steps above until the drill is level
end-to-end when drilling in actual seeding condi-
tions.
a. If row unit settings are not equal, they can cause section heights to be dissimilar. Balance rows before adjust frame level.
Figure 54
Gauge Wheel Eyebolt
20316
1
2
3
1
2
3
3