Great Plains 3N4010HDA Operator Manual - Manual (Page 61)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 57
2013-09-24 Table of Contents Index 196-444M
Front-to-Back Level
Level the drill front-to-rear using only the eyebolts
located on the rear axle. Adjust only until level
front-to-rear when drilling in actual seeding conditions.
Note: Drill must be level front to rear in actual planting use
or row plugging will occur. Adjusting gauge wheel
depth stop too low or excess opener spring force
can cause the front of drill to roll forward when
planting. Conventional till ground can also cause
drill to run low in the front if gauge wheel depth is
set too low.
Refer to Figure 55
1.
In representative field conditions, lower the drill and
pull forward to place openers in ground. If openers
a
are operating at desired depth, and row units are
parallel to the ground, check frame level
front-to-back.
Note: When drill is level, opener bodies will be level or
slightly higher at rear.
Adjustment Starting Point:
2. Locate the threaded eyebolts at the base end of
the rear axle 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 for both eyebolts.
Adjustment Procedure:
4. Lower the drill into actual seeding conditions.
5. Have an assistant check front to rear level while
planting by observing the drill from a safe distance.
Drill should run with frame level or slightly lower in
the front. Adjust eyebolts as needed.
a. If openers are not level, or at correct depth, adjust depth and down-force settings before adjusting frame level.
Figure 55
Rear Lift Eyebolt
20316
4 5
6
4
5
6