Great Plains 3N-4025P Operator Manual - Manual (Page 147)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 143
2014-01-29 Table of Contents Index 196-538M
Level Frame Front to Rear
Level the drill front-to-rear with eye bolts located on the
rear axle only.
6. Repeat the steps “Level Frame Side to Side” on
page 142 using only the rear cylinders, until the drill
is level front-to-rear when drilling in actual seeding
conditions.
Note: When drill is level, opener bodies are at level or
slightly higher at rear.
Note: Drill must be level front to rear in actual planting
use or row plugging will occur. Adjusting 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 wheel depth is set too
low.
7. Have an assistant check front to rear level while
planting by observing the drill from a safe distance.
Drill should run with box and frame level or slightly
lower in the front.
Box Alignment
To check and adjust box alignment:
1. Unfold drill (“Unfolding the Drill” on page 28) and
place a block ahead of each wing caster wheel. Pull
drill forward against blocks to rock frames back. Pull
forward until stop bolts are firmly against tool bars.
Refer to Figure 196
2.
Check for proper alignment by running a string line
across back of drill toward outer ends of wings. For
proper alignment, outside ends of boxes
(dimension
) should be 0 to
1 ⁄
4
inches (0 to 6 mm)
ahead of inside ends (dimension ).
Refer to Figure 195
.eps
100%i
Figure 195
Stop Bolt
20317
1
Figure 196
Box Alignment (wing angles exaggerated for clarity)
20326
1
A A
B B
1
A
B