Great Plains 2N-3010 Operator Manual - Manual (Page 19)

2013-05-23 Table of Contents Index 133-029M
Great Plains Manufacturing, Inc. Table of Contents Index 15
Adjustments
Seeding Adjustments
Refer to Figure 5
1. Lower the drill hydraulically in order to activate the
clutch.
2. Raise the drive wheel off the ground with a jack.
3. Rotate each end wheel to see that feed cups and
drive are working properly, are not binding and are
free from foreign matter.
The large differences in seed size and treatment can
cause a wide variation in actual seeding rates. The seed
rate charts on the following pages are based on average
size seed. This may differ from the seed you are using.
Use the seed rate charts as a guide.
Read the feed cup adjustment indicator number for the
desired feeding rate (and row spacing) from the following
seed rate charts. Complete the following procedure to
calibrate the drill for your specific seed.
4. Move the feed cup adjustment lever to the indicator
number obtained from the chart.
5. Place several pounds of seed over three of the
feeder cups at the outboard end of the small seeds
box.
6. Pull the seed tubes off of these three disk openers.
7. Place a container under the three seed tubes to
gather the seed as it is metered.
8. Rotate the drive gauge wheel until one acre has
been tallied on the acremeter. This will be
approximately
181 rotations for 30 foot drill and
225 rotations for 24 foot drill.
Be sure to check the three feeder cups to make sure
each cup has plenty of seed coming into it.
9. Weigh the seed which has been metered. Divide by
three. This will give you the ounces/pounds metered
by each feeder cup. Multiply by the number of
openers on your drill to arrive at the total
pounds-per-acre your drill would meter at that
setting. If this figure is different than desired, reset
your feed cup adjustment lever accordingly.
10. Repeat procedures step 4 through step 9 on each
drill box.
You may want to repeat the calibration procedure if the
results of your calibration vary greatly from the
suggested setting contained in this manual.
There are many factors which will affect seeding rates:
seed treatment, weight of seed, size of seed, surface
condition of seed, tire configuration, pressure and
slippage. Minor adjustments will probably be needed to
compensate for these factors.
The seeding rates in the seed charts are based on drills
having 11L x 15 rib implement end wheel tires.
Tire size and field conditions will also affect seeding rates. Be
certain that your drill rib tires are 11L x 15 and that they have
the proper inflation. When drilling, check the amount of seed
you are using by noting acres drilled, amount of seed added to
drill, and level of seed in drill box. If you suspect that you are
drilling more or less than desired, and you have accurately
calibrated the drill to your seed, you may need to adjust the
seeding rate slightly to compensate for your field conditions.