Great Plains 3S-5000HDF Material Rate - Manual (Page 18)

16 00/00HD Min-Till Folding Drill Table of Contents Main Box Rates Great Plains Manufacturing, Inc.
195-325B Table of Contents Main Box Rates 2012-06-04
Setting Fertilizer Final Drive
Refer to the Fertilizer Rate Chart on page 19 to find the
correct Final Drive sprocket sizes for your drill’s row
spacing and target (or adjusted) application rate.
Refer to Figure 8
To change the Final Drive setting:
1. Loosen idlers and slide idler sprockets out of
engagement with chain.
2. Remove lynch pins from both sprocket shafts, and
remove sprockets.
3. Place correct Driver and Driven sprockets on their
respective shafts.
4. Store sprockets not used on ends of shafts. Re-
install pins.
5. Reinstall chain and engage idlers, allowing
1 ⁄
4
inch
(6.4 mm) slack in the top chain span.
6. If this is the final setting, after calibration, repeat
step 1 through step 4 for the other drill sections.
Fertilizer Rate Calibration
Differences will exist between the tested fertilizer and
field conditions used to generate the Rate Chart, and
your fertilizer and conditions. To accurately achieve your
target application, Great Plains recommends calibrating.
Perform the calibration with the drill raised for transport,
but with the opener frames lowered (if the openers are
raised, the clutches will disengage). Leave the tractor
hitched for movement control. Block the tires not being
used in the calibration.
If you have previously calibrated your acremeter (see
Operator’s manual), you can use it to tally acres.
1. Jack up the left drive gauge wheel assembly until the
left section is roughly level. Use blocks to ensure that
the section cannot fall if the jack relaxes, tips over or
fails.
2. Rotate the gauge wheels and check that the drives
and seed cups are engaged, working properly and
free from foreign material. If not already done, set
the Range and Final Drive for the left section. If seed
is loaded, remove a seed drive chain or set the Seed
Rate Handle to 0 (unless you are simultaneously
calibrating seed and fertilizer rates).
3. Note the reading on the acremeter, unless you do
not plan to rely on it for the calibration.
4. Check that your gauge-wheel tires are of factory-
specified size and properly inflated. See the “Tire
Inflation Chart” in the Operator manual.
Figure 8
Fertilizer Final Drive
16378
1
2
2
DRIVER
DRIVEN
1
2
Crushing Hazard:
Always have transport locks in place and frame sufficiently
blocked up when working on the drill. You may be severely
injured or killed by being crushed from a falling implement or
openers.
For example:
you desire to apply 65 lb/cu-ft material at a rate of:
78 pounds per acre
on a 7.5 inch row spacing drill with a row count of:
63
Per the table, the drive system setup is:
Low Range
21T Driver
16T Driven