Great Plains 606NT Material Rate - Manual (Page 20)

18 3P605NT, 3P606NT, 605NT & 606NT Table of Contents Main Box Rates Great Plains Manufacturing, Inc.
151-122B Table of Contents Main Box Rates 2011-10-21
4. Remove the calibration crank from its storage stob.
Store the retaining pin on the stob.
Refer to Figure 10 or Figure 11
5.
Place the hex socket of the crank on the left end of
the main jackshaft.
Note: On the 605NT or 606NT you can also rotate the
gearbox input jackshaft by means of a wrench or
socket. You may need to remove the acremeter.
Use same number of rotations when turning the
gauge wheel jackshaft, gearbox input jackshaft or
tire.
Note: On the 3P605NT or 3P606NT you can also rotate
the gearbox drive shaft with wrench or socket.
6. Pull the small seed hoses off the top of three opener
seed tubes, at the top of the openers. Place the
hoses into each sample container.
7. If not already done, set the Small Seeds Rate
Handle.
8. Load seed above the rows to be sampled. Load well
more than the expected sample size.
9. Rotate the crank several turns to ensure that the
drives and seed cups are engaged, working properly,
free from foreign material, and that seed is flowing
steadily from the meters. Stop.
10. Note the current reading of the acremeter, unless
removed or you do not plan to rely on it for the
calibration.
11. Empty the sample containers back into the seed box,
and place them back under the three hoses to gather
metered seed.
Figure 10
3P606NT Calibration Crank
32793
Figure 11
606NT Calibration Crank
23389
Example: on the 3P606NT 9-row (7.5 in.) drill, planting
alfalfa at 12 pounds/ac has an initial small seeds rate
handle setting of:
60