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Great Plains
| 166-207M | 02/26/2019
80
NTA907HD and NTA3007HD
Adjustments
19. Refer to the seed rate chart for Seed Rate gearbox
setting values for the new chart rate.
20. Adjust the control arm to the Gearbox Setting closest
to the
NewChart
rate.
21. Run the calibration again, starting at step 9, using
the new Variable Rate Gearbox scale setting.
This validates the gearbox adjustment, and
establishes a new, more precise Calibration
Constant.
22. With the present meter satisfactorily calibrated, re-
mount the final drive gear removed from the other
hopper.
23. Repeat the calibration procedure for the other
hopper, starting at step 1.
24. Remove and store the calibration crank.
Contact Drive Adjustment
Refer to Figure 84 and Figure 85
There are two contract drive tension springs
on each
side of the drill; four total. If there seems to be:
•
insufficient traction between the contact drive tires
and the main transport tires
;
•
excess spring force at contact tires, or
•
or a contact drive shaft
is below the minimum
clearance when raised in the frame slots
,
then follow these steps:
1.
Check tire size and inflation (page 144).
Use tire sizes specified by Great Plains, at
recommended pressures. The remaining steps of
this section cannot be used to compensate for
incorrect sizes and/or inflation.
49.2
31
77260
158.5
177.6
58
52.7
32
77341
163.7
183.5
59
56.3
33
77413
169.0
189.4
60
60.0
34
77479
174.3
195.4
61
63.7
35
77538
179.6
201.3
62
67 6
36
77591
185 0
207 4
63
Example:
NewChart rate to use:
183.5
New Gearbox Setting:
59
The rate of the arm adjusting crank is more than one
scale degree per turn, and the crank can only be
pinned at quarter turns. Pin it when the indicator is
closest to the desired setting.
Figure 84
Contact Drive Springs
29591
2
7
3
6
1
Содержание NTA3007HD
Страница 2: ...Great Plains 166 207M 02 26 2019 Table of Contents Index ii 166 207M Table of Contents Index ...
Страница 4: ...2SF24 and 2SF30 ...
Страница 177: ...Table of Contents Index Table of Contents Index ...
Страница 178: ...Great Plains Mfg 1525 E North St P O Box 5060 Salina KS 67402 Table of Contents Index ...