Great Plains NTA3010 Operator Manual - Manual (Page 23)

21
Section 3 Adjustments
8/14/ NTA3010 and NTA3510 Air Drill Implement SN Z1370- 160-219M
Great Plains Mfg., Inc.
Coulter Springs
Coulter springs are preset at 10 inches, giving the coulters
an initial operating force of 400 pounds. This setting is ad-
equate for many difficult no-till conditions. For lighter no-till
conditions where rocks or other obstructions are a prob-
lem, you can lengthen the springs to protect the coulters
from impact. Refer to the chart below for spring length and
corresponding coulter down force.
NOTE: Any attempt to reset the coulter spring length
shorter than 9 3/4 inches may contribute to premature fail-
ure of parts and warranty shall be voided. If additional
force is needed, add weights to the implement.
Weights
!
WARNING!
Crushing hazard. Weights that are not properly secured or po-
sitioned could fall off the implement during folding, field oper-
ation or transport and cause severe injury or death to
bystanders. Adding weight to the wings could cause a wing to
drop suddenly during folding and severely injure or kill by-
standers. Do not add more than eight weights (four pairs) to the
implement. Use only Great Plains weights, part number 163-
233A, as additional weight on the implement. Do not add
weights to the wing sections.
Many no-till conditions will require additional weight for
sufficient coulter depth. Additional weights are available
from your Great Plains dealer. Up to eight 700-pound
weights can be evenly distributed over the center section
of the implement. Refer to the weight chart below to see
the results of adding weights.
Individual Coulters
Individual coulters that run in tire tracks can be lowered if
desired. To raise or lower individual coulters:
1. Loosen the mounting clamps and adjust the coulter to
the desired height.
2. To retighten clamps, refer to Figure 3-2. Snug the hex-
head clamp bolts (1) just until the u-bolts are tight on
each side of the spring bar.
3. Tighten nuts (2) on u-bolts.
4. Finish tightening hex-head clamp bolts.
Figure 3-2
Individual Coulter Mounting
NOTE: Ground clearance on lowered coulters will be re-
duced when the implement is in the raised position.
Press Wheel Adjustment
To change the height of the press wheel, lift and slide the
“T” handle on top of the opener arm as shown in the Figure
3-3.
•
To lower the press wheel for a more shallow seeding,
slide the handle toward the implement.
•
To raise the press wheel for deeper seeding, slide the
handle away from the implement.
Figure 3-3
Press Wheel Adjustment
Spring Length Coulter Down Force
10 1/4 in 300 lb
10 in 400 lb
9 3/4 in 525 lb
NTA3510 NTA3010
7 1/2-Inch
Rows
10-Inch
Rows
7 1/2-Inch
Rows
10-Inch
Rows
Empty Drill 18,800 lb 16,500 lb 17,650 lb 15,700 lb
Per
Coulter, No
Weights 342 lb 413 lb 368 lb 493 lb
Per
Coulter,
Eight
Weights 451 lb 563 lb 493 lb 603 lb
10300
12919