Great Plains NTA2000D Operator Manual - Manual (Page 34)

32 NTA 2000D 148-632M 9/13/2006
Great Plains Mfg., Inc.
Harrow Adjustments
Refer to Figure 36
The illustration shows a successful harrow position for no-
till conditions. Because of different soil moisture, trash lev-
els and trash types, you may need to reposition the tube
frame or tines. Initially position the frame and tines as
shown, then readjust as necessary.
1. To adjust the frames, loosen the hex nuts (1) on the
U-bolts and rotate the frame tube (2) as necessary.
Tighten nuts.
Refer to Figure 37
2. To adjust the tines, loosen the 1/2” hex nuts (3) on the
1/2” U-bolts that attach the tine tubes to the harrow
frames.
3. Rotate tine tubes (4) so the tines are against the stop
bushings and are angled back as necessary. Re-
tighten hex nuts on U-bolts.
!
CAUTION!
Before working around the drill make sure it is properly hitched
to the tractor and that the tractor is turned off and the transmis-
sion is in the park position. Make sure the drill is on level
ground and the coulter and opener wing frames are in their un-
folded position. For proper hitching and unfolding instructions
refer to the operators manual for this drill.
Refer to Figure 38
Note: The light bar brackets on the drill must be adjusted
so the lights are just behind the wing opener press
wheels and just ahead of the wing harrow when the drill
is folded. Use extreme caution when folding the drill for
the first time after the harrows are installed. Slide the light
bar brackets forward or backward as necessary so the
wing opener press wheels and wing harrows do not con-
tact the lights.
4. To adjust the transport height of the center harrow
section, raise the drill and install the transport lock
channels on the transport cylinders and the tongue
cylinder.
5. Remove the 7/16” lock nuts (1) and 7/16” x 2 3/4” bolts
(2) from the center pull arms and the chain links on
chain (3).
6. The center section must rest low enough in the trans-
port position to allow the wing sections to fold over the
top of the center section without contacting it. This po-
sition is slightly lower than the maximum down posi-
tion of the wing sections.
7. Select a chain link to adjust the transport height of the
center section. Carefully fold the drill to make sure the
wing harrow sections do not contact the center sec-
tion. Make adjustments as necessary to get the max-
imum center section transport height without wing
section contact.
8. Make sure both chains are adjusted to the same
length so the section raises and lowers evenly.
19886
Figure 36
Frame Adjustment
Figure 37
Tine Adjustment
Figure 38
Chain Adjustment
19887
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