Great Plains NTA 2000 Assembly Instructions - Manual (Page 3)

3 8/4/2005 NTA 2000 148-612M
Great Plains Mfg., Inc.
Assembly
19887
Harrow Adjustments
For Harrow package 148-611A
Refer to Figure 2
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 3
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 transmission is in the
park position. Make sure the drill is on level ground and the coulter
and opener wing frames are in their unfolded position. For proper
hitching and unfolding instructions refer to the operators manual for
this drill.
Refer to Figure 4
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 contact the lights.
1. 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.
2. 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).
3. 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.
4. 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.
5. Make sure both chains are adjusted to the same
length so the section raises and lowers evenly.
6. Reinstall bolts and tighten nuts.
Figure 2
Frame Adjustment
Figure 3
Tine Adjustment
Figure 4
Chain Adjustment
19886
19913