Great Plains ADI445 Operator Manual - Manual (Page 37)

35
Section 3 Adjustments
5/11/05 Model 2250 Air Drill Implement 160-192M
Great Plains Mfg., Inc.
Coulter Adjustments
If your implement is equipped with optional coulters or
coulter fertilizer attachments, the following adjustments
can be made to optimize coulter performance.
Individual Coulter Depth Adjustments
Each coulter is independently mounted in front of and be-
tween two openers. The coulters cut through residue
and/or cut grooves in the soil for fertilizer application. The
coulters are mounted on the front rank of the implement.
Therefore, the cutting depth of all the coulters on the im-
plement will change as the unit is raised and lowered, refer
to Setting Seeding Depth And Leveling Front to Rear on
page 33 for information on how to make this depth adjust-
ment. The operator will want to adjust the coulters so that
they are operating at a relative depth to the openers.
Those coulters which run directly in implement, cart, or
tractor tire tracks may need to be adjusted differently than
the rest of the coulters. Coulter depth can be adjusted in-
dependently of other coulters and openers by using the
following procedures.
!
WARNING!
Be sure cylinder lock channels are in place and wheels are
blocked to keep implement from rolling. Serious injury or death
could result from a falling or rolling implement.
Refer to Figure 3-8:
1.
Be sure the coulter assembly is supported by blocking
up the coulter.
2. Loosen the u-bolts holding the coulter clamp.
3. Slide coulter shank up or down so that the coulter is at
the desired height.
4. Support the coulter at the new height and retighten the
u-bolts holding the coulter clamp.
Tip Angle Adjustment (Spring Reset)
Figure 3-7
14539
Coulter Spring Adjustments
No spring adjustment is necessary on this unit. Initial op-
erating force to move coulter upwards is 540 pounds. This
preload has proved to be more than adequate for most till-
age conditions.
!
CAUTION!
Any attempt to make coulter force greater than factory setting,
may contribute to premature failure of parts and warranty shall
be null and void.
Fertilizer Tine Adjustments
Dry Fertilizer Tine Depth Adjustments
Refer to Figure 3-9:
When using the dry fertilizer attachment option with the
coulters, the bottom of the tine should run approximately
1” to 1 1/2” below the surface of the soil (the tine can be set
to run deeper but will cause excessive wear and will in-
crease the chance of plugging). The tine should also be
set to operate approximately 1” behind the coulter blade in
a vertical or slightly back swept position. The main objec-
tive is to position the tine and fertilizer outlet in the void cre-
ated as the coulter cuts through the soil. This will allow the
nozzle to direct the fertilizer to the bottom of the trench be-
fore the soil can fill back in. Set the fertilizer tine according
to the following procedures.
!
WARNING!
Be sure cylinder lock channels are in place and wheels are
blocked to keep implement from rolling. Serious injury or death
could result from a falling or rolling implement.
Coulter Adjustments
Figure 3-8
15273
NOTE: Many times the coulter depth will be adjusted
relative to the opener tip. The implement should be
parked on a clean, level area (preferably concrete)
when coulters are adjusted relative to the openers.