Great Plains AS20 Operator Manual - Manual (Page 25)

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23 4/14/05 Great Plains Mfg., Inc.
Section 4 Hitch, Drill, & Planter Adjustments For No-Till Planting Conditions
AS15 and AS20 Planting System 148-153M
Other tilled paths and banding distances can be
achieved by moving the coulters horizontally, but the op-
erator must keep in mind that these coulters will need to
be moved back if used with a drill. Never move coulters
horizontally without first marking their original position
so they can be returned to those positions.
The individual coulters on the All Seeds Hitch are de-
signed for quick, easy vertical adjustment. All of the
coulters can be raised up 5 1/2” to make them inactive
and 1/4 of the coulters can be lowered up to 3" for band-
ing liquid fertilizer. Each coulter has a depth indicator
cam which pivots on the coulter spring bar and rests
against the top of the coulter clamp. The cams are let-
tered A through D except for the banding coulters which
have cams lettered A through G. Each successive letter
indicates an additional 1/2" of coulter depth with “A” be-
ing the baseline.
To adjust an individual coulter:
1. Loosen the 5/8" jam nuts on the 5/8" square head
set screws, and then loosen the set screws.
2. Raise the coulter slightly and rotate the depth cam to
desired setting and allow the cam to rest against the
top of the coulter clamp.
3. Tighten the set screw on the side of the coulter
clamp first. This squares the coulter bar in the
clamp.
4. Tighten the set screw on the front of the coulter
clamp and then tighten both 5/8" jam nuts on each
set screw.
When completely lifting a coulter, only the front set
screw needs tightening to hold the coulter up, but both
5/8" jam nuts should be snugged to keep the set screws
in place.
For general zone-till planting, the coulter to the right of
each planter row unit is not moved and is used for zone
tillage. The coulter to the left of each planter row unit is
lowered to the desired fertilizer banding depth. All other
coulters are raised up to get them out of the ground. Al-
ways raise a coulter when it is not in use to eliminate
undue wear on that coulter.
Coulter penetration is dependent on the soil condition,
the weight available to force the coulters into the soil,
Zone Tilage and Fertilizer Placement With The All See
Figure 4-10 NOTE: Torque 5/8" set screws 85-100 ft-lbs to ob-
tain adequate holding force.
Zone Tilage and Fertilizer Placement With The All Seeds Hitch.