Great Plains AS20 Operator Manual - Manual (Page 22)

AS15 and AS20 Planting System 148-153M 4/14/05 20 Great Plains Mfg., Inc.
Section 4 Hitch, Drill, & Planter Adjustments For No-Till Planting Conditions
Refer to your 3-Point Drill Operator’s manual for addi-
tional setting information.
Coulter Adjustments
The coulters on the All Seeds Hitch are designed with
the versatility to be used with either a drill or a planter for
no-till seeding. They are adjustable both vertically and
horizontally to track in line with drill openers or to provide
some zone tillage for no till planter row units.
The coulters on the All Seeds Hitch are set at the factory
to track in line with the openers on a 7 1/2" row spacing
3-point drill. Never move the coulters horizontally with-
Press Wheel Adjustment
Figure 4-8
12100
NOTE: When drilling in soft soil conditions where
sinking of your drill gauge wheels may be a problem,
cylinder stop bushings may be added to the lift cyl-
inders of the All Seeds Hitch to allow your transport
tires to run on the ground and assist in supporting
the drill and hitch weight. Cylinder Stop Bushing
Sets (G.P. #810-120C) are available through your
Great Plains Dealer. Two Cylinder Bushing Sets are
required for the All Seeds Hitch; (One for each lift
cylinder). Make sure when adding cylinder stops
that your downward floating gauge wheels are ad-
justed to the top of their motion range. This will allow
your gauge wheel to follow the ground when drilling
in rough terrain and keep constant seed metering. If
the transport wheels carry too much of the weight,
the drill gauge wheels may raise off the ground and
cause skips to occur.
4. Set the individual opener down pressure springs to
their lowest spring setting.
a. For 00 Series drills with straight arm double disk
openers, set the opener spring rod so the “W”
clip is in the lowest hole as shown in
Figure 4-6.
b. For 10 Series drills with parallel arm double disk
openers, set the down pressure spring to its
lowest setting. The spring adjustment cam is
positioned with the lock pin in the rear most slot
for the lowest spring setting. See Figure 4-7.
5. Adjust the seeding depth of the individual openers
by lifting up and sliding the press wheel adjustment
knob until the desired depth is achieved Figure 4-8.
Minimum Pressure
Figure 4-6
12102
Parallel Linkage Opener At Minimum Spring Setting
Figure 4-7
12132
12104
Minimum
Pressure
Maximum Pressure