Great Plains 2420 Operator Manual - Manual (Page 13)

11
Section 1 Preparation and Setup
5/15/06 2400, 2410 and 2420 Three-Point Drill 118-706M
Great Plains Mfg., Inc.
Leveling Drill
Model 2400
Initially adjust drill so opener tube runs 18 1/4 inches
above ground when drill is lowered in field. See Figure 1-3.
Figure 1-3
Initial Operating Height
To adjust:
1. Loosen jam nut near top clevis of each gauge-wheel
turnbuckle. Refer to Figure 1-4.
NOTE: Jam nut is left-hand threaded.
2. Bolt upper clevis in upper mount hole as shown in Fig-
ure 1-4.
3. Set turnbuckle length. Turn turnbuckle to shorten or
lengthen as necessary. Initially set length to 17 3/16
inches between pin centers to achieve the 18 1/4-inch
dimension mentioned above. When adjusting turn-
buckle, remember:
•
Lengthening turnbuckle raises drill.
•
Shortening turnbuckle lowers drill.
Figure 1-4
Gauge-Wheel Turnbuckle, Straight Arm Openers
4. After adjusting both turnbuckles to same length, tight-
en jam nuts.
5. Level drill with top three-point link. When drill is level,
the gap between the spring-rod casting and the cross
bolt will be about 2 inches. See Figure 1-5. This is a
general dimension that will vary with the amount of
down pressure required for your planting conditions.
Figure 1-5
Normal Spring Rod Setting
12068
Jam Nut
10548