Great Plains 3N-3020P Operator Manual - Manual (Page 38)

3N-3010P and 3N-3020P
196-248M 4/23/2010
36
Side Gauge Wheels 20 Series Openrers
Refer to Figure 20
The side gauge wheels have two, interrelated
adjustments:
• angle of side gauge wheel, and
• distance between side gauge wheel and row
unit disk.
Refer to Figure 21
Adjust side-gauge-wheel angle so the wheels con-
tact the row unit disks between 4 and 8 o’clock at
the bottom of wheel.
At the same time, keep the side gauge wheels close
to the opener disks so openers do not plug with soil
or trash but far enough out so the disks and wheels
turn freely.
• If contact point is between 4 to 8 o’clock but
distance to tire is not correct, then add or re-
move shims as needed. DO NOT ADJUST
BEARING AS THAT WILL ADJUST WHEEL-
TO-DISK CONTACT AREA ONLY.
Refer to Figure 22
To adjust Wheel-to-Disk contact area of side gauge
wheels:
1. Raise drill slightly to remove weight from side
gauge wheels.
2. Loosen hex-head bolt (1). Move wheel and arm
out on o-ring bushing.
3. Loosen pivot bolt (2). Turn hex adjuster (3) so
roll pin (4) is at 1 o’clock. Use this as the starting
point for adjustment.
4. Move wheel arm in so side gauge wheel con-
tacts row unit disk. Tighten hex-head bolt (1) to
clamp arm around bushing and shank.
5. Check the wheel-to-disk contact. Lift wheel and
arm. When let go, the wheel should fall freely.
• If wheel does not contact disk from 4 to 8
o’clock, move hex adjuster until wheel is an-
gled for proper contact with disk.
• If wheel does not fall freely, loosen hex-head
bolt (1) and slide wheel arm out just until wheel
and arm move freely. Retighten hex-head bolt.
6. Keep turning hex adjuster and moving wheel
arm until the wheel is adjusted properly. When
satisfied, tighten pivot bolt to 110 foot-pounds.
Tighten pivot bolt (2).
Side Gauge
Wheel
Side Gauge
Wheel
Opener
Disks
Incorrect Correct
Figure 20
Side Gauge Wheels
17812
Figure 21
Wheel-to-Disk Contact Area
8 o’clock 4 o’clock
Figure 22
Side Gauge Wheel Adjustment
Starting Point
18450
2
1
3
4
Note: Wheel touches at bottom and gaps open 3/
8” to 5/8” at top.