3P3025AH
Adjustments
Great Plains
| 411-332M | 2019-02-19
69
Side Gauge Wheel Adjustment
Refer to Figure 81 and Figure 82
Disc-to-wheel angle and clearance ideally has the wheel
just touching the disc when the wheel is raised to
planting depth (is up against the stop set by the “T”
handle. The goal is to have both discs and wheels turn
freely, but keep soil and trash from getting between
them.
These two adjustments interact with each other.
Changing one requires at least checking the other.
In addition to changing the disc angle due to changing
depth or new field conditions, these two settings may
need attention over time as the disc and wheels wear
from normal use. This adjustment will also need to be
made if any opener components are replaced.
For 2 inch (5.1 cm) planting depth, adjust side gauge
wheel angle so wheels contact row unit discs at the
bottom of wheel. Check with row units in soil so wheels
are held up.
At the same time, keep side gauge wheels close to
opener discs so openers do not plug with soil or trash.
Wheels should be out far enough so discs and wheels
turn freely.
To adjust side gauge wheels:
1. Raise the planter and install lift cylinder locks.
2. Loosen hex-head bolt
. Move wheel and arm out
on O-ring bushing.
3. Loosen pivot bolt
. Turn hex adjuster
so
indicator notch
is at 5 o’clock to 7 o’clock.
Use this as the starting point for adjustment.
4. Move wheel arm in so side gauge wheel contacts
row unit disc. Tighten hex-head bolt
to clamp arm
around bushing and shank.
•
Tighten hex-head bolt
according to grade:
1
/
2
inch Grade 5 bolt on 25 series:
75 foot-pounds (102 Nm).
1
/
2
inch Grade 8 bolt on 25 series:
110 foot-pounds (149 Nm).
determine grade of bolt.
Figure 81
Disc/Gauge Wheel Alignment
Incorrect
Correct
Opener
discs
Side Gauge
Wheel
Side Gauge
Wheel
Figure 82
Opener-Gauge Wheel Contact
22531
Contact Within this Area
Starting Point
Figure 83
Disc/Gauge Wheel Adjustment
22524
22525
3
2
1
4
4
1
3