Great Plains 3N-4020 Operator Manual - Manual (Page 117)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 113
2013-10-29 Table of Contents Index 196-359M
5. To prevent plugging loosen clamp bolt and slide
arm inward to take up gap between side wheel and
disk blade.
6. Adjust side gauge wheels. See “Side Gauge Wheel
Adjustments” on page 86.
20 Series Opener Disk Spreader
Refer to Figure 160 and Figure 161
1. Remove side gauge wheel arm and wheel assembly
by removing
5 ⁄
8
-11x2 1 ⁄
2
bolt to access opener
disks and spreaders.
2. With the unit raised, check blade spread for wear.
Replace spreader if it is 7 ⁄
16
in (11 mm) wide or nar-
rower, or if opener is plugging with dirt. To replace,
remove disk blade
. Drive out roll pins and install
a new spreader.
Note: Disk spreaders are loose to move freely.
Figure 161
20 Series Spreader-Scraper
20433
a
b
c
8
8
a
b c