GREAT PLAINS 3N-3010, Operator'S Manual, Page: 58 / 118

54Great Plains | | 4/22/19 Table of Contents Index Great Plains | 54
196-366m Table of Contents Index Maintenance and Lubrication
20 Series Opener Disk Spreader
Refer to Figure 41
1. On 20 Series openers, remove side gauge wheel
arm and wheel assembly by removing
5/8 inch bolt (4) to access opener disks and
spreaders.
2. With the unit raised, check blade spreader (1) for
wear. Replace spreader if it is 7/16 inch wide or
narrower, or if opener is plugging with dirt. To
replace, remove disk blade (3). Drive out roll pins (2)
and install a new spreader.
 NOTE: Disk spreaders are loose to move freely.
Seed Flap Replacement
(S/N 1022UU-)
Refer to Figure 42
To replace a seed flap use a needle nose or similar tool
and squeeze together the tabs, as shown. Pull plastic
seed flap down out of metal bracket.
If replacing with 817-349C: Push new seed flap up
through metal bracket until tabs on seed flap snap in
place.
Seed Flap Replacement (S/N )
Refer to Figure 43
If replacing with 816-302C seed flap use a needle
nose pliers or similar tool to grasp “T” top of flap. Pull
upward to pull flap up out of metal bracket .
Push new seed flap down through metal bracket
until flap snaps into place with “T” top resting on top of
bracket.
19101
20432
Figure 41
19101
18398
Metal
Bracket
Squeeze
Tabs
Figure 42
817-349C
1
2
Figure 43
816-302C
31047
1
2
1 2