Great Plains 3N-4025P Operator Manual - Manual (Page 124)

120 3N-40P Table of Contents Index Great Plains Manufacturing, Inc.
196-538M Table of Contents Index 2014-01-29
Adjusting Disc Contact
Refer to Figure 153 and Figure 154
1.
Raise the drill and install lift cylinder locks.
2. For 20P and 25P Series, remove the side gauge
wheels
on the row unit in need of adjustment.
3. Remove the bolt retaining the opener disc on
one side. Carefully remove the disc. Do not lose the
hub components and spacer washers
, . Make
note of how many spacer washers are between
the disk and the nut bar .
Note: When the bolt is fully removed from the disk, a dust
cap will be loose.
4. To reduce the spacing between the discs (the normal
case), move one spacer washer from the inside
to
the outside of the disc. Do not discard any
spacers. They will be moved to the inside upon
eventual replacement of a completely worn out
blade.
5. Re-assemble and check disk contact.
25 Series Side Gauge Wheel Scrapers
Refer to Figure 175
To adjust scrapers:
1. Loosen nut .
2. Slide scraper toward gauge wheel until scraper
touches tire.
3. Slide scraper away from wheel leaving a
1 ⁄
8
in (3 mm) gap at .
4. Rotate scraper left and right around bolt, making
sure it cannot touch tire if bumped in field. If it can
touch tire, back scraper away from wheel until it
cannot.
5. Center scraper angle on bolt until gap is
constant.
6. Tighten nut .
Figure 174
Opener Disc Spacers
26128
6
5
3
4
7
8
2
3 4
5 6
5
7
8
5
6
3
Figure 175: 25P Series:
Gauge Wheel Scraper
25273
1
2
4
1
2 3
4
1 4
1