Great Plains 2525P Operator Manual - Manual (Page 64)

60 2020P/2025P and 2520P/2525P Great Plains Manufacturing, Inc.
118-231M 2013-05-10
Opener Disc Maintenance
Note: It is normal for the blade spreader to have some
looseness in the holder and between the blades.
Some looseness is required for proper operation.
1. Remove side gauge wheels from arms to access
row-unit disks and scrapers.
2. While performing this maintenance, re-check blade
contact per the procedure on page 36.
Note: You may need fewer shims on worn disks.
20 Series Spreaders and Scrapers
Refer to Figure 74
3.
With the unit raised, check blade spreader for
wear. Replace spreader if it is 3 ⁄
4
in (19mm) wide or
narrower. To replace, remove disk blades , drive
out roll pins , and install new spreader.
4. When reinstalling disk blades, put three shims
between bearing and shank on each blade. Store
any removed shims on the outside of the disk
.
5. Check amount of contact between blades, and
adjust number of shims as needed. Store extra
shims on outside of blade. See “Opener Disc Con-
tact Region” on page 36.
25 Series Disk Spreaders and Scrapers
Refer to Figure 75
3.
With the unit raised, check blade spreader for
wear. Replace spreader if it is 1 ⁄
2
in (12.7mm) wide or
narrower. To replace, remove disk blades , drive
out roll pins , and install new spreader.
4. When reinstalling disk blades, put two shims
between bearing and shank on each blade.
5. Check amount of contact between blades, and
adjust number of shims as needed. Store extra
shims on outside of blade. See “Opener Disc Con-
tact Region” on page 36.
6. Check that outside disk scrapers are formed to
disk blades to help remove any mud. Bend and twist
scrapers to fit blades as necessary. After every 200
acres of operation, check outside scrapers for
proper adjustment and wear. Replace outside
scrapers as necessary.
Figure 74: 20 Series
Spreaders and Scraper s
20433
1 3
2
4
3
5
1
3
2
4
5
Figure 75: 25 Series
Spreaders and Scraper s
22839
1
3
2
4
5
3
4
1
3
2
4
5