Great Plains 2525F Operator Manual - Manual (Page 56)

52 2020F, 2025F, 2520F and 2525F
118-232M 01/23/2012
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 67
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 Disk Contact
Region” on page 36.
FigureSpacer 25 Series Disk Spreaders and Scrapers
Refer to Figure 68
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 Disk Contact
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.
FigureSpacer
Figure 67: 20 Series
Spreaders and Scraper s
20433
1 3
2
4
3
5
1
3
2
4
5
FigureSpacer
Figure 68: 25 Series
Spreaders and Scraper s
22839
1
3
2
4
5
3
4
1
3
2
4
5