Great-plains 2525P Operator Manual User Manual Page 64
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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 Scrapers
20433
13
2
4
3
5
1
3
2
4
5
Figure 75: 25 Series
Spreaders and Scrapers
22839
1
3
2
4
5
3
4
1
3
2
4
5
- Operator Manual 1
- Table of Contents 3
- Important Safety Information 5
- Shutdown and Storage 6
- Use Safety Lights and Devices 6
- Transport Machinery Safely 6
- Avoid High Pressure Fluids 7
- Practice Safe Maintenance 7
- Tire Safety 7
- Prepare for Emergencies 8
- Wear Protective Equipment 8
- Handle Chemicals Properly 8
- Safety At All Times 9
- Safety Decals 10
- 818-055C 10
- 838-266C 10
- 838-265C 11
- 838-267C 11
- 818-590C 12
- 838-102C 12
- 818-337C 12
- 818-339C 13
- 818-682C 13
- 818-398C 13
- 818-587C 14
- 818-855C 14
- 818-752C 14
- Introduction 15
- Owner Assistance 16
- Preparation and Setup 17
- Color Hydraulic Function 18
- Leveling the Drill 19
- Frame Height 20
- Operating Instructions 21
- Field Operation 22
- Seed Lubricants 23
- Transporting 24
- Marker Operation 25
- Model 20P Only: 26
- All Models: 26
- Adjustments 27
- Ground Drive Adjustments 28
- Marker Adjustments 29
- Marker Disk Adjustment 30
- Marker Chain Adjustment 30
- Marker Speed 31
- Row Unit Adjustments 32
- Row Unit Down Pressure 33
- Cam Notch Pounds 34
- Row Unit Shutoff 36
- 25 Series Row Unit Lock-Up 37
- 25 Series Coulter Adjustments 38
- Side Gauge Wheel Adjustment 41
- Seed Firmer Adjustments 49
- Press Wheel Adjustment 51
- Troubleshooting 53
- Planting too much 54
- Acremeter does not 54
- Problem Cause Solution 54
- Uneven seed depth 56
- Excessive seed 56
- Maintenance and Lubrication 59
- Marker Maintenance 60
- Drive System Maintenance 62
- Opener Side Wheel Maintenance 63
- Opener Disc Maintenance 64
- Seed Tube Maintenance 65
- Grommet Maintenance 65
- Meter Maintenance 67
- Installation Steps 70
- Annual Maintenance 70
- Lubrication 71
- Seasonally 72
- Seed Monitor 73
- Hitch Setback Kit 74
- Gauge Wheels 74
- Baffle Kits 75
- Seed Tube Plug 75
- Weight Bracket Kit 75
- Unit-Mounted Disk Coulters 76
- 20 Series Seed Meter Wheels 77
- 25 Series Seed Meters 78
- 25 Seed Meter Wheels 78
- Scrapers 79
- Seed-Lok® Seed Firmer 79
- Keeton Seed Firmer 80
- Row Unit Press Wheels 80
- Appendix 81
- Torque Values Chart 82
- Marker Extension 83
- Model 2025P Marker Extension 87
- 109.25 in 87
- 277.50 cm 87
- Model 2520P Marker Extension 90
- Model 2525P Marker Extension 94
- Chain Routing 97
- 20 Series Meter Drive Chain 98
- 25 Series Meter Drive Chain 99
- Hydraulic Diagrams 100
- Warranty 101
- 118-231M 2013-05-10 102
- 2013-05-10 118-231M 103
- Salina, Kansas 67402-5060 USA 106
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