Great Plains PD8070 Operator Manual - Manual (Page 34)

401-479M Table of Contents Index 2014-07-23
30 PD8070 Table of Contents Index Great Plains Manufacturing, Inc.
Adjustments
To get full performance from your PD8070 Planter, you
need an understanding of all component operations.
Many provide adjustments for optimal field results. Even if your planting conditions rarely change, some of
these items need periodic adjustment due to normal
wear.
Setting Material Rates
Rates are set separately for seed and fertilizer.
Seed rate is determined by:
1. consulting the seed rate charts,
2. installing the correct meter (and in the case of the
brush meter, the appropriate seed plate),
3. setting the transmission driver/driven sprocket
combinations, and
4. checking the rate.
See “Seed Rate” on page 31.
Fertilizer rate is set by:
1. adjusting for the density of your material,
2. consulting the rate chart for the adjusted density,
3. setting the rate range at the augers in each hopper,
4. setting the transmission driver/driven sprocket
combinations, and
5. checking the rate.
See “Dry Fertilizer Rate” on page 37.
Adjustment Page The Adjustment Affects
Frame height 17 Planting depth
Frame level 17 Planting consistency
Contact Drive Tension 39 Planting consistency
Transmission Sprocket Selection 31 Population rate
Marker Width 40 Intended row spacing
Dual Marker Speed Adjustment 41 Reliable marker operation
Fertilizer Setup 37 Seed germination and growth
30 Series Row Units 45
Row Unit Down Pressure 46 Planting depth
Row Cleaner Adjustments 47 Consistency of planting depth
Coulter Adjustments (Option) 48 Row pre-groove depth
Row-Unit Opener Adjustments 49 Seed groove depth and width
Adjusting Gauge Wheel Scrapers 51 Consistent seed groove depth
Seed Meter Setup and Adjustment 52 Consistent seed population
Seed Firmer Adjustment (Option) 55 Seed-soil contact
Press Wheel Adjustment 55 Effective soil coverage
Monitor Adjustments - Refer to Seed Monitor manual
Gauge Wheel Mud Scrapers 20 Consistent drive rate; consistent planting depth