GREAT PLAINS 3S-4000, Operator'S Manual

Page: 55 / 126

2018-06-19 Table of Contents Index 195-442M
3S-4000, 3S-4000F, 3S-4000HD, 3S-4000HDF Table of Contents Index Adjustments 51
Adjustments
To get full performance from your drill, you need an
understanding of all component operations, and many
provide adjustments for optimal field results.
Even if your planting conditions rarely change, some of
these adjustment items need periodic attention due to
normal wear.
Seed and Fertilizer Rate
Materials are applied by fluted feed meters driven by the
gauge wheels. Independent mechanisms control seed
and fertilizer application. Optional Small Seeds rate is
controlled entirely by Rate Handles.
Main Box Seed rate is controlled by adjustments for:
•
Drive Type sprocket (one sprocket each gauge
wheel)
•
Seed Rate Handle (one handle each seed box)
•
Feed Cup Door (one each seed tube)
Fertilizer rate is controlled by:
•
Range sprockets (one set each fertilizer box)
•
Final Driver/Driven sprockets (one set each box)
Planting Depth
Setting nominal planting depth, and achieving it
consistently, is affected by multiple adjustable drill
functions, from greatest to least effect they are:
•
Opener Depth (Press Wheel Height)
•
Opener Frame Down-Force,
•
Row Unit Down Pressure (Spring),
•
Opener Height,
•
Opener-Subframe Adjustment,
•
Frame Weight (at higher pressures), and;
•
Disk Blade Adjustments (as blades wear).
Adjustment Page The Adjustment Affects
Setting Main Box Seed Rate SRM
a
a. SRM: Refer to the Seed Rate Manual (195-325B) for details on these topics.
Setting Drive Type SRM
a
Coarse control of seeding rate
Main Box Seed Rate Handle SRM
a
Fine control of seeding rate
Position Seed Cup Doors SRM
a
Consistent seed delivery for certain seed sizes
Setting Fertilizer Rate SRM
a
Setting Fertilizer Drive Range SRM
a
Coarse control of application rate
Setting Fertilizer Final Drive SRM
a
Fine control of application rate
Small Seeds Rate SRM
a
Small seeds population
Frame Level 52 Section-to-section planting consistency
Opener Frame Down-Force 54 Consistent seeding depth
Opener-Subframe Adjustment 57 Level row unit running in desired pressure range
Frame Weight 53 Achieving higher down-force settings
00HD Row Unit Adjustments 59
Opener Height 60 Seeding depth in tire tracks
Row Unit Down Pressure (Spring) 60 Level row units and consistent seeding depth in tire tracks
Disk Blade Adjustments 61 Consistent seeding depth
Seed Firmer Adjustments 62 Consistent seed placement and coverage
Opener Depth (Press Wheel Height) 64 Seeding depth
Marker Adjustments 65 Correctly offset and visible pass marks