Great Plains 1007NT Operator Manual - Manual (Page 31)

10/06/2010 150-290M
Great Plains Manufacturing, Inc. Adjustments 27
Adjustments
To get full performance from your drill, you need an
understanding of all component operations, and many
provide adjustments for optimal field results.
The 1007NT has double-disc 07 Series openers with
depth-controlling press wheels mounted on floating
opener frames. Opener bodies are staggered for easy
soil flow. All openers pivot on a common axis to maintain
consistent depth as the opener frame follows contours. A
spring provides the down pressure necessary for double
discs to open a seed furrow. The spring allows openers
to float into depressions and over obstructions. Individual
openers can be adjusted to account for tire tracks.
Even if your planting conditions rarely change, some of
these adjustment items need periodic attention due to
normal wear.
Seed and Fertilizer Rate
Seed are applied by fluted feed meters driven by the
ground wheels. Independent mechanisms drive main
seed, fertilizer, native grass and small seeds application.
Main Box Seed rate is controlled by adjustments for:
• Left Drive Type gearbox lever
• Seed Rate Handle at box (drill front)
• Feed Cup Door (one each seed tube)
Native Grass rate is controlled by:
• Rate Reduction Sprockets (see separate manual)
• Right Drive Type gearbox lever (drill front)
• Driven Sprocket at Native Grass Seed box
Small Seeds rate is controlled by:
• Rate Handle at box (drill rear)
Fertilizer rate is controlled by:
• Rate Adjuster at box (drill rear)
Planting Depth
Setting nominal planting depth, and achieving it consis-
tently, is affected by multiple adjustable drill functions,
from greatest to least effect they are:
• Coulter Height (depth control valve)
• Opener Depth (Press Wheel Height)
• Opener Down Pressure, and;
• Disc Blade Adjustments (as blades wear).
Adjustment Page The Adjustment Affects
Leveling the Drill
Hitch Height 74 Keeping frame level in field
Frame Height (Front) 44 Coulter depth
Side-to-Side Level 44 Consistent planting across drill
Drill Weight Adjustment 32 Achieving coulter depth in heavy No-Till conditions
Setting Main Box Seed Rate R
Setting Native Grass Rate R
Small Seeds Rate R Small seeds population
Setting Fertilizer Rate R Fine control of application rate
Row Unit Adjustments 34
Disc Blade Adjustments 35 Consistent seeding depth
Opener Down Pressure 36 Level row units and consistent seeding depth in tire tracks
Disc Scraper Adjustment 36 Consistent seeding depth
Seed Firmer Adjustments 37 Consistent seed placement and coverage
Opener Depth (Press Wheel Height) 37 Seeding depth.
R Rate setting details are in the Seed Rate Manual, Great Plains part number 150-290B, normally located in the Manual Pak
enclosure at the front of the drill.