Great Plains LC40 Operator Manual - Manual (Page 31)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 27
2014-07-21 Table of Contents Index 591-049M
Row Unit Adjustments
Refer to Figure 20 (depicting an extended row unit populated
with all components, some not used simultaneously)
From top front to bottom back, an LC40 row unit can
include the following capabilities (some optional):
1. Dual Down Pressure Springs: standard
Each row unit is mounted on the frame via parallel
arms which allow the row unit to independently move
up and down while remaining level with the ground.
These springs are normally adjusted only for rows in
tire tracks. See “Row Unit Down Pressure
(Springs)” on page 28.
2. Coulter Depth: standard
This jackscrew (crank and scale provided) adjusts
the depth of the coulter blade relative to the row. See
“Coulter or Tire Height” on page 29.
3. Coulter Disc Scraper (not visible): standard
This adjustment needs to be made when a coulter
disc is replaced, and checked periodically. See
“Coulter Scraper Adjustment” on page 30.
4. Barring-Off Disc Height: option
This adjustment sets the vertical depth of cultivation
at the bed shoulders. See “Barring-Off Disc Height”
on page 31.
5. Barring-Off Disc Width: option
This adjustment sets the horizontal width of
cultivation at the bed shoulders. See “Barring-Off
Width” on page 31.
6. Lister Height: Option 10 or 20
This adjustment sets the depth of the furrow relative
to the tool bar. See “Lister Adjustments” on
page 32.
7. Furrower Disc Height and Angle: Option 10 or 20
This adjustment controls bed shoulder shaping. See
“Furrower Disc Adjustments” on page 33.
8. Cultivator Height: Option 30
This adjustment sets the depth of furrow cultivation
relative to the tool bar. See “Cultivator Height” on
page 34.
9. Cultivator Deflector Angle: Option 30
This adjustment sets the width of furrow cultivation.
See “Cultivator Deflector Height and Angle” on
page 34.
Equipment Damage Risk:
Do not back up with row units in the ground. To do so may
cause tool damage.
Figure 20
Composite LC40 Row
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