
3P1006NT
Operation
Great Plains | 151-144U | 2019/03/14
23
Coulter Down-Force Adjustment
Crushing Hazard
To avoid injury from working under the
machine, this adjustment should only be
done by qualified personnel.
Coulter springs are preset at 25.4 cm, giving coulters
an initial operating force of 181 kg before the spring
compresses. This setting is adequate for many
difficult no-till conditions.
In normal operation at target running depth, springs
are at full extension or only slightly compressed.
They compress briefly at obstructions and in denser
soil.
In heavy no-till conditions, you may observe the
springs in compression most of the time. This means
that the blades are not reaching the desired coulter
depth. If adequate drill weight is available, you can
increase the spring down-force to compensate.
In light but rocky conditions, the factory setting may
be higher than needed. Extend blade life by reducing
the force at which the blades ride up over
obstructions.
If all springs are continuously in
compression, the coulters can lift the drill off
the ground at the ground drive wheels,
resulting in low seeding rates and uneven
seed depth. If high forces are required,
frame weights are probably required.
To adjust the coulter spring:
1.
Raise the drill and install transport locks.
2. Determine the new spring length (1) desired. See
the table below.
3. Measure the current length of the spring(s) to be
changed. If already shorter than 24.7 cm, or
longer than 26 cm, do not further adjust them.
4. Loosen the jam nut (2).
5. Rotate the adjuster nut (3) until the spring is at
the new length. Tighten the jam nut.
06 Series Row Unit
Disk blades (1) 2 per row unit - Double disk blades
open a furrow creating the seed bed. Spacers adjust
the blades for a clean furrow. See “
Down pressure springs (2) - Adjustable springs
provide the force to get the row unit and attachments
into the soil prepared by the coulter. See “
Main seed delivery tube (3) - No adjustments are
necessary.
Seed firmer (4) - Improves seed-soil contact. No
adjustments required. Seed flap is standard,
Seed-Lok
®
firming wheel is optional. The seed flap
may need to be shortened if Seed-Lok
®
is
field-installed.
Disk scraper (5) - In sticky soils a scraper helps keep
the opener disks operating freely. A slotted scraper is
standard, spring-loaded carbide scraper is optional.
Native grass seed delivery tube (6) - optional. No
adjustments are necessary.
Fertilizer delivery tube - optional. No adjustments are
necessary.
Small seed delivery tube (7) - optional. No
adjustments are necessary. If fertilizer is also
installed, small seeds are delivered by a side tube.
!
i
Spring Length
Force at Blade
26.7 cm
79 kg
26.0 cm
136 kg
25.4 cm
181 kg
24.8 cm
238 kg
2
3
1
27139
Содержание 3P1006NT-1575
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