GREAT PLAINS 3P806NT Instrukcja regulacji w terenie - Strona 3
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Coulter Down-Force Adjustment:
Coulter springs are factory preset at 10 in. (25.4 cm),
giving coulters an initial operating force of 400 pounds
before the spring compresses. This setting is ade-
quate for many difficult no-till conditions.
To adjust the coulter spring:
1) Completely raise the drill and determine the new
desired spring length.
Spring Length
10 1/2 in. (26.7 cm)
10 1/4 in. (26.0 cm)
10 in. (25.4 cm)
9 3/4 in. (24.8 cm)
2) Measure the current length of the spring(s) to be
changed. If the springs already measure shorter than
9 3/4 in. or longer than 10 1/4 in., do not further adjust
them.
3) Loosen the jam nut (2).
4) Rotate the adjuster nut (3) until the spring is at the
desired length. Re-tighten the jam nut.
Note: If all springs are continuously in compression,
the coulters can lift the drill off the ground (at the
ground drive wheel), resulting in low seeding rates
and uneven seed depth. If high forces are required,
frame weights are probably required.
Opener Down Pressure Adjustment:
The "W" clips located on the opener spring rods
should be in the lowest hole. This is the correct loca-
tion in all conditions. The "W" clips can be raised on
openers behind wheel tracks only if penetration is not
adequate.
Force At Blade
175 lbs. (79 kg)
300 lbs. (136 kg)
400 lbs. (181 kg)
525 lbs. (238 kg)
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