GREAT PLAINS PL5700, Руководство оператора

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PL5700 Planter Table of Contents Index Maintenance
Great Plains | 411-681M | 04/08/2021 64
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Seed Meter Brushes
Possible Chemical Hazard
Brushes will have talc and graphite residue,
and may have residue of hazardous seed
treatments. Wear a respirator for brush cleaning.
A HEPA vacuum cleaner is recommended for brush
cleaning. Washing brushes is not recommended and
may cause matting. Do not scrape the brushes with
sharp instruments.
With proper maintenance, bushes normally last
several seasons before needing replacement.
The first indications of excess brush wear or damage
are normally observed on the console or in air
system operation

If the tufted brushes (1) are worn or damaged,
the seed doubles rate rises, increasing
population.
Finding an occasional cracked seed hung up on
a tuft fiber is not uncommon, and is not an
indicator that brush maintenance is required.
Remove the seed and continue with operations.

If the strip brushes (2) are worn or damaged, air
pressure regulation may become unstable or
require increasing fan speed over time.
If recommended fan rpm ranges need to be
exceeded, the regulated air system may be
taking too much air due to meter leakage.
In severe cases, seed may leak past the strip
brushes, causing spikes in population. If seed is
frequently seen between the strip brushes, one
or both may need replacement.

If the seed drop brush (3) is worn or damaged, its
anti-static effect may fade, which can result in
skips due to smaller seeds failing to release, and
lower population.
If an obvious groove is worn in the drop brush,
replace the brush.
Seed Meter Brush Replacement
Brushes are designed for long life and last multiple
seasons before needing replacement. Excess
doubling that does not respond to adjustments are
an indication when brushes are worn out.
See the Parts manual for current brush replacement
part numbers.
Tufted Brush Replacement
Performance Risk
It is critical that no debris be caught between
the tufted brush and mounting surface. Even
objects as thin as paper can negatively impact
meter performance.
Fracture Risk
Do not tighten the fasteners to normal torque or
the brush plate may fracture.
To replace tufted brush:
1. Remove and save both bolts (1) and nuts.
2. Remove the tufted brush assembly (2), and
replace with a new assembly.
3. Insert the bolts and start the nuts. Carefully
tighten each nut just until there is no play under
the screw heads.
4. Add a half turn to the nuts.
Strip Brush Replacement
Do not loosen or remove any of the bolts (1) retaining
the brush holder.
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3
68647
2
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68647A
2
2
68647A
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3
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5
2
1