Planter maintenance series
Part 2: Advanced seed meter

Posted on 01/29/2013 in Planting, Video tips.

seed meter maintenance

Continuing with our planter maintenance series, we’ll explore seed-meter inspection. The simple design of the Case IH Advanced Seed Meter greatly reduces maintenance demands as compared to other seed meters. With just a few simple steps, operators can inspect the meter and replace worn parts to maintain the efficiency and accuracy.

  • Begin by removing the seed hopper and meter from the row unit.
  • Disconnect and inspect the main vacuum hose and its connection to the meter.
  • Three latches hold the meter cover to the meter housing. Remove the cover and inspect the surfaces on the cover. Six triangular wear indicators are molded into the cover. Inspect the indicators for wear, and replace the cover if any indicators are worn beyond recognition.
  • Replace the seed disk when the surface is worn and the indicator slots are no longer visible.
    • When replacing the disk, make sure adhesive labels are removed from the outer area of the disk at least 1.5 inches back from the seed holes on either side of the disk.
    • Also inspect the seed holes and replace the disk if any holes are worn out-of-round. It is normal for seed disks to develop circular grooves as the disk wears in and mates to the housing.
    • Disks must always be returned to the same meter housing for optimum life and performance.
  • Rotate the singulator dial to make sure the spool assembly moves freely in its tracks.
    • Remove debris with compressed air if necessary to ensure free movement. Do not use chemical solvents to clean the singulator.
    • The singulator spools are manufactured with a wear indicator groove around the outer edge. Replace the spool when it is worn to the bottom of the groove.
    • Lubricate the singulator spool bearing surfaces with dry powdered graphite.

Other seed meter tips:

  • Check for debris in the seed meter screen and behind singulators.
  • Inspect the agitator for any signs of wear, breakage or permanent distortion.
  • Make sure the disk rotor drive turns freely.
  • When all components are removed from the meter housing, wash the meter housing with soap and water to remove debris.
  • Use only dry powdered graphite to lubricate the singulator components.
  • Clean debris from the meter brushes. The brushes will naturally become deformed in operation, which is not a cause for replacement. Replace the brushes only if leakage occurs from the meter housing.
  • Check the drive coupler pawls to assure they rotate freely and completely to allow full engagement and disengagement of the disk drive rotor.
  • Check the seed tube and sensor for signs of debris, which would affect seed movement, placement and sensing. Roughness or wear in the seed tube can affect seed spacing patterns, and should be repaired by replacing the tube.
  • Clean seed sensors with soap and water, or the Seed Tube Cleaning Brush (Part Number 346290A1).

A key element in achieving long life and good meter performance is to return seed disks to their original meter housings. Wear patterns will develop during operation, and if seed disks are mixed, new wear patterns will accelerate disk wear and could result in premature replacement. Meter performance issues may develop due to variations in the operating fit from one row unit to another. Number disks and meter housings to assure disks are always returned to the same housing.

Watch the seed meter inspection video below.


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