Checking Meter Transmission Output

If meter output is inconsistent with desired application rate, even though correct main clutch (tire) and one-way clutch (row spacing) sprockets are installed, transmission should be checked for possible internal damage.

To check transmission output:

1. Set suspect transmission to 50 setting.

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NOTE: All transmissions and output shafts turn when crank handle is turned. All transmissions can be checked at the same time.

2. Turn crank handle (A) a few turns and watch for meter sensor ring rotation. This ensures that independent clutch is on and that meter drive coupling is engaged.

3. Select and mark one tooth of the meter rpm sensor ring (B). This tooth will be used as the transmission output indicator; be sure it is clearly marked. Selecting a tooth directly under the meter rpm sensor will provide an accurate, easy to view, stationary reference point.

4. Accurately note the starting positions of the sensor ring mark and crank handle.

5. Turn crank handle six full counterclockwise revolutions while observing sensor ring mark; it should make approximately one full 360 degree revolution.

Transmission is OK if sensor ring makes one full revolution ± 4 teeth.

If sensor ring does not return to starting position ± 4 teeth, transmission has failed and must be replaced.

A-Crank Handle
B-Meter RPM Sensor Ring

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