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JD 9770 Moisture Sensor
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Crop Walker
Posted 7/30/2020 18:07 (#8405525)
Subject: JD 9770 Moisture Sensor


Central Ontario
Sensor was stalling and blowing the fuse.
Removed, cleaned, put power to motor and it works.

Replaced the circuit board, installed back on combine, turnkey on and sounds like meter cycles like normal.

Start harvesting get no moisture reading, and error code “ meter not filling”
When combine is turned off meter fully retracts so plunger is at very bottom of cell not at the top of the stroke like normal.
Took battery charger up into tank and put power to motor so plunger was fully extended thinking had a timing issue.
Turn key on and meter cycles but ends up at bottom of stroke again when turned off.
Getting aggravated. Did l miss something when installing the new circuit board?
TIA
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