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Transmission Speed Sensor: Service and Repair

Speed Sensor Replacement
1. Disconnect the connectors from the mainshaft and countershaft speed sensors.





2. Remove the bolt securing the mainshaft speed sensor, then remove the mainshaft speed sensor (A) from the end cover.





3. Remove the bolt securing the countershaft speed sensor, then remove the countershaft speed sensor (A) from the transmission housing.
4. Replace the O-rings (B) with new ones before installing the sensors.
5. Install the mainshaft and countershaft speed sensors. When installing sensors, do not allow dust or other foreign particles to enter the transmission.
6. Check the connectors for rust, dirt, or oil, then connect them.