Transmission Speed Sensor: Service and Repair

Mainshaft and Countershaft Speed Sensors Replacement
1. Disconnect the mainshaft speed sensor connector and countershaft speed sensor connector.





2. Remove the mainshaft speed sensor (A) and countershaft speed sensor (B).
3. Install the new O-ring (C) on the mainshaft speed sensor, and install the mainshaft speed sensor in the transmission housing.
4. Install the new O-ring (D) on the countershaft speed sensor, and install the countershaft speed sensor in the transmission housing.
5. Check the connectors for rust, dirt, or oil, then connect the connectors securely.