Caterpillar — Engine Speed/Timing Sensors - Check/Clean/Calibrate
Maintenance · Camshaft and crankshaft speed/timing sensors
From a Caterpillar owner's manual covering: 3406E, C15, SEBU7005-08. Check it applies to your exact model before use.
Applies to: Caterpillar 3406E, Caterpillar C15
Before you start
- Keep all parts clean from contaminants; contaminants may cause rapid wear and shortened component life.
Procedure
- Camshaft sensor: disconnect harness assembly; remove bolt and sensor; remove O-ring seal from sensor.
- Check condition of plastic end of sensor for wear and contaminants; clean metal shavings and debris from face.
- Calibrate the sensor using the procedure in the Troubleshooting Guide.
- Install a new O-ring seal; lubricate O-ring with clean engine oil.
- Position sensor in the housing; install bolt; connect harness assembly.
- Crankshaft sensor: disconnect harness assembly; remove bolt and sensor; remove O-ring seal.
- Check condition of plastic end for wear and contaminants; clean face; calibrate per Troubleshooting Guide.
- Install a new lubricated O-ring seal; install position sensor in front housing; install bolt; connect harness assembly.
Full service-parts list: Caterpillar 3406E →, Caterpillar C15 →
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.