Caterpillar — Speed Sensor (Engine) - Adjust
Adjustments · Engine speed sensor (magnetic pickup)
From a Caterpillar service manual covering: BRK1-Up, CAL1-Up, CMC1-Up, CNB1-Up, FDN1-Up. Check it applies to your exact model before use.
Applies to: Caterpillar EUI Engine engine
Procedure
- Remove the speed sensor from the flywheel housing. Remove all debris from the tip. Align a ring gear tooth in the center of the threaded sensor opening.
- By hand, screw the speed sensor into the hole until the end contacts the gear tooth.
- Turn the sensor counterclockwise through 270 degrees (three-fourths turn).
- Tighten locknut to 25 ± 5 N·m (18 ± 4 lb ft). Do not allow sensor to turn.
Specs & values
- Locknut torque: 25 ± 5 N·m (18 ± 4 lb ft)
- Turn sensor counterclockwise 270 degrees after contact
Source: Caterpillar service 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.