HOSE AS 4174941 - Caterpillar

Illustration 1 g00289497
Speed sensor (1) Speed sensor (2) Locknut (A) Air gapThis adjustment procedure is for the engine speed sensor.
Remove the speed sensor (1) from the flywheel housing. Remove all debris from the tip of the speed sensor. Align a ring gear tooth directly in the center of the threaded sensor opening.
By hand, screw the speed sensor (1) into the hole until the end of the sensor contacts the gear tooth.
Turn the sensor (1) in the counterclockwise direction through 180 degrees (one-half turn). Note: Do not allow speed sensor (1) to turn as locknut (2) is tightened.
Tighten locknut (2) to 45 N m (33 lb ft).