Sensor Gap

Measure the distance "A" between ABS sensor surface and sensor pole face.

Fig 1: Measuring Distance "A" Between ABS Sensor Surface & Sensor Pole Face
Courtesy of SUBARU OF AMERICA, INC.
Measure the distance "B" between surface where the front axle housing meets the ABS sensor, and the tone wheel.
NOTE: Measure so that the gauge touches the tone wheel teeth top.

Fig 2: Measuring Distance "B" Between Surface Where Front Axle Housing Meets ABS Sensor
Courtesy of SUBARU OF AMERICA, INC.
Find the gap between the ABS sensor pole face and the surface of the tone wheel teeth by putting the measured valves in the formula below and calculating.
ABS sensor clearance = B - A
1. ABS sensor standard clearance: 0.3 - 0.8 mm (0.012 - 0.031 in)
NOTE: If the clearance is outside specifications, adjust the gap using spacer (Part No. 26755AA000).