Front ABS Sensor Air Gap Measurement

  1. Using feeler gauges, measure the air gap between the wheel speed sensor and the pulser ring.
    2. Air gap measurement

    1. ABS sensor (front sensor shown)

    2. Shim

    3. Pulser ring

    4. Fixing

  2. Rotate the wheel and repeat the measurement in several places to ensure the pulser ring is not distorted or bent. Renew a damaged pulser ring.
  3. Adjust the air gap using the correct shim to achieve an air gap between 0.74 mm and 1.36 mm.
  4. Shims are available in the following sizes:
    5. * shims - 0.5 mm, 1.0 mm, 1.5 mm and 2.0 mm.
  5. If necessary, remove the wheel speed sensor, fit the correct thickness shim and refit the wheel speed sensor and tighten the fixing to 9 Nm.
  6. Repeat the air gap measurement. Readjust as necessary.