MM6 Resolve Inconsistent Air Gap Concern

- Remove the front disc brake hub and rotor and inspect the tone ring/hub mounting surface. Verify the tone ring is pressed straight and fully onto the hub. Correct before proceeding.

- Reinstall the front disc brake hub and rotor.

- Verify wheel end play is within allowable limits. Correct as necessary.

- Measure the air gap between the speed sensor and tone ring teeth. Repeat in at least two more wheel positions to ensure that gap does not vary as the wheel is turned.

NOTE: Feeler gauges can be mounted to a welding rod and inserted between the vanes of the front disc brake hub and rotor to measure air gap precisely.

- Is the gap consistent and less than 1.78mm (0.070 inch)?

YES -- Go to MM5 to recheck speed sensor output. MM5 Recheck Front Right Sensor Output

NO -- Gap is greater than 1.78mm (0.070 inch). Air gap is too large. Go to MM4 to resolve large air gap concern. MM4 Check Speed Sensor/Tone Ring Air Gap

NO -- Gap is not consistent. Repeat MM6. Do not leave this step until a consistent air gap is obtained.