Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Wheel Speed Sensor: Testing and Inspection

Front Wheel Sensor:

Rear Wheel Sensor:

- Check the front and rear pulser for chipped or damaged teeth.
- Measure the air gap between the wheel sensor and the pulser all the way around while rotating the hub bearing unit by hand.

Specs:
Standard Gap 0.4 - 1.0 mm (0.02 - 0.04 in)

NOTE: If the gap exceeds 1.0 mm (0.04 in), the probability is a distorted knuckle which should be replaced.