For the technician, it can be frustrating. The wheel speed sensors are some of the longest circuits in the vehicle.
Andrew Markel shows how using vehicle information such as the VIN and trim level can help you zero in on the right hub unit. Sponsored by BCA Bearings.
Newly released hubs target high-mileage older model cars, crossovers, SUVs and trucks.
Created by certified technicians and Timken engineers, the Timken Tech Series focuses on light and commercial vehicle product training.
If a customer complains of a clicking noise after a hub unit has been replaced, two OEMs have each prepared their own solution to the problem, and they happen to be nearly identical. Sponsored by BCA Bearings.
When engineers came up with the idea of putting the wheel speed sensor (WSS) and tone ring inside a sealed wheel bearing hub assembly, it seemed like a great idea. The sealed environment would help protect the sensor and make it less vulnerable to damage or contamination from the outside.
When a driver hits a pothole or curb hard enough, extreme forces are put onto the balls or rollers and races of the bearing. This can result in the formation of a very small mark on the surfaces. The driver might go 1,000 miles or more before these components start making noise.
On the hubs for 2005-2014 Subaru Legacy and Outback applications, a speed sensor mounts into the knuckle. It’s exposed end extends out behind the bearing to capture pulses from an encoder ring on the back of the bearing.