BRAKE & FRONT END, August 1952: The “Pull a Wheel!” campaign from the 1940s and 1950s played a critical role in stressing the complete inspection of brake systems. Most vehicles of this period had drum brakes. It was possible to see the thickness of friction material on the shoes through inspection holes, but it was impossible to inspect the condition of the entire shoe. Pulling a wheel on some of these applications could be labor intensive and involve adjusting the wheel bearing.
Passive types of wheel speed sensors are still used in many applications so understanding their operation is important.
As the metal tooth passed by the permanent magnet wrapped in copper wire, the magnetic field was altered and measured by a computer. This is not a sci-fi novel, but how a passive wheel speed sensor works.
A passive wheel speed sensor is often called a “variable reluctance sensor” by some engineers. The sensor is mounted at a specific gap from a toothed reluctor ring. As the teeth pass by the wheel speed sensor, it changes the magnetic field and produces alternating current or AC voltage. The AC voltage can be seen by a scope as a sine wave.
There are three things to look for when trying to determine if AI has created an image:
Where we once provided business and technical information in a monthly print magazine, we now have daily newsletters and on-call websites to help spread the message of quality service.
Here are six quotes that every shop owner should live by.
There are many ways you can help play the long game, and TechForce has free resources to help inspire and promote the profession.
Topology influences how you access the modules with your scan tool.
Load management for steering systems.
Reflashing and reprogramming is a necessary service for repairing vehicles.
Replacing rear wheel bearings on a live axle rear suspension requires a few extra steps when compared to a unitized bearing.
