Bill Williams, Author at Brake & Front End
Tech Feature: Solving Brake Pedal Pulsation Complaints

Reoccurring pulsation complaints are perhaps the second most common reason a customer returns after having brake service. The brakes operate normally for the first 3,000 to 6,000 miles, but then the customer notices a high-speed pulsation when getting off the exit ramp on his way to work one morning. The customer returns to the shop with the pulsation complaint and leaves with usually one of two “fixes” – the rotors being machined or replaced. The usual explanation given the customer is that the rotors “warped.”

Advanced Brake Diagnostic Tools

Brake technicians are only as good as the tools they use. I have lived by this statement for a long time and it only makes sense, right? Well, what if I say the most important tool a brake technician has is his mind. The mind is a powerful tool when equipped with the right information,

Bleeding ABS Systems

Occasionally, there will be a need to replace an ABS modulator or other hydraulic component, such as a pump/motor or even a master cylinder, on some systems. When this need arises, it will be essential you are prepared for the task. This article provides an overview of some of the techniques, tools and procedures required

Diagnosis of Faulty ABS Systems

ABS diagnosis typically starts with accessing the associated DTCs and then applying the appropriate flowchart. There will be times when this type of approach will not be possible, or the occasions when it doesn’t yield positive results. When this is the case, it is always helpful to have an understanding of how the systems and

Bleed and Flush Pointers

As we all know, a bleed and flush is really two separate processes that many times overlap on the same job. Bleeding the system is done to remove all air from the hydraulic system, while flushing is performed to replace the fluid. More and more shops are performing a variety of fluid flush services as

Hydro-Boost Power Assist Systems: Operation Diagnosis and Repair

The hydro-boost uses the hydraulic pressure from the power steering system to provide the driver assist in applying the brakes.