Unfortunately, not all specifications are reliable. As a result, it can sometimes be tricky to get a quality job done. Because consolidated specification sources often make mistakes, it is important to make sure you find the right numbers. This article aims to help you learn how to verify rotor and drum specifications in order to complete a job. In particular, the example below will help illustrate a potential problem, and how to fix it.

The Specification Solution:

Take a close look the following chart, you’ll notice that the 1998 Skylark has different “machine to” specifications. As you can see, points “A” “B” and “C” are all different. Because of the differences, issues can occur. For instance, using the wrong specifications could result in the machining of a rotor that should have been replaced, instead of serviced.

Rotor Specification Chart

As a mechanic, you are making some pretty important decisions. When it comes to rotors and drums, you need to ensure that your numbers are accurate. For example, try to find two specifications from different sources. For the most accurate information, look to the rotor itself, information providers, and parts manufacturers.

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