Raybestos Best Brake Job: Inspecting Brake Assembly
Raybestos Best Brake Job: Inspecting Brake Assembly


[Music] Now that we have the vehicle up in the air, before we pull the wheels and start looking at the brakes, you always want to take a look at the condition of the tires. A badly scalloped tire or an out-of-balance tire can cause a vibration Also, look for looseness within the wheel bearing and suspension components. Everything’s in pretty good shape here, so we’ll move on with pulling the wheels and go on. We’ve removed the wheels, and now what we want to do is a visual inspection of the brake assembly. Number one is, you want to check the brake hoses. Look for any kinds of cracks in the brake hoses and conditions of the brake lines coming down. These all look pretty good. The next thing you want to do is a visual inspection of the rotor. The surface area of the rotors… Surface area looks good, but I can see that this also has a huge rust ridge on it. We’ll check the minimum thickness for discard on this rotor. The other area you want to check is the cooling vanes in this area. Make sure they’re not packed with any kind of rust or mud. Let’s take a look at this rotor, and we’ll check the minimum thickness of the rotor. And we are well under the minimum thickness of the rotor, so this rotor is going to have to be replaced. The other tool that’s very nice is a gauge for checking pad thickness. You slide this tool in between the rotor and the pad, and you can see what kind of life you have on the pad. And by putting it down here, we can see that we have about two millimeters of brake life left. Two millimeters doesn’t leave very much. It’s going to have to be replaced. The other thing I want to point out is… This particular vehicle here, the shim has migrated off the brake pad. You can see it right here, this is actually the shim on the brake pad. And this shim has contacted the rotor hat and is starting to cut a groove in the rotor hat. If this would have continued to drive this way, eventually, this shim would have cut the rotor in half… and the braking surface would have come disengaged of the rotor hat, and you would have lost braking on this side. [Music]

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