I love being the center of attention. So I wasn’t embarrassed that people look around when I park near the house. It just didn’t turn out to be the kind of attention I was used to. Everyone did not look at the beautiful car, but turned around at the squeak of the brakes.
To solve the problem, I studied a lot of information and spent a lot of money on the service. That’s why I’m putting everything on the shelves and sharing it with you. I hope this article is helpful and saves you time and money. Where does the sound come from? We will understand the structure and operation of the braking mechanism. The brake disc is firmly attached to the wheel and rotates with it. There are pads on both sides of the disc. They are fixed in the caliper, inside and outside of the wheel. The inner part of the caliper is fixed, while the outer part moves along the guides.
When you press the brake pedal, the piston presses on the inner shoe. The moving part of the caliper moves along the guides and presses on the outer pad. This clamps the brake disc on both sides. The rotation of the disk, and with it the wheel, slows down and the car stops. Sometimes drum brakes are used on the rear axle. The linings are inside the drum and under the influence of the pistons, they spread apart and put pressure on the drum. There is a frictional force that slows down the drum along with the wheel.
The friction of the pads on the disc or drum is accompanied by vibrations. It is present all the time but not always accompanied by an unpleasant noise. We hear a creaking noise when the vibration frequency falls within the range our ears can hear. So let’s look at the reasons. The pads have not worn out yet First of all, I decided to wait until the new pads rub against the disc. This is the reason for the creaking of not only disc brakes, but also drum brakes. In my case, 700 km of running didn’t solve the problem, so the reason is different. Lack of lubrication in the mechanism Then I decided to lubricate the caliper guides and apply special grease between the piston and the pad. It didn’t solve the problem.
By the way, the piston does not press on the block itself, but on the anti-squeak plate. It not only eliminates noise, but also prevents heat transfer from the pad to the caliper. It will be useful to make sure it’s available – you never know, they forgot to include it on the service.
The saddle guides are protected by dust bags. When inspecting, make sure they are intact. Otherwise, sand and grit will collect on the guides, causing the caliper to bind. Also check the rubber seal around the piston.
When the tightness of the cylinder is broken, the brake fluid gets on the pads, and the friction lining begins to crumble.
Disc or drum wear
The next step is to contact the service. The master explained that the new pads are installed on the old plate. A groove formed on the outside of the disc because the caliper pressed unevenly on the pads – a result of insufficient lubrication of the guides.
The discs were machined, but the creaking remained. It seems that the problem was not solved, but the hours worked had to be paid. Then I decided to search the forums for answers. I’m sure I’m not the first to encounter squeaky brakes.
How I solved the problem
It turned out that the reason lies in the incompatibility of the pads and brake discs. Braking system designers only test products with their own components. By installing pads from another manufacturer on the original disc, you run the risk of encountering extraneous noise. And it doesn’t depend on the brand and cost of the pads.
After turning, the thickness of the slices was close to the minimum. So I left new pads and installed discs from the same manufacturer. The squeaking didn’t go away immediately, but after 100km of running and several brakings from high speed, the pads took some getting used to.
Neighbors don’t turn to the car anymore, but I’ll survive this. But now I have something to share with you. Instead of a conclusion, browsing the forums, I found a few more reasons for extraneous noise. Dust gets into the small grooves of the disc and makes the brakes squeal. The problem is solved by cleaning the discs with a special tool. overheating of the brakes. The vibration intensifies and an extraneous noise appears. Overheated windows warp, especially when water gets on them. If the creaking does not go away after cooling, try grinding the discs. If this doesn’t help, the only thing left is a replacement. The tone is emitted by the wear indicator. It is worth considering replacing the pads. But that doesn’t mean