Wednesday, August 31, 2011

Brakes: need care

Brakes modern cars have lately become very, very diverse. When a disc front brake was considered to have bid for success, now the engine power from year to year increase, and to effectively slow down, disc brakes have a place and back. Diameter disk is constantly growing, changing design slides and the number of pistons acting on the brake pads. Materials mechanisms themselves are changing too. Now it is no surprise ceramic brake pads or Kevlar-Carbon. In this article I would like to share the experience of repair and preventive maintenance of brake systems of modern cars. Load boards and a performance test me, unfortunately, were not available, but work with many clients has helped make more or less objective picture. One of the most common complaints: "the brakes squeak." This happens for different reasons, but I would like to highlight three of them major. And not the fact that annoying whistling during braking will occur in only one of them, it is possible that several of them. The first reason: it is very hard or forged pads. Hard (relatively) blocks, as a rule, produce a very well-known manufacturers. Interestingly enough, often the price for them may exceed the original. They are meant active drivers. Nothing bad about them I can not say, but note that, referring to this version, you need to check all the brake system on the performance, or squeak can not be avoided. Another shortcoming of "hard" pads - accelerated wear of brake discs. Moving in the main city, to put such advice is not to anything. Such an option is necessary for those who just a few minutes a dozen times wants ottormozitsya with speed of 150-200 km / h. In this case, these blocks do not "float", braking performance will not change much, but if you need it? According to my own statistics, really like shoes need 3-5% of motorists. True, the service life of brake systems for such "riders" extremely low, as the life of the car. Trademarks "hard pads" are all familiar with: Nisshinbo, ATE, Brembo, etc. Very close attention to recommend looking at the packaging, though not always help. Forgeries flooded the market, and because the brakes - it's such a thing is not to be trifled with. Unfortunately, now is producing a "leftist" such a level that distinguish it from the original are not able to even the eye of a professional. The differences appear later, when after a series of even very active braking car just "float" disgusting and uneven slowing. I remember talking to an old firm Moskvorechye "which is one of the official suppliers of brand Nisshinbo in Russia. Sales manager was asked a simple question: "Why do you have wholesale price is higher than anywhere else retail?" We began to compare stocks Nisshinbo, purchased from "outside", and a set from the official. The difference found only one! The plane of the "street" pads were milled, the "official" - is absolutely smooth. True, it's been a long time. I'm afraid now, "left" and manufacturers have removed the difference in appearance. So the only recommendation is - buy a good shop that values ??its reputation. Such a recommendation can be given for the remaining spare parts, even on the original. The second reason is also not less common: the lack of overlap of brake pads in the caliper, useful stuff called Shim-kit. This set condenses the block in the mechanism, not giving her the possibility of even minimal movement and vibration. Reason Three, the most common: wear of brake discs. In this case, from squeaks and whistles will not save even a "soft" block. Cause of unpleasant sounds - friction friction layer on the "step" on the disk. "It is treated" like changing the disc. However, there is another budget option - chamfering with ferodo "on the outer edge blocks normal file. But replacing the pull is still not advise it. The most attention I would like to draw it on the soft "pad". Now production technology has leaped forward, and consumer quality at a very high level. Less than 30 thousand miles, they no longer go under sane style of driving wheels almost do not freak, retard, respectively, very good. And the criticism of him, by the way, least of all. I probably would not give the consumer a controversial suggestion, but I have one guess. There is a very famous Dutch packer - the company Nipparts. If someone does not know it - the first European packer, which was to supply aftermarket parts for Japanese cars. Earlier in their branded boxes were Pads Kashiyama - a very good choice, though a few harsh. Now, open the original packaging, we can see where Allied Nippon - I think the best choice to date for the price / quality ratio (about fakes it certainly is not). Replacing brake pads on the one hand, it is simple, but requires little care. Few now change their own, preferring to pay a small amount of car service, thinking that the break had nothing. Oshibochka. Break, especially in someone else's car, there's always that. Firstly, when retraction of the piston in the caliper, as a rule, there are two mounts. Stands with one of them break - end of the anthers. Accordingly, the piston jam soon have to change the caliper assembly. This happens very often, the amount of service and cost of services play no role. Secondly, when replacing pads is very desirable to disassemble the caliper and lubricate the guides. You understand that the conditions in which working brakes - very hot and then cooled. If you do not regularly pay attention to the guides, they are sour, then start podklinivat. Pad will wear unevenly. Sometimes, disassembly / lubrication helps, and sometimes the guides can not be beat even with a hammer. In the latter case - change with pumping the brake system. Case note. It is clear that most do not want to mess around in the mud, but at least follow along servismenami. Their skill level has recently just depressing. Separately, I want to stay in the service of the handbrake. In modern cars with rear disc brakes use two schemes. One has a little bit old, but still present. This is the rear disc caliper with screw-piston. To replace the pads, maintenance and adjustment of the handbrake is likely to need a special key, and certain skills. The second scheme is used in recent years in almost all cars with rear disc brakes. Behind are two types of blocks - normal disc and drum for the handbrake. Drum placed on the inside of the hub brake disc, which acts as a drum. To service the handbrake will remove the rear caliper and disc. Do not think that modern foreign car demands to itself some special attention. No, just routine maintenance must be carried out promptly and thoroughly. Whole-and business-like.

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