No matter how good the sound insulation is, the roar from the calipers will be clearly visible. This problem is faced by many motorists. What is noteworthy, knocking occurs only on small bumps. On smooth asphalt and at high speed, there are no extraneous sounds. If you hear a characteristic ring in the front suspension, check the condition of the brake elements. Perhaps the reason is precisely thundering calipers. What to do in such a situation? See the answer to this question later in our article.
Looking for the root of the problem
So, what causes such a characteristic ringing? The reason lies in the insufficient pressure pad to the discs. As a result, a gap appears between them. On the bumps, the pads vibrate and inadvertently touch the surface of the disk.
This causes an obsessive sound. What is noteworthy, from the side of the street it looks more like a jingle. And inside you feel dull bumps. Sometimes this indicates a malfunction with shock absorbers or ball bearings. But do not rush things and sort out the suspension. Perhaps you just rattled brake calipers.
Plate
Many manufacturers install special anti-creak plates from the factory. They follow the contours of the pads and have a thickness of up to one millimeter. Many do not see the point in installing these elements. But there is an effect from them. If the spring is not able to press the pads normally, this pad partially compensates for this gap. If the callers rattle, what should I do? It is necessary to inspect the brake mechanism and check for the presence of an anti-creak plate.
Note! Even on a fully functional vehicle, a small gap should be ensured between the working surface of the disc and the friction material of the block. But it is so insignificant that the sound from the contact of parts is not reproduced. If the brake elements are pretty worn out, do not put several plates at a time. This can disrupt the
braking system, and the effect will disappoint you.
Revision of calipers
In 40 percent of cases, the front caliper rattles due to dry lubrication. Many car owners are not aware that this part needs periodic maintenance. How often do it? Experts give the answer - greasing is performed at each replacement of blocks. The resource of the latter can be from 20 to 60 thousand kilometers, depending on the location (front or rear), as well as the driving style of the driver.
How to make an audit? First you need to find a quality lubricant. It should be specialized - just for guides. Reviews do not recommend the use of grease for the hubs, as well as copper and ceramic analogues. They dry quickly and are not suitable for use in this place. A popular manufacturer of specialized lubricants for calipers is Liquid Moli. Typically, such a product is sold in vacuum bags. One is enough for two guides. Grease does not lose its properties at temperatures up to 200 degrees Celsius.
After purchasing the material, you can get to work. So, first with the help of a wheel wrench we tear off the wheel bolts. Next, install the jack and raise the body part up. We remove the wheel completely and go to the calipers themselves. On the reverse side there are two bolts "14".
We unscrew them with a head or a spanner. We also inspect the condition of the anthers. If they are damaged, a new grease will not help solve the problem. It is laid only under the condition of tight anthers of the
guides of the caliper. First clean the seat and the guide pin. Next, squeeze the grease from the bag onto the surface. Then the item is assembled in reverse order.
Note! If the piston boot is damaged, it must be urgently replaced. Otherwise, the rear calipers will rattle and the front will constantly.
The same work needs to be done on the adjacent brake mechanism. In order not to run to the store when a damaged boot is found, it is recommended to purchase a repair kit in advance (in extreme cases, it will remain “in reserve”).
Pads
If the callers rattle, what should I do? Lubrication may not help if the pads are worn out substantially. As the friction material wears out , the distance between the mating elements increases. Even a working spring cannot compensate for this gap.
What to do if the pads in the caliper rattle right after replacement?
In this case, the culprit of the problem is a too thin disk. Usually its resource is from 120 to 200 thousand kilometers. With significant development, neither grease nor additional plates will help to restore the previous clearance. There is only one way out of the situation - replacing the brake disc with a new one.
Some groove this item. But it is worth remembering that such an operation is done only if the part is sufficiently thick. In our case, this operation can also do much harm.
If the callers rattle, what should I do? In the case of installing a new disk and pads, the problem should be solved. But if it remains, you can try replacing the clamp bracket.
Also
to solve the problem is the groove of holes for repair guides. Please note - in this case, you should choose large guides. Otherwise, all the work will be done in vain.
Finally
So, we found out why the pads in the caliper rattle and in what ways this malfunction can be solved. Is it possible to ride with such a problem? It does not cause significant harm. As a rule, this only affects driving comfort.