A:　　What is a brake? A brake is what we refer to as a brake. Of course, the application of a brake is very extensive, and it is commonly used in movable mechanical equipment. There are many types of brakes, one of which is a disc brake.　　People who have applied disc brakes may encounter noise from disc brakes. What should they do?　　If there is a "squeak, squeak" noise when braking with a disc brake, the following methods can be used to eliminate it:　　1. Add an anti noise plate between the brake caliper piston and the brake lining to create an inclination on the piston. Then ensure that the brake pads and brake discs have a flexible touch during braking, so that the brake pads do not produce abnormal noise under normal wear conditions.　　2. Select brake pad materials with softer and lower density for the brake.　　3. When braking with a disc brake, the brake pads move to one side, creating a collision motion. This is caused by the large gap between the brake pad and the caliper body, which can be eliminated by plating solder. However, it should be noted that the solder plating should be placed on the opposite side of the direction of travel to avoid failure under the effect of braking force.　　After reading the relevant introduction above, have you come up with appropriate measures to deal with the noise of disc brakes?

A:　　At first glance, the term 'brake' may seem unfamiliar to many people. In fact, brakes are very simple, and they are what we usually refer to as brakes. Do you understand this statement?　　There are many types of brakes, including hydraulic brakes, block brakes, disc brakes, and many more.　　So who knows what the main faults of disc brakes are?　　The pressure on the barometer rises slowly. Main reasons:　　(a) Pipeline leakage;　　(b) The air pump is not working properly;　　(c) The one-way valve is corroded and stuck;　　(d) The oil drain bolt of the oil-water separator is not tightly closed or the pressure regulating valve is leaking air. Methods for cleaning up problems; Firstly, the pipeline should be cleaned of any air leaks, and then the operation status of the air pump should be checked. Remove the exhaust pipe of the air pump and press the outlet tightly with your thumb. If the exhaust pressure is low, it indicates that there is a problem with the air pump. If the air pump is in excellent working condition, check the oil drain plug or pressure regulating valve of the oil-water separator to prevent bypass, and clean up the problem after inspection. Finally, check the two one-way valves in the three-way connector again. If the one-way valves are stuck, it will cause the air storage cylinder to be unable to intake or intake slowly.　　(2) Lack of braking force and weakness. Main reasons:　　(a) Brake oil leakage;　　(b) There is air in the brake oil circuit;　　(c) The wheel hub oil seal is damaged, and there is oil stains on the clamp disc;　　(d) Severe brake wear and tear, with burnt conflict surfaces;　　(e) The air pressure adjustment in the pneumatic circuit is too low. The above problems can be repaired, adjusted, or replaced with parts according to their respective causes before cleaning.　　(3) Run off track after braking. The direct cause of deviation is the unequal braking torque between the two wheels. Common causes of the problem include:　　(a) The oil stains on the brake caliper disc are severe, and the coefficient of the conflict body is severely reduced, resulting in an unbalanced braking torque. At this moment, the oil stains on the brake caliper disc should be removed;　　(b) The cylinder piston is stuck and cannot operate. Press the brake pedal while still, investigate the condition of the cylinder operation, and disassemble and inspect as necessary.　　(4) Brake card issuing. Symptoms of the problem: The loader has difficulty starting and walking, and after parking, touching the clamp plate with your hand causes it to heat up. Main reasons:　　(a) After parking the conflict film, touch the clamp plate with your hand, and the clamp plate will heat up. Main reasons:　　(b) The wear and tear of the conflict plate has become thinner, the dust ring is damaged and water has entered, and the piston is corroded and stuck;　　(c) The reset tension spring in the booster pump is weak or broken, and high-pressure oil cannot flow.　　(5) The booster pump sprays brake fluid. Symptoms of the problem: When applying the brake, oil mist sprays out. Reason for the outbreak:　　(a) The brake light switch is damaged, and high-pressure oil is spraying out from the switch interface. Replacing the switch can solve the problem.　　(b) The piston rod length of the booster pump is too long. This situation can occur when replacing the booster pump assembly. The reason is that the piston rod adjustment is too long, resulting in excessive piston stroke during booster pump operation. Brake fluid flows back into the booster pump from the drain hole and sprays out. During installation, the piston stroke should be measured to determine the length of the piston rod.　　Common problems with disc brakes during use include air resistance, lack of braking force, and noise during braking. Air resistance　　The heating part of the disc brake is concentrated on a very narrow brake pad, and its unit pressure is higher than that of the drum brake. The brake pad and the piston of the caliper body directly touch each other, so the heat during braking is easily transferred to the brake fluid. In this way, the disc brake can easily experience air resistance. However, if corresponding measures are adopted, the occurrence of air resistance symptoms can also be prevented.　　1. Prevent the boiling point of brake fluid from decreasing