Brake pads are a part of the braking system. In many ways they determine how quickly the vehicle will stop. When the pedal is pressed, the shoe is pressed against the disc, which leads to the vehicle braking.
Types of brake pads
The construction of brake pads
The basis of the part is a metal plate with fixed friction lining on it. Pads repeat the form of a brake disc or drum. A pad is attached to the base by means of rivets and special adhesive. Many pads have wear sensor.
Tips for operating the brake pads
The service life of the brake pads depends on driving style and mileage. Sudden acceleration and deceleration wear the part out faster. On the average, its lifespan is 15 000–20 000 km. It is not recommended to exploit pads if lining thickness is reduced to 2-3 mm, since there is a risk of damage to the brake disc and the brake fluid boiling.
Malfunctions of brake pads
Symptoms of brake pads failure
Causes of brake pads malfunctions
Repair and replacement of brake pads
Repairing and restoring the pads is not recommended. In case of malfunction they should be replaced, especially because their cost is relatively low. Replacement parts will extend the life of the brake disc and the entire brake system. You can replace a pad by yourself with a minimal set of tools. To do this, follow these steps:
Brake System auto parts: Wheel speed sensor Master-Sport Automobiltechnik (MS) GmbH
Many cars have ABS (antilock braking system) that prevents locking of wheels when braking. Due to this system even when full braking on the slippery road, the car remains controllable. ABS system is especially useful on wet roads. Problems can occur when braking on a soft or loose ground, because in such cases ABS reduces braking efficiency. Therefore there is possibility to disable ABS. A special ABS sensor is required for ABS system operating. It records the rotation of wheels. These data are necessary for the timely prevention of wheel lock.
ABS sensor is a wheel speed sensor that works with high accuracy. In older vehicles primarily are used passive inductive sensors. Modern cars are equipped with active sensors. In many cars on the wheel hub is mounted a simple gear ring. The sensor is placed above its end face. ABS sensor is usually mounted on the rear axle. When buying, make sure that you have chosen the right model. In the course of time a lot of manufacturers have many times improved their ABS.
For a layman it is quite difficult to determine whether the ABS sensor is defective. The reason that ABS is not working properly can be any other component. Workers of service station will quickly determine whether it is necessary to install a new sensor ABS. It is not difficult to install the sensor’s toothed disk. In our online shop you will find many car parts of the highest quality, such as starter, brake disks, electric window lifters, fenders, bearings and shock absorbers. It is very easy to order goods in the Internet and it is the cheapest variant. Therefore, you should visit our online shop.
Malfunctions of ABS (ESP) sensors
Signs of ABS (ESP) sensors malfunctions
Causes of ABS (ESP) sensors malfunctions
To check, if ABS (ESP) sensors work correctly, an oscilloscope and a multimeter are required. Resistance between sensors contacts must be within 1-1,5 kOm. If the reading exceeds admissible values, you are required to check fuses and wiring. Software is also requires thorough diagnostics, because electronic malfunctions can cause mechanical faults.
For checking you can replace sensors with ones which are 100% correct. If the tested sensors work with faults, than you should also check systems connected with the sensors. If non-original components are used, than insufficient contacts connection can cause malfunctions.
While doing output test, check proper functionality of braking mechanisms. To define if TCS (traction control system) and ABS (anti-lock braking system) systems work efficiently, you will need a specialized bench.
Repair and replacement of ABS (ESP) sensors
Before repairing, you should find out the source of damages. For this, complete examination is needed. In case if microcircuits of components are damaged, they can be restored. Though, such services are seldom offered even at big service stations.
If a vehicle is suddenly stopped at a speed higher than 100 km/h, than sensors settings can fail because of heavy overload. In such cases, the parts should be adjusted and checked. It is recommended to replace damaged parts exclusively at service stations.
Brake System auto parts: Brake shoe set Master-Sport Automobiltechnik (MS) GmbH
Brake shoes refer to the drum brake. Wheels brake in the drum brake, meanwhile brake shoes press the rotating cylinder. Due to the mechanical friction, braking effect is achieved. In cars the parking brake can be the drum brake. It is independent of the operating brake and serves mainly to provide car standing. If the hand brake is on, brake shoes prevent vehicle rolling. Due to this it is possible to stop the car on the inclined surface.
Sooner or later brake shoes wear out. Still, they are not highly subject to tension and serve for a long time. If the parking brake is not effective, the reason is worn-out brake shoes. Braking can be precisely measured on the brake test rig. It is easy to replace the shoes on the platform lift. Moreover, often it is necessary to dismantle wheel bearings. So, it is better to entrust this work to the repair shop. Brake shoes should be replaced endwise. Usually, it is sufficient to install the parking brake on rear axle only.
Also it is possible to repair brake shoes in rear car. Sometimes it is rather difficult to find an appropriate car part for rear cars, as they are very expensive. In popular car models it is better to install a new car part. Do you need to repair something else? Then we can help you to find cheap, but quality car parts. In our online shop you will find interior blower, catalytic converter, boot lid, condenser, dumper strut, window lifter and other car parts you need.
To diagnose drum brake shoes, lift the vehicle with a jack and remove the wheel. Then lower the parking brake lever, and remove the brake drum. The degree of shoes wear is determined by the thickness of the brake linings. Measure it without taking into account the metal base, using a vernier caliper or a ruler. The lowest allowable value is approximately 1.5 mm. The exact figure is available from the manufacturer's manual.
If you do not have experience or necessary tools for dismantling drum brakes, contact a service station to have the components diagnosed. Brake shoes should be diagnosed after every 20,000 to 30,000 km of mileage.
You may notice that the drum brake shoes kit requires diagnostics by the following criteria:
In the process of operation, drum brake shoes are subjected to heavy loads. The reason of the premature wear is oiling of the linings.
The service life of the components varies between 100,000 and 150,000 km, and partly depends on the driving style and driving conditions. Aggressive driving, abrupt and frequent braking on wet roads, and poor road surface reduce the service life of the components.
An important factor is also the quality of the material the components are made of. Poor quality shoes wear and get damaged much faster.
Brake shoes are consumable elements of the mechanism, so they are not subject to repair and restoration. The components are to be replaced simultaneously on the same axle. The algorithm is as follows:
If, while replacing the brake shoes, you find any deformation or wear of the brake drums, the latter should also be replaced.
Brake disc is a component of the braking system, which is responsible for slowing and stopping a vehicle. Due to continuous thermal influence brake disc is made of durable material.
Types of brake discs
By type of material used:
By the presence of ventilation:
By type of perforation:
Tips for operation of the brake disc
The service life of the brake disc depends on the material from which they are made, and driving patterns. Often, it is necessary to replace brake discs every second pad replacement, that is 30-40 thousand kilometers. Exact recommendation for disc replacement frequency is specified in the technical specifications of the vehicle.
Malfunctions of the brake disc
Symptoms of the brake disc failure
Causes of the brake disc malfunctions
Repair of brake discs
At the first sign of failure, measure the thickness of the disc with a caliper. The deviation from the original values can be of 1-3 mm.
Extended life of the brake disc can be achieved by grinding. Special equipment removes the small cracks and burrs, levels the entire circumference of the thickness of parts. It must be remembered that this is a temporary measure, you still have to replace the discs.
Replacement of brake discs
Installing new parts is easy. This can be done by yourself. To replace the disc, you need:
Brake System auto parts: Brake Drum Master-Sport Automobiltechnik (MS) GmbH
Brake drum is a part of brake system that plays an important role in braking. Braking effect is achieved by converting kinetic energy into heat that is absorbed by the brake drum. This is a simple mechanical process. But there are special material strength requirements, which the brake drum is made of, as it is subjected to strong mechanical stresses. In brake drum friction pads are located inside the drum, while in the brake shoes or clamping bands friction surfaces are outside.
Excessive heating that occurs during braking, requires the use of special alloys with a high wear resistance. However, wear occurs. So each time you change tyres, inspect the brake drum for obvious signs of wear. It can be deformed, for example. If you find defects or signs of corrosion on the surface of the drum, screening is necessary. Manufacturers specify the maximum diameter of the brake drum. These values should be guided when estimating wear. In addition, brake drum can be damaged in the result of an accident.
Worn brake drum or drum with a clear defect should be replaced immediately, because the risk of brake failure is too great. Brake drum replacement should be done in the auto repair shop. Brake system repair is related to car safety and even the slightest error can have serious consequences. So do not do this by yourself and trust professionals. In our online shop you will find rear view mirrors, mufflers, spoilers and fenders. You will be able to install them without any assistance if you have mechanical skills. Our Internet shop guarantees the best quality and reasonable prices.
Brake Drum failure
Signs of brake drum failure
Causes of brake drum failure
The experts will perform diagnostics of the entire braking system at the service station. It is examined at the special repair bench where the resistance of each of the wheels when braking will be estimated. We remind that the maximum indicator of the drum diameter shouldn’t exceed 204,4 mm. Higher rate testifies that the component should be replaced. We will note that you will be able to diagnose the system yourself. So, accelerate the car to 70 kilometers per hour, be sure the road surface is flat and dry. Then press the brake pedal sharply. If the car starts skidding or if you feel the pedal or steering wheel vibrations, hear extraneous sounds, you need to inspect the braking system at the service station urgently. Inspect the system in such way every 20000 operational kilometers, and do the cleaning and preventive maintenance of the unit every 10000 operational kilometers.
Brake Drum repair
Perform the machining of the drum in order to remove surface shears that increase braking path and make the car vibrating. Also it should be taken into account that repair work will be much cheaper than brake drums replacement. The serviceman removes the top layer by the lathe thus restoring initial condition of the part.
Brake drum replacement
If you found brake drum failures that you cannot eliminate, replace the component. It will be reasonable to replace the part at service station where high-precision calibration of the braking system can also be performed.
BRAKE DISCS AND PADS KIT
A braking system comprises several components designed to ensure a controlled stop of a vehicle at a particular moment. It is also used to prevent the car from rolling when the driver needs to ...
A braking system comprises several components designed to ensure a controlled stop of a vehicle at a particular moment. It is also used to prevent the car from rolling when the driver needs to park it on a slope.
Brake system design
There are several types of brake systems. Nowadays, the most widespread layout is a hydraulic system with disc brakes. Its key elements are the following:
In drum brakes, brake shoes together with the wheel brake cylinder are installed inside the drum. When the pedal is engaged, the brake fluid pressure pushes out the pistons of the wheel cylinder. They overcome the resistance created by return springs and press the brake shoes against the internal surface of the drum.
Parking brake systems are fitted with a cable instead of a hydraulic actuator.
Symptoms of malfunction
When the brake fluid level warning light comes on, this usually means that some brake system components are leaking. In that case, you may notice yellow, amber, pink, grey, blue, or purple puddles under the vehicle after it’s been parked for a while, usually around the wheels. The car may pull to one side, which is often a sign of a jammed calliper. Similar symptoms appear when oil gets onto the pads, while increased pedal travel or low pedal resistance usually indicate that there’s air in the system.
Causes of malfunction
Most often, these problems appear when the driver neglects to replace brake system components on time. For example, a jammed calliper may cause uneven pad wear and deterioration of the brake disc. Old seals and hoses lose their elasticity and crack, causing the system to start leaking. Worn-out guide pin boots often lead to dirt and moisture getting on contacting parts, resulting in corrosion and jamming. Aggressive driving may lead to disc deformation.