Friday, 30 November 2018

HOW TO DIAGNOSE AND REPAIR PROBLEMS WITH BRAKES



There are many problems that can arise in the case of a braking system in a vehicle. Regardless of whether there are loud brakes, longer stops or trembling of the steering wheel or the vehicle body during deceleration, all indicate that the braking system needs attention. Fortunately, some of these inspections and repairs are something that you can do yourself, with little help from this article!
There is nothing worse than driving on the street with a car that makes loud, squeaking or crashing sounds every time you brake to slow down. It almost makes you want to hide and hide!

Possible reasons

There are many reasons why brakes can cause this noise,
especially if you have not recently replaced the brakes.
Both disc brakes and older style drum brakes can cause these noises, and the most common reason is the accumulation of brake dust.
This collection can sit on the surface of the brake pads, and also block the cooling channels, which causes creaking during deceleration.
Regarding the drum brakes, if the drums are not cleaned regularly, the accumulation of dust affects the operation of the brakes and also causes squeaking.

 CLEANING THE BRAKE DIY

If you are confident enough in your skills, you can carry out the cleaning process yourself.
Required tools:

·         Floor stands for lifts 
·         Rattle and socket set
·         Cleaners for brakes and rags
·         Wire hangers
·         Brake lubrication grease
·         Screwdriver with flat blade
·         Abrasive paper and wire brush
·         Brake grease (available in automotive parts stores)
·         Hammer

BRAKE PADS

Step 1
Check where the noise is coming from, whether from the front or rear of the vehicle. If there is another person in front of the car and when you are about to leave, switch on the brakes. You may have to drive past in both directions to narrow down the noise.


Step 2
After isolating the noise area, park the vehicle on a flat, level surface. Loosen the wheel nuts slightly and lift the front or rear of the car with a jack, and after lifting the vehicle, place the jack under the vehicle. Never work on a vehicle that is only operated by a jack, as it may fall and cause serious injury or death. Completely remove the wheels and check the brakes. If the thickness of the washer is OK and there is no damage to the brake disc, the main cause of the noise will be brake dust.

Step 3
Remove the brake pads from the vehicle by loosening the bottom slider bolt using the appropriate tools and remove the clip housing from the vehicle. Hold the clamp with a piece of wire to attach it to the suspension element and move it aside. Using a flat screwdriver, remove the brake pads from the caliper bracket and check them for uneven wear and the accumulation of brake dust.

Step 4
Uneven wear
If the brake pads are worn out unevenly, they should be replaced and the clamp checked.

Even wear
If the brake pads are worn out evenly, wipe the face and edges of the brake pads with sandpaper to remove any sharp edges and clean the brake pads with a brake cleaner. Set them aside and let them dry.

Step 5
While the brake pads dry up, check the brake disc for damage. If the rotor has a slightly blue color, has small cracks or has an uneven surface, replace the blocks. We will discuss this further in the article. If the discs are in good condition, apply a small amount of brake grease to the top and bottom of the brake pads and attach them to the caliper bracket. Slide the clamp housing back onto the brake pads and secure the clamp bolt. Perform on the other side and mount the wheels.

Step 6
Test the vehicle on a quiet street to confirm that the noise has already passed.

BRAKE LEVER

Step 1
If your vehicle is equipped with brake drums, the process is very similar. After lifting the car and removing the wheels, the next step is to remove the brake drums from the car. Use a hammer to gently hit the surface of the brake drum, taking care not to hit the wheel studs. This will loosen corrosion with the drums on. When you hit the drums, you may notice brake dust from the drums, be careful not to inhale this dust, as it may be harmful to your health. When the drum is loose, simply pull it out and empty the dust into a suitable container.

 Step 2
Using a brake cleaner, wipe the inside of the drum and run the sanding paper around the inside of the drum until it is smooth. As a result, the lining will have a fresh running surface. Use a brake cleaner and rag to clean the surfaces of the brake linings and other components and allow it to dry.

 Step 3
It is also possible to adjust the brake linings with the drums removed. Simply use a screwdriver with flat blades and adjust the small circle in the middle of the cladding. It will look like a small circle with teeth and clicks when it is adjusted. It should only turn in one direction. Adjust in small increments and re-install the drum to make sure it has not been set too much. When you feel the gentle resistance of the drum, the system will be properly set. Do it on both sides of the vehicle, mount the wheels and test the vehicle on a quiet street to confirm that the noise has already passed.

STEERING - REPLACEMENT OF BRAKE

If you notice a steering wheel tremor when releasing from higher speeds, it is more likely that the brake discs are slightly warped and the brake pads wear out unevenly. This will require replacing the brake discs and brake pads and checking the brake calipers. This also applies if the movement of the brake pedal has increased. Thanks to the brakes, the purchase of high quality products will ensure that the braking performance of your vehicle will remain unchanged and provide the highest level of safety for you, your family and other drivers.

Step 1
After buying new brake components, it's time to fit them! Follow the above procedure to lift the car, remove the wheels and brake components.

Step 2
Remove the brake caliper bracket and place it on its side. Then remove the brake disc. This removal process can be the same as removing the brake drums by slightly hitting the edges of the brake disc with hammer to loosen corrosion. There may also be a set screw that must be removed before the plate falls off.

Step 3
After removal, use sandpaper and a wire brush to remove corrosion from the hub assembly, and then install the new plate. Clean the disc face with a brake cleaner to remove any corrosion material and, if necessary, install a set screw.

Step 4
Mount the caliper bracket and slide, the new brake pads into the bracket, making sure that the brake fluid is on the top and bottom of the blocks to allow them to slide freely in the clamp.

Step 5
The next step is to push the brake piston back into the clamp. You can buy a special brake press or simply use one of the old brake pads on the surface of the piston and push it away with a G-clamp or a large set of universal handles. Be careful not to crush or tear the shoe with the dust that surrounds the piston, as this may allow contaminants to penetrate into the brake fluid.

Step 6
Once the piston is back in the caliper, remove the caliper slides - these will come out of the caliper bracket - and make sure they move freely and that the grease is not contaminated. If this is the case, simply wipe off the used grease with a cloth and apply new grease.

Step 7
Replace the caliper housing on the bracket, making sure to tighten the bolt with the correct tightening. Perform the same process on the other side of the vehicle. When finished, put the wheels back on the car and lower yourself to the ground.

LITER IN

This is the most important part of the installation process, whether you have just cleaned your brakes or installed new brake pads and rotors. Braking systems require so-called "bedding", which transfers some of the new friction material from the brake pads to the new brake discs.
Without this step, the braking system will not work properly and will result in increased stopping distances and crunching of the brakes - which made replacing the brakes necessary!

Step 1
For bedding, find a quiet street with little or no traffic. With no one behind you, accelerate to 40 km / h and firmly apply the brakes so that the vehicle stops almost completely. Do this 5 to 10 times, leaving 30 seconds between stops to allow the brakes to cool sufficiently to avoid overheating.

2nd step
Then, increase the speed to 60 km / h and repeat the process. This will ensure the proper functioning of the braking system. When this is complete, park the vehicle on a level surface but do not apply the parking brake. As the brakes are hot, using the parking brake will cause an uneven point on the brake disc, which will cause a further chill on the track. By following these instructions, you will be able to diagnose and possibly repair your braking system problems, but if it seems a bit overwhelming or if you are worried about not finishing the work, it is better to use the services of a technician or a professional.

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