Replacing the brake pads yourself is a much cheaper method than having to take it to a repair shop, which will usually charge a high fee for its services. Only with the cost of purchasing goods, you can make your car's brake system good again by following these few steps.
Step
Part 1 of 3: Unlocking the Brake Canvas
Step 1. Get the correct brake pads
Brake pads can be purchased at an auto parts store near you. Tell the make, model, and year of your car, and you just have to choose which one is the right price for you. Usually, the more expensive it is, the longer it will last.
Some types of brake pads will cost more, which is aimed at a competitive market that requires even better braking. You may not need these as they will wear out your brake drums more quickly. Also, cheaper brake pads will be noisier than "branded" ones
Step 2. Make sure your car is cold
If you are new to driving, you will be dealing with very hot brake components, calipers and rotors. Make sure these components are safe to touch before you proceed.
Step 3. Loosen the wheel bolts
Using a wheel wrench, loosen the wheel bolts about two-thirds of the way.
Don't remove the wheels all at once. Usually you will replace two front brake pads and two rear brake pads, depending on the condition and how worn the brake pads are. So start the front or back first
Step 4. Carefully jack up your car until the wheels can be removed easily
Check the manual to make sure the jack is in the correct position. Place blocks behind and in front of the other wheel to prevent the car from moving forward or backward.
Place a jackstand or block under the car chassis. Don't just use the jack to hold the car. Repeat the same process on the other side of the wheel until both sides are firmly and securely held
Step 5. Remove the wheel
Complete the removal of the wheel bolts completely when the car is raised. Pull the wheel towards you to release it.
If the alloy wheels are made of aluminum on the bolt holders, you must clean the wheel bolts, bolt holes, rotor surfaces, and the rear of the wheel with a wire brush and apply anti-rust lubricant before reinstalling the wheels
Step 6. Unscrew the caliper nut using a suitable socket wrench or wrench
The calipers are attached to the brake rotor like clamps, the job of which is to slow down the rotation of the wheel before the brake pads start working, by using hydraulic pressure to create friction in the rotor. Calipers are usually one or two pieces, reinforced with two to four bolts inside the axle housing, to which the wheels hold. Spray these bolts with WD 40 or PB penetrant for easy removal.
- Check caliper pressure. The calipers should be able to move back and forth a little. If not, it means that the caliper is under pressure and could jump when you unscrew the bolt. Be careful when checking it, and don't be in a place where you could be hit by a throw if it comes off.
- Check to see if any washers or reinforcement are installed between the caliper mounting bolts and their surface. If there is, you open it and save it for later installation. You will need to install calipers without brake pads to measure the distance between the surfaces in order to replace them properly.
- Many Japanese cars use two-piece sliding calipers which only require the opening of two bolts facing outward, measuring 12-14 mm. You don't need to open the whole caliper.
Step 7. Carefully hang the caliper using a small wire
The caliper will still be connected to the brake hose, so secure it with a small wire or scrap metal so that the caliper doesn't hang and overload the hose.
Part 2 of 3: Replacing the Brake Canvas
Step 1. Remove the old canvas
Finally! Pay attention to how the canvas is attached. It will take a bit of force to remove it, so be careful not to damage the calipers when opening it.
Inspect the brake rotor for warping, heat damage, or cracks in its surface, and replace it if necessary. It is recommended that the brake rotor be replaced or resurfaced when the brake pad is replaced
Step 2. Install the new brake pads
At this time, you can spray anti-rust agent on the metal contact points on the back of the brake pad. This will reduce the squeaking sound. But don't let the liquid get on the inside of the brake pads. This will make it slippery and the brake pads can't stop the wheels from turning. Install the new canvas exactly in the same position as the old canvas.
Step 3. Check brake fluid
Check the amount of your brake fluid and add if necessary. Close the lid again when you're done.
Step 4. Reinstall the calipers
Gently slide the caliper back on the rotor, so it doesn't damage anything. Install and re-tighten the caliper.
Step 5. Reinstall the wheel
Put the wheel back in and tighten the nuts before lowering the car back down.
Step 6. Tighten the lug nuts
When the car is back on the ground, fasten the wheels in a star-like pattern. Tighten one bolt, and then the bolt opposite, until finally all the bolts are tightened.
Check the manual to determine how tight the bolts should be. This will keep the nut firmly in place without being too tight
Step 7. Start the engine, Make sure the engine is in neutral or parked, depress the brake pedal 15-20 times to make sure the brake pads are installed properly
Step 8. Test your new brake pads
Walk at 5 km/h in a quiet residential complex, brake normally. If the car can stop normally, try again and increase the speed to 10 km/h. Repeat several times and increase the speed gradually to 35 - 40 km/h. Also check when braking while walking backwards. This brake test will ensure there are no problems with your brake system, give you a sense of security and ensure the brake pads sit firmly in place.
Listen for strange noises. The new brake pads may squeak a bit, but if you hear a sound like metal shifting, you may have installed the brake pads upside down. this should be fixed soon
Part 3 of 3: Throwing the Brake Wind
Step 1. Unscrew the brake fluid main tube
The brake fluid will be contaminated with dirt from the air and brake mechanism. It will also absorb moisture from the air, which will lower its boiling point. You need to bleed the brake air before replacing the brake pads, but you must first fill the oil reservoir to the brim. Leave the lid open.
The reason why you have to add brake fluid is that when you blow brake air, there is still brake oil left in the line, so we need to supply brake oil to the brake master
Step 2. Determine the order of exhaust
Generally you need to do this in the brake position farthest from the brake master, so you will need to re-read your manual. All cars may be in different order. If you don't have a manual, ask a repair shop.
Step 3. Attach a small plastic hose to the exhaust valve
You can use aquarium hose for this. Place the other end of the hose into the small tray to catch the oil escaping. To prevent wind from re-entering the system, you should hang the bottle over the calipers and keep gravity on your side.
Step 4. Ask your assistant to pump the brakes
With the engine off, have your friends pump the brake pedal until they feel resistance. At this time, he should inform you of the resistance, at this time you need to loosen the exhaust hole a little, and ask your friend to hold the brake pedal.
- The brake fluid will flow through the hose to the reservoir. re-tighten the drain hole when your friend's feet have touched the bottom of the car.
- Repeat this process until you don't see any air bubbles in the hose.
Step 5. Check again for air bubbles
If pressing the brake pedal makes the water churn in the brake master, then there are still air bubbles there. Repeat this exhaust process before you proceed.
Tips
- If you service the rear brake, be careful with the handbrake system, use the proper way to remove and adjust it.
- Try turning the steering wheel so that the front wheels are pointed outwards after removing the front wheels. This will make it easier for you to work on the front brake calipers. But make sure you support the car with a jack stand.
- Check the rotors if they are shiny or uneven. This symptom causes the brakes to vibrate. if this happens, the rotor can be turned as long as the thickness is sufficient.
Warning
- Do not let the lubricant touch the brake pads. If this happens, the brakes cannot stop the wheels turning and are useless.
- Always use a jackstand to support the car and always support the car so it doesn't roll.
- Do not remove the brake hose from the caliper as this will cause air to enter the hose and make things worse.
