How to replace rear brake pads

Instructions for replacing rear brake pads in a car

Quite often, the replacement of parts (more precisely, the frequency) directly depends on the driver’s driving style and driving style and the intensity of braking.

But there are optimal, average indicators that indicate that on domestic cars it is advisable to change the rear brakes every twenty thousand kilometers, and on modern cars (foreign cars) every thirty or even forty kilometers.

So, in addition to the generally accepted terms, there is also the concept of premature wear. This is where it is very important to prematurely notice a problem that can cost your life.

During sharp braking at speeds between 60 and 80 kilometers, a “beating” sound is observed. This directly indicates that there is a clear problem with the brake system, namely with the pads.

If it seems to you that the brake pedal is behaving in some unusual way (slow or, conversely, too sharp braking), then this is a sure sign that you need to change the pad.

If you notice that there is a noticeable presence of metal shavings on the discs from the fixing linings, and at the same time the braking process begins to be accompanied by an unpleasant grinding noise, then this means that it is time to inspect the braking system and its elements.

The wear sensor gives a signal to the driver. A soft metal sensor is built into the fractional lining, which, when worn, closes a circuit and an indicator on the instrument panel indicates this.

It is important to remember that replacing brake system elements on the same axle must be carried out simultaneously. To perform the replacement, it is not enough to have only a mechanic’s tool. This is especially true when replacing disc brakes.

You can use the services of a service station, but the price for replacing rear brake pads is quite high. The cost of one side will be about three hundred rubles.

How to replace pads on drum brakes

Before replacing the rear brake pads on drum brakes, you need to carry out diagnostics. To carry out diagnostics, you need to use a special viewing window, which is located in the brake mechanism. To do this, remove the plug and measure the thickness of the lining. If replacement is necessary, it is performed as follows:

The first thing you need to do is loosen the handbrake drive;
Next, you need to unscrew the guide pins and, turning, remove the rear brake drum. Quite often it happens that the brake drum does not give in at all. This indicates that he has become attached. In order to loosen it somehow, you need to lightly tap it with a hammer from the end;
After the rear drum has been removed, you need to work on the guide spring. It needs to be removed from engagement with the block;
Next, we disconnect the lower tension spring, and then proceed to removing the expansion bar;
To disconnect the guide spring from the rear brake shoe, it is necessary to remove the position of the hand drive lever from the cable end;
We remove the guide spring from the brake mechanism, uncotter the lever axle of our handbrake, remove the washer, axle and lever;
After completing all the steps, install the lever in a new one and pin the axle. Further installation occurs strictly in the reverse order.

How to replace pads on disc brakes

The job of installing rear brake pads on disc brakes is a very difficult process and is very different from replacing them on drum brakes.

As mentioned above, for this process you need to stock up on additional tools. In addition to screwdrivers and wrenches, you need to have pullers that are designed only for your car's system.

Let's look at the step-by-step instructions:

In the place where replacement is necessary, the car must be jacked up and the wheel removed. In order to remove the drum itself, you need to loosen the nut that secures the rear drum and unscrew it completely. Removing the drum from the hub is done by prying it off from different sides; this must be done carefully, since there is a bearing there that will need to be monitored. But, if there is a parking brake mechanism, you don’t have to remove it;
The next step is to remove the springs. It is necessary to take into account that the springs have a high force, so be careful when working. After removing the tension springs, the plastic springs of the clamps are then removed;
We put the pistons of the working cylinder in place. And actually, these are all the steps before installing or replacing the pads;
Installation occurs in the reverse order - they are fixed using special clamps.

As for the use of lubricants, before installation it is necessary to lubricate both sides of the gasket with silicone grease. Also, before installing the wheel, an anti-corrosion layer must be applied to the hub rim.

Video “Replacing rear brake pads”

Source: http://MineAvto.ru/remont/tormoznaya-sistema/zamena-zadnih-tormoznyh-kolodok-534.html

How to replace rear brake pads

Car owners can often encounter one or another problem when their beloved car has to be repaired and they have to pay a lot of money. But still, some things can be fixed on your own. For example, many people ask how to replace rear brake pads.

This is quite an important process because brake pads provide a guarantee of performance during emergencies. And you can easily replace the pads yourself, so as not to spend a lot of money, and to understand more about the structure of your car. Anyone can make a replacement, even a person who does not understand anything at all in this area.

It's easier to explain this step by step.

You need to park your car in a completely dry place, in the shade, and also convenient for using your tools. You should also not save time; it is better to do all your business first, and then take care of the car.
It is necessary to take stands and place them under the front wheels to block them so that the car does not move anywhere.
You need to tighten the handbrake one hundred percent.
Next, loosen the wheel bolts using a wheel wrench. This should be done while the car is still on the surface of the ground.
Then you need to use either the jack from the tool kit or the hydraulic version. Use it to lift the rear of the car. For greater safety, it is necessary to install car trestles in special places, and then you need to lower the car on them.
It's simple: you need to remove the wheel.
Next, remove the cover from the brake, which resembles a drum. This is necessary to gain access to internal parts.
Inspect the brake for damage. If the thickness of the pad material is less than 3 millimeters, replacement is necessary.
Using a spring remover, you need to remove the return spring. It is hard, it is not very easy to remove, as it can jump off, it is best to wear glasses.
Wear special gloves and hold the pin for fixation in the back. Install the pad remover onto a special spring bracket for fixation. Next, press down and turn the puller in a counterclockwise direction to remove the fixation device, as well as the pin.

Remove the pads and whatever they were attached to.
Before installing new pads, you need to make sure that there are no leaks located on the brake cylinder.
Rearrange the fasteners and transfer them to new pads.
It is possible to install new pads in combination with old fasteners if they are in good condition.

Next you need to install the return spring.
Then you need to adjust the brake before installing the wheels. Most wheels are self-adjusting, but adjustment is necessary at the very beginning.
Install the brake drum by placing it on the brake system.
Install the wheels, then remove the trestles and lower the vehicle completely.
Ultimately, the wheel bolts need to be tightened.

That's all, essentially nothing so complicated, you can do everything yourself.

Source: http://kak-za4em.ru/kak-zamenit-zadnie-tormoznye-kolodki/

How to change rear brake pads yourself

The driver must get used to the fact that keeping the car running requires constant replacement of certain spare parts.

One of the most frequently replaced car components is brake pads. As you can imagine, this can be easily explained.

Replacing rear brake pads is a standard procedure and does not require much time and effort. You can easily do it yourself.

So, each part of the car is characterized by a certain resource, the exhaustion of which depends on a wide variety of factors.

The main factors for the rear wheel braking mechanism are:

the climate in which the car is constantly operated;
driving style of the car owner;
the quality of the roads on which the car constantly travels;
the quality of the brake pads themselves;
the quality of the replacement that was carried out previously, if any.

In addition, the lifespan of brake pads depends on individual reasons. Because of this, experts cannot strictly regulate the replacement period for these car parts.

It is curious that wear-resistant types usually have much worse friction properties than discs that wear out quickly.

And yet, manufacturers of good cars indicate a certain parameter in their vehicle operating manuals - lining wear (thickness), which indicates the need to change the brake pads.

Attention ! If you find that the thickness of the linings on your car has already exceeded the threshold specified in the instructions, do not let it slide, do not shrug it off, after all, your health, life and the health and lives of your passengers may depend on it!

Brake pads need to be changed on one axle at a time. For such a manipulation, in addition to standard plumbing tools, you will need other devices. Especially if you need to replace the rear disc brake pads. This list can be found in the repair manual for a car of a certain make and model, as well as on various forums and websites of car enthusiasts.

Let's consider the general technology of this process for the rear brake mechanism of disc and drum type systems. Let's note right away that these technologies are completely different from each other, so don't even try to apply a disc brake swap to drum brakes.

In order to understand whether or not you need to replace the rear drum pads, it is not at all necessary to remove the drum. Diagnostics can be carried out thanks to the presence of an inspection window in the brake mechanism. To do this, remove the plug and evaluate the thickness of the lining; if it is less than normal, then we proceed to replacement.

First of all, it is necessary to loosen the handbrake drive of the parking brake system. Next, unscrew the guide pins. Now feel free to turn the brake drum, thereby removing it. There is a high probability that you will not be able to remove it immediately due to the fact that the drum is stuck, so first tap it from the end.

When the drum is already removed, remove the guide spring from its engagement with the block. Now disconnect the tension spring and remove the front block and expansion bar. After carrying out these simple manipulations, you need to disconnect the guide spring. In addition, do not forget to remove the manual drive lever from the cable end.

The video shows how to change the rear brake pads on a “nine”:

At the last stage, remove the guide spring from the brake system, unpin the parking brake lever shaft and remove the washer, shaft and lever.

Finally, move the lever to the new brake pad, pin the axle and perform the previously listed operations in reverse order.

Disc brakes

Replacing rear disc brake pads requires the use of various wrenches and screwdrivers, and special pullers that are designed for the brake system of your particular car.

Let's start by loosening the hand (parking) brake cable. Next, release its lever and knock out the adjustable pins. Now you need to remove the retaining spring.

The next step is to remove the brake pads and gaskets. Immediately before installing new pads, clean the surface of the caliper in contact with them. At the same time, also check the dirt cover. If you find mechanical damage on it, then you need to carry out a complete overhaul of the caliper.

Determine whether there is mechanical damage on the friction surface of the brake disc and measure its thickness. If it is smaller than it should be (the minimum thickness of the brake disc is indicated in the manual), then it is better to replace it immediately, so as not to carry out a similar operation again later, with the difference that you will be changing the disc itself.

In the video, the rear brake pads of Daewoo Nexia are being replaced:

Once completed, push the cylinder pistons into the cylinder and install new pads. To do this, apply a thin layer of silicone grease to both sides of the gasket and install it on the back plate of this part. Now install the pads themselves.

Before installing the wheels, apply a special anti-corrosion compound to the rim of the guide hub.

Important point! When you disassembled the brake system, you could remove the brake line from the caliper. In this case, add brake fluid to the reservoir and bleed the brakes. This is necessary in order to check that there are no brake fluid leaks and that they are working correctly. Only then adjust the system itself.

You don’t have to do this yourself; by contacting any service station, you can use this service. The cost of replacement depends on the type of brake system and the make (model) of the car. Usually it is not very high, so to speak within reason.

Masters carry out such operations quite often, so it will take them much less time than it will take you. If you are ready to pay and you really don’t want to dig into the brakes of your own car, then pay, just beware of unscrupulous “professionals”.

Source: http://365cars.ru/remont/zamena-zadnih-tormoznyih-kolodok.html

Replacing rear brake pads - how to replace and when?

Good day, dear car enthusiasts! Any sane driver should always be interested in two points: the dynamics of the car, i.e. engine parameters and characteristics, and traffic safety, i.e. condition of the car's brake system.

When should brake pads be replaced?

Replacing rear brake pads VAZ 09

You will find the answer to this question in the Owner's Manual for your car model. It is here that the parameters are indicated: at what wear (thickness) of the linings should both the rear brake pads and the front ones be replaced.

In this matter, there is no need for initiative, and, moreover, hope for “it will be patient...”. The indicated thickness of the linings is 2.0 mm, please change the pads.

Brake pads must be replaced on one axle at a time. In the future, you should follow the brake pad manufacturer's instructions, which clearly state when to change the front or rear brake pads, it doesn't matter.

Important! To replace brake pads, in addition to standard mechanic tools, you will need some tools. This is especially true when replacing pads on disc brakes. It is impossible to describe all of them, so follow the repair manual for your particular car, or the tips on the forums of your model - water (audivodov, lanosvodov, fordovodov, etc.).

Let's try to replace the rear brake pads on a drum-type and disc-type system with our own hands. We lay out the general technological process, and the nuances when disassembling and assembling rear brakes depend on their type.

Replacing rear brake pads on drum brakes

Replacing rear brake pads

Before changing the rear brake pads, we diagnose their condition without removing the drum. For this purpose, the brake mechanism has an inspection window. We remove the plug and evaluate the condition of the lining, or rather its thickness. If you decide to replace the pads, then let's get started.

you need to start by loosening the handbrake drive (parking brake system);
unscrew the guide pins and turn the brake drum and remove it. Naturally, you won’t be able to remove it with your hands (it’s stuck), so first tap the drum from the end;
after removing the drum, remove the guide spring from engagement with the block;
then, having disconnected the lower tension spring, you need to remove the front block and remove the expansion bar;
disconnect the guide spring from the rear brake shoe, remove the manual drive lever from the cable end;
Remove the guide spring from the brake mechanism. Undo the handbrake lever shaft. Remove the washer, lever and axle;
Next, we move the lever to a new brake pad and pin the axle. Further installation of the brake pads is carried out in the reverse order.

How to replace rear brake pads on disc brakes

Replacing and installing rear brake pads on disc brakes is, of course, fundamentally different from replacing pads on drum brakes. In this case, in addition to standard tools6 keys and screwdrivers, you will need special pullers designed specifically for the system of your car.

loosen the parking (hand) brake cable;
release the parking brake lever;
knock out the adjustable pins and remove the locking spring;
remove brake pads and gaskets;
clean the surface of the caliper that is in contact with the brake pad;
At the same time, we check the condition of the dirt cover; if there is mechanical damage on it, you will have to completely reassemble the caliper;
We check the friction surface of the brake disc for mechanical damage and measure the thickness of the brake disc. Before doing this, check in the manual the minimum permissible thickness of the brake disc, so that after a few days you do not have to replace the brake disc;
Next we push the brake cylinder pistons into the cylinder;
Next is installing the brake pads. Both sides of the spacer are coated with a thin layer of silicone grease and the spacer is installed on the back plate of the brake pad. We install brake pads.
Before installing the wheel, do not forget to apply an anti-corrosion compound to the rim of the guide hub.

Important! If you removed the brake pipe from the caliper when disassembling the system, then you need to add brake fluid to the reservoir and bleed the brakes.

Make sure everything is done correctly and there is no brake fluid leakage. Proceed to adjust the brakes.

Good luck replacing any type of rear brake pads.

Source: http://CarTore.ru/105-zamena-zadnih-tormoznyh-kolodok.html

How to replace rear brake pads?

12.02.2013

Brake pads should be replaced immediately after purchasing a car. You also need to constantly monitor their condition and change them as they wear out: as a rule, the rear brake pads last twice as long as the front ones and they need to be changed only after 70 thousand km or earlier (How often do you change brake pads?), if the thickness of the pad linings will become thinner than 1.5mm.

So, depending on your riding, check your brake pad wear regularly (How Do You Tell Brake Rotors and Pads Wear?).

Let us remind you that the brake system of the VAZ 2114 is fully consistent with the system of other VAZ models: VAZ-2108, 2109, 21099, 2110, 2115, 1117, 1118, 1119; therefore, this manual will be useful not only for drivers of four.

The process of replacing rear brake pads is slightly different from the process of replacing front ones (How to replace front brake pads?) and requires a lot of physical and mental effort: either the drum will not fit into place, or something will become rusty, etc.

In order to replace the rear pads, you will need an inspection hole or overpass, because you'll have to deal with the handbrake. But after wandering around the Internet, I often see that car owners change the pads even without a hole: propping up the removed wheels under the body, driving onto a curb, and the like. These methods are not safe maintenance methods, so I strongly DO NOT recommend doing so.

Before replacing the rear brake pads, it is worth familiarizing yourself with the “unexpected” ones that may come out during the work:

the brake drum is worn out - the internal diameter of the working brake surface of the drum should not exceed 201.5 mm. If the diameter of your drum is larger, then you need to replace it;
The handbrake cable is jammed - if this happens, then no matter how you adjust or loosen the handbrake, it will not work. It’s okay if you temporarily drive without a handbrake, but in such a situation you simply will not be able to put the drum on the pads;
the brake cylinder is leaking or jammed - here I think everything is clear, there is no need to joke about this, you will need to replace the brake cylinder (How to replace the rear brake cylinder?);
the drum is boiling - if you can’t remove the drum, you will have to use a sledgehammer and a block
There are also other pitfalls, but they are of an individual nature.

To work we will need the following tools:

Jack,
balloon,
key sets,
small sledgehammer,
bar,
screwdriver,
pliers,
wd-40.

How to remove rear brake pads?

We drive the car onto the overpass and put it in first gear.
For reliability, we put so-called “shoes” under the front wheels so that the car does not roll away.
We check whether the handbrake is removed and climb under the car. Remove the exhaust system pipe (muffler) from the rubber cushions in the area of the handbrake tensioner.

(It is not necessary to remove all the cushions from the muffler; you must leave the last cushion, which is located under the trunk next to the bumper, so that the exhaust system does not hang in the air).
We loosen the handbrake; to do this, unscrew the cable tensioner nuts with a key set to “13” (look at Figure 1).

Loosen the cable as much as possible so that there are no installation problems in the future.
Take the wheel wrench and loosen the wheel fastenings on both sides.
We put the jack on, raise the car and completely unscrew the wheel.
Using clamps or other improvised means, unscrew the guide bolts on the drum (see Fig. 2).
Next, we try to rotate the drum in some direction. After rotating the drum about 30 degrees, tighten the guide bolts back evenly. Since there are no bolt holes under the current position of the drum, screwing the bolts into the cast surface will pull the drum out.

What to do if the drum does not spin? To do this, we take our sledgehammer and a handle.

We place the handle on the surface of the drum and begin to hit it with a sledgehammer. You don't need to knock in one place, you need to go around the whole circle. We knock until the drum begins to spin. Attention: do not hit the drum with a sledgehammer, otherwise you will split it.

Having removed the drum, we see in front of us two pads, springs and a brake cylinder.
We disconnect the guide springs from the pads using pliers, homemade hooks and other devices (see Figure 3).
Remove the tension spring (see Figure 4).
We remove the pads together with the lever, transfer the lever to a set of new pads.
After removing the pads, compress the side lubs of the brake cylinder. Make sure that the new pads fit strictly into the grooves of the brake cylinder and the handbrake bar fits into the connector on the pads (see figure). Next, we hook the springs into place, do not forget about the handbrake cable - it needs to be hooked to the drive lever on the block.

How to install brake pads?

Compressing the brake pads towards the brake cylinder

Having placed the pads, we squeeze them together in order to recess the brake cylinder once again “just in case”.
Install the brake drum.

If the drum does not fit, then the handbrake may be loose, the cable may be stuck, or the brake cylinder may not be fully clamped.
We put the wheel on, get into the car and press the brake pedal several times so that the pads fall into place.
Spin the wheel by hand: the wheel should spin without much effort, without rubbing the pads.

We perform the same operation on the other side and tighten the handbrake: How to tighten the handbrake? All that remains is to check the handbrake; to do this, you need to hang the wheel on a jack, spin the wheel manually, and pull the handbrake. The wheel should stop and lock firmly. To be sure, try turning the wheel manually - it should be motionless.

I found posts on the Internet about how people sand the pads with sandpaper to make the drum go in easier, we absolutely do not recommend doing this, thereby reducing the life of the pads.

Source: http://vaz-2114-lada.ru/2013/02/kak-zamenit-zadnie-tormoznye-kolodki/

Replacing brake pads. Instructions for replacing front and rear pads with your own hands

Brake pads are a working element of the brake system, which slows down the speed of rotation of the wheels by braking torque due to friction against the surface of the wheel or brake disc. Replacing brake pads is not a complicated procedure and can be done even by a novice car enthusiast, even without experience in such a procedure.

Each part of the car has its own working life, which decreases over time. The wear of brake pads depends on many factors and in each individual case the brake pads will have to be replaced after a different time.

The causes of brake pad wear will be:

the quality of the roads on which the car is operated;
driving style;
temperature conditions throughout the year;
If the brake pads have already been replaced, then the quality of such work affects the service life of the parts.

Front pads wear out faster because most of the inertial force that the brakes dampen falls on the front of the car. So the front pads should be changed two to three times more often than the rear ones.

The pads need to be changed in pairs - immediately changed either on the front wheels or on the rear. The pads on a pair of wheels should not be allowed to have different degrees of wear. It is also necessary to change the pads on time; worn pads severely damage the brake discs and, most likely, the cost of repairs can then increase several times.

When replacing brake pads, you need to pay attention to the degree of wear of various elements of the brake system.

First of all, you need to examine the degree of wear of the brake discs; you also need to check the rubber covers and guide boots for integrity. When replacing pads, the brake hoses are also checked.

All this is done so that if there is a leak, its cause can be eliminated before something irreparable happens on the road.

It is quite difficult to describe the entire process of replacing brake pads in detail, since the procedure for replacing rear brake pads and replacing front pads is slightly different, especially if there is a disc and drum system, and in addition, each car model has its own nuances. However, there are still some general points:

the hood opens and the brake reservoir cap is unscrewed;
the wheel is removed;
the brake mechanism is cleaned of dirt;
the bolts (caliper guides or brake drum bolts) are unscrewed in order to get to the pads;
use a screwdriver to remove the pads (brake mechanism);
pads are changed in pairs;
The brake system is being pumped.

Now let's try to analyze the general procedure for replacing the rear and front pads separately.

Replacing brake pads (disc system)

Having chosen the pads recommended by the manufacturer, take a set of tools, unscrew the wheel nuts, jack up the car and remove the wheel.
You need to start replacing the pads on a cooled down car (so that the parts of the brake mechanism have cooled down), on a flat area without a slope and with a stop (except for the jack itself) placed under the bottom. Use wheel chocks under the wheels.
Unscrew the cap of the brake fluid reservoir (to make it easier to press in the brake piston).
Unscrew the caliper guides, and if there are fixing brackets, remove them with a screwdriver. If your car is equipped with a pad wear sensor, disconnect the connector.
Use a screwdriver to move the pads away (insert a powerful flat-head screwdriver between the pads) in order to press the brake piston. Remove the old pads. Clean the installation site from dirt.
Install new pads. It is recommended to lubricate the caliper guides , but very carefully so that the smear does not get on the contact surfaces of the pads, otherwise the brakes will not work.
Reassemble the brake system in the reverse order, install the wheel, and remove the car from the jack.
Bleed the brakes and let the new brake pads break in.

Replacement of rear pads (drum system)

Carry out the same procedure as in the first two points when changing the front ones.
Remove the car from the handbrake.
Unscrew the brake drum fixing bolts and remove it. The drum may become stuck or cannot be removed as a result of misalignment of the pads, so tapping with a hammer may be necessary.
Remember the location of all locking springs ( if installed incorrectly, the brake will not work ).
Release the handbrake cable, remove all springs and rods of the rear brake mechanism with a screwdriver. Remove the pads.
Install new pads and reassemble the brake mechanism in reverse order. Install the wheel (without removing the car from the jack).
Put the car on the handbrake and try to spin the rear wheel, checking the operation of the rear mechanism.
Remove the car from the jack.

Signs of brake pad wear:

increasing the braking distance of the car;
incorrect behavior of the brake system when braking;
the appearance of metal shavings on brake discs and pads;
knocking noise when braking hard;
squeaking noise when braking.

If at least one of these signs appears, you must immediately inspect the brakes and, if necessary, replace worn parts.

Visually you can detect the following damage to discs and pads :

the thickness of the pad lining is below the required technical specifications;
cracks or delamination of the brake pad;
chips and scratches on the block or lining;
reducing the thickness of the brake disc below the required technical specifications;
uneven pad wear;
the appearance of a protruding edge along the edge of the disk.

After the pads are replaced, they take time to get used to. Therefore, braking may not be as effective . If, after time, braking has not improved, or there are any knocks or vibrations, then the replacement was made incorrectly and the procedure must be repeated.

Source: https://etlib.ru/blog/156-zamena-tormoznyh-kolodok

How and when you need to change the rear brake pads on a VAZ

You can read about how and when to replace brake pads in your vehicle's operating manual. The manual indicates all the most important things: at what thickness of the linings it is necessary to replace the front and rear brake pads.

In this matter, there is no need to engage in amateur activities and count on the fact that you can delay replacing the pads. If it is indicated that the minimum thickness of the linings should be 2 millimeters, then the pads need to be changed.

Replacing brake pads on a VAZ must be done on both sides of the axle at once. Next, you need to use the pad manufacturer's instructions, since they clearly indicate when to change the rear or front brake pads.

The important thing is that to replace brake pads you need not only standard tools, but also some accessories. Especially if you replace pads on disc brakes. These features are difficult to describe, so you need to use only the manual that is intended for a specific car.

Replacing brake pads on drum brakes

You can independently replace the rear brake pads on a disc-type and drum-type system. You need to know the technological process, since the nuances of assembling and disassembling rear brakes depend on the type of VAZ car.

Before replacing the rear brake pads, you need to diagnose them without removing the drum. For this purpose there is an inspection window in the brake mechanism. It is necessary to remove the plugs and evaluate the condition of the lining and its thickness. If you need to replace the pads, then it's worth doing it.

You need to start by weakening the handbrake drive;

the guide pins are unscrewed, the brake drum is rotated and removed. This won’t work the first time, so you first need to tap the drum from the end;

after the drum is removed, you need to remove the guide spring from engagement with the block;

Next you need to disconnect the lower tension spring, remove the front block and the expansion bar;

the guide spring is disconnected from the rear brake shoe, the manual drive lever is removed from the cable tip;

the guide spring is removed from the brake mechanism, the axis of the handbrake lever must be unlined, the axis, lever and washer are removed;

Then the lever is moved to a new brake pad, and the axle needs to be pinned. The brake pads are then installed in the reverse order.

Replacing brake pads on disc brakes

Installing and replacing rear brake pads is significantly different from replacing drum brakes. Here you need not only standard screwdrivers and wrenches, but also special pullers that are designed for the car system.

First you need to loosen the hand (parking) brake cable;

the handbrake lever is released;

the adjustable pins must be knocked out and the locking spring removed;

brake pads and pads are removed;

the caliper surfaces need to be cleaned because the caliper surface is in contact with the brake pads;

You must simultaneously check the condition of the dirt cover for mechanical damage. If there is such damage, then you will need to completely rebuild the caliper;

Next, check the friction surfaces of the brake discs for mechanical damage and measure the thickness of the brake discs. The manual pre-specifies the minimum permissible thickness of the brake discs, so that after a few days you do not have to change the brake discs;

Next you need to push the pistons of the brake cylinder into the cylinder;

then install the brake pads. Both sides of the gasket should be lubricated with a thin layer of silicone grease. The gasket is installed on the rear plate of the block. Next, install the brake pads;

It is important that if during disassembly the brake pad was removed from the caliper, then brake fluid will need to be added to the reservoir, and the brakes will also need to be pumped. Make sure that brake fluid does not leak. Then you will need to adjust the brakes.

Source: http://xenon-kiev.com.ua/kak-i-kogda-zamenit-zadnie-tormoznye-kolodki/

Replacing rear brake pads - a note for the mechanic

The rear pads of a car are the main design detail, which differs little in all cars, regardless of manufacturer. So, the disc brake system that replaced the drum brake system is now found in almost all modern cars, so, having figured out what’s what using the example of the Toyota Corolla, you can repair any disc system.

The principle of operation of rear disc brakes is that the main piston presses the pads against the disc, causing the car to stop. The main element of disc brakes is the caliper; it is in this mechanism that all processes take place.

The main load is, of course, taken by the front pads, because the period of passage of brake fluid to them is much shorter than in the case of the rear ones.

For this reason, rear brake pads can be replaced half as often as front ones.

If there is significant wear and untimely replacement of the rear brake pads, there is a high risk of damaging the brake discs. Replacing them will cost much more than repairing the pads.

First of all, pad wear is affected by their quality itself. Disks also play an important role, with the surface of which friction occurs. Wear and tear while driving around the city occurs much faster than on the highways.

When choosing brake pads, you should not skimp on price.

Automotive brake pads

They will protect the chassis and save you money, increasing ground clearance by 3 cm.

It is impossible to predict exactly when the rear brake pads will need to be replaced - the timing is different in each case, and they even depend on the driving style. The service book only indicates the approximate number of miles after which a replacement should be made.

In practice, it is better to keep an eye on the wear of this mechanism yourself from time to time. It is very important not to allow the pads to wear out completely; they should be replaced when their thickness is less than 5mm. By looking at the wheel, this can be seen with the naked eye.

You can buy brake pads to order or directly in the store. Replacing the pads must be done on both sides at once, even if they are not so worn on the other side.

By the way, if the pads are worn unevenly, this indicates that the car’s braking system is not working properly, and careful pumping of the brake fluid is necessary, which will make your car more stable when braking.

Rear brake pads are much more difficult to change than front ones. To replace you will need the following set of tools:

crowbar;
screwdriver;
WD-40 product;
jack;
set of new pads.

For convenience, when replacing brake pads, it is best to use an inspection hole.

Under no circumstances should you put the car on the handbrake, only in gear, because the handbrake locks the rear wheels, and then it will be impossible to remove the pads. Place something under the front wheels to secure it.

After this, use a wheel wrench to remove the bolts on the wheel, then lift this side of the car on a jack, completely unscrew the bolts and remove the wheel.

Removing the wheel

Rear wheel brake system

Rear disc brakes

Step 2. Unscrew the caliper

Before performing the next stages of work, all threaded connections must first be treated with WD-40 and allowed to stand for 30 minutes. Next, unscrew the caliper fixing bolts. First the bottom bolt, then the top.

To unscrew the bottom bolt, you need to hold it with a wrench on one side and unscrew it on the other. At this stage, you will need to apply some effort, the main thing is not to break the threaded connection of the bolt. If you don’t succeed right away, try several approaches.

After this, unscrew the top bolt, things are much easier with it.

Unscrew the caliper fixing bolts

Unscrew the top bolt

Using a crowbar or pry bar, move the caliper to the lower position; it should move from top to bottom. At this stage we will need a screwdriver. It plays the role of a vice. It must be installed between the brake disc and the caliper pushing piston.

Making a few turns will push the piston inward, allowing you to easily remove the caliper. If you can't do this, try using a crowbar.

However, be careful, as under the influence of such force you can break the top bolt, watch the process carefully.

Move the caliper to the lower position

Removing the rear caliper

Due to the fact that the parts may be old, there is a third option for removing the caliper. To do this, you need to find a rubber stopper on it. This is the plug under which the pressure flows. Take the 8 or 7 key and unscrew it a little. From there, brake fluid will flow under pressure. After this it will be much easier to press the piston.

After completing all the work, you will need to add brake fluid to the reservoir. The same procedure must be followed when replacing the pads on the other side of the car. If the car has a device such as ABS, then during installation, be careful not to damage the sensors that are located near the brake disc caliper.

Step 3. Processing the brake disc

Now you can remove the old pads. Some models may have locking pins. They need to be carefully removed. Treat the brake disc with a fine metal brush or sandpaper.

This will contribute to better friction of the brake pads on the disc and less wear. Lubricate the vehicle caliper and threaded connections with graphite grease. Brake pads do not need to be lubricated under any circumstances.

If they have a protective film, remove it so that there is no unpleasant sound while driving.

Step 4. Install new pads

Insert the new pads into place and return the caliper to its original position. There are times when the pads do not fit well, then their edges need to be slightly wiped with a file. Fix the caliper and tighten it with bolts.

Installing the pads in the grooves

Fix the caliper with bolts

Before installing the wheel, inspect the brake system hoses for leaks. If such places are identified, or the brake hose has cracks, it must be replaced.

On the other side of the wheel, the brake hose will also need to be replaced, even if it is in good condition.

This must be done because the brake hoses may be of different diameters inside, and when you press the pedal, the brakes will operate unevenly, since the pressure will be supplied to the calipers differently. All spring elements of the handbrake mechanism also need to be lubricated.

Step 6. Filling the brake fluid

You can install the wheel back and start replacing the pads on the other side of the car. Upon completion of all work, add fluid to the reservoir under the hood. Use only the brand of fluid indicated on the reservoir cap. The use of other types of fluids may contribute to the destruction of the car's brake hoses.

Putting the wheel in place

Recently, the use of brake pads from other car models has become fashionable. The whole trick is to select the same pads as you need, only from cargo minibuses.

As practice shows, this type of pads is much more durable. If you have the opportunity to experiment, try this option.