Rear disc brakes on a VAZ 2114 - how to install, which ones to choose

The products of the domestic automobile industry are reliable cars that can cope with our roads and at the same time maintain their suspension. But VAZ cars also have disadvantages, one of which is factory assembly, which does not imply the installation of alternative parts. This also applies to the 2114 model, which as standard is equipped with drum brakes on both wheel sets. This material describes in detail how to install disc brakes instead of drum brakes on your own.

IMPORTANT: changes and replacements in the brake system of VAZ cars are prohibited, the article is written for informational purposes only.
Interesting: AvtoVAZ also switched to disc brakes. The first model to receive this modernization was the Lada Kalina. Subsequent VAZ cars also received disc brakes on the rear wheels.

pros

Let's look at why disc brakes are better than drum brakes:

Braking becomes more reliable, braking distance is reduced;
Braking forces are distributed more evenly, given that the VAZ 2114 is a front-wheel drive car;
There is an effect of faster response after pressing the pedal;
Unsprung masses are reduced;
Heat dissipation occurs better, which is especially important when driving on a mountain road or during active acceleration/braking. For this reason, the brake system is cooled better;
Disk ones are much easier to dismantle and replace;
There is no need to adjust the handbrake after each repair of the rear brakes, although this will have to be done the first time;
They do not freeze in winter after washing, like drum ones;
Rear disc brakes installed on the VAZ 2114 are much more convenient to control and promptly notice pad wear.

Advantages of disc brakes

Installing new elements in the rear wheelset is not a whim, since disc brakes significantly increase the safety of the driver and his companions, other motorists, as well as pedestrians. The two main advantages of a disk system are described below:

Stable work. Weather conditions have little effect on how disc brakes perform. The same cannot be said about drum brakes, since they only perform well in dry weather. When there is light rain, the braking distance increases significantly;
Resistance to overheating. Owners of Samara have probably noticed that when braking frequently at speeds above 100 km/h, the brake pedal begins to “fail.” This defect usually occurs due to overheating of the brake fluid. Intense friction occurs between the pads and discs, as a result, the parts of the drum mechanism can heat up to 600 degrees.

Minuses

Replacing brakes with disc brakes was not without the famous “fly in the ointment,” although it rather concerns precisely those problems that their installation can cause.

Firstly, our law enforcement agencies consider their installation on a VAZ 2114 as a design change.

What might this entail?

Fine when passing a technical inspection;
You can be simply wrong in a controversial accident if traffic police officers emphasize that you have “wrong” brakes;
And the insurance company may also consider this a reason for non-payment of insurance.

Secondly, the handbrake will additionally need to be modified - or replaced with a hydraulic handbrake, although the latter weakens over time.

Thirdly, it is necessary to refine or carefully adjust the sorcerer so that on the VAZ 2114 the rear wheels do not brake more than the front ones, as this will certainly cause a skid, especially on ice or wet asphalt. To do this, sometimes you even have to grind down the pads by a quarter, or even more.

Design Features

It is better to purchase rear disc brakes as a complete set. The VAZ 2114 fits 13 or 14 inch brake discs (ventilated or non-ventilated). Try to purchase certified discs so that they do not have to be modified.

Rear disc brake kit with necessary components

You also need a caliper, which comes in three types, so you need to select it to match the disc. The caliper comes with a hose and brake pads. The kit includes a universal clamp suitable for all calipers - a faceplate.

Necessary tool

Replacing a brake disc with your own hands does not require specialized technical knowledge; it is enough to prepare the necessary tools to carry out the work according to the list:

Jack;
Balloon wrench;
Key for 12 and 17;
Hammer and wooden block;
Liquid WD-40 or its equivalent.

Useful : Step-by-step instructions for replacing rear pads on a VAZ 2114

The replacement procedure takes from 3 to 5 hours, depending on your repair experience.

Dismantling

Before installing disc brakes, you need to dismantle the old rear brake mechanisms of the VAZ 2114.

This is done like this:

Remove the wheel;
Remove the brake drum;
Remove the pads;
Remove the hub from the wheel, having first unscrewed the brake pipe.

You should prepare for the fact that dismantling will not be easy. Not only do the brakes have the unpleasant tendency to stick during operation, but the bolts are also “welded” by corrosion. Therefore, it is advisable to treat the nuts and bolts themselves with a special agent (for example WD 40) so as not to tear off their edges.

It is important to plug the removed pipe with something so that brake fluid does not leak out and air is not sucked into the system. After that, knock down the hub. This works best if you attach a board or lath to the back of the support disk and hit it with a hammer, moving the blows: one from below, the other from above. This will prevent you from causing serious damage to the disk.

How to determine rear wheel brake pad wear

To be able to visually determine the wear of the pads on the rear wheel, the wheels must be removed. In this case, you must act as follows:

Having placed the car on a flat, solid area, install a jack under the bottom in the area of the rear wheel at a distance of approximately 300 mm from the front edge of the wheel arch;
loosen the wheel rim mounting bolts;
jack up the car to the required height and completely unscrew the mounting bolts;
remove the rear wheel;
To remove the drum, you need to unscrew the two guide pins using an open-end wrench or a 12-point socket;
as a rule, the drum is removed with great difficulty; to facilitate the process, it has special holes with M8 threads, the removed pins are inserted into this thread and as it is tightened, it is pressed out

drum;

measure the thickness of the friction layer, it should be at least 1.5 mm, while the pads should not have traces of oil, mechanical chips and they should be properly secured.

If it is necessary to replace the rear brake pads, they must be replaced on both wheels on both sides, as well as on the front disc brakes.

Brake pads

Every driver must remember that attention to the car’s braking system and timely diagnosis of brakes is a concern not only for his own safety, but also for the safety of his family, as well as other people on or near the road.

Installation

It's time to install disc brakes instead of the removed rear drum brakes.

Having knocked off the hub, we will put it back, but in a different way:

It should be installed through the plate into which the caliper is already mounted.
Carefully ensure that all holes line up. Particular attention to alignment;
Next, use a hammer to straighten the corner of the beam so that the caliper does not rest against it;
Now you can put the brake disc on the hub, placing spacers between these parts, and secure the disc with a bracket;
We install brake pads from VAZ 2114;
First, carefully and securely attach the brake hose to the caliper, and then to the tube;
To reduce the braking force of the rear brakes compared to the front, you need to partially grind off the friction material of the pads.

Replacement process

First, we install the car on the site where we will carry out repairs. We set the parking brake and put supports under the rear wheels for safety.
Use a wheel wrench to remove the nuts on the wheel, then jack up the car and remove the part.
Now we need to unscrew the steering wheel in the opposite direction from the repair one so that we can more easily get to the caliper mounting bolts.
Use a screwdriver to separate the pads, pressing the brake cylinder inward.
On the back of the hub there are two 17mm bolts that hold the mechanism together with the bracket; unscrew it completely.
Disconnect the brake hose fastener from the rack and remove the element. Do not leave the caliper hanging from the brake hose; carefully place it on something or hang it on a wire.
Next we need to unscrew the two pins that hold the brake disc itself. This is done with a key of 12.
Now you can remove it. If it cannot be removed by hand, you can use a hammer to knock it evenly from the back.
After removal, you need to clean the area where the brake disc meets the hub.
Read also: Hydraulic handbrake on a Lada - installation and other little things
When the element is prepared, you can install a new part and assemble everything in the reverse order.

Before driving onto the road, it is worth checking the effectiveness of the braking system. To do this, you need to ride at low speed around the site and brake several times.

Examination

Having carried out all the above operations - first on one wheel, and then on the second, you also need to check the system for leaks. The first phase is to simply press the pedal.

The fact that everything is done normally is indicated by the fact that the pedal is pressed with force, quite tightly.

But this is not enough. Have someone else press the brake pedal while you try to rotate the parts that make up your new rear disc brakes.

If nothing moves, it means that your VAZ 2114 now has new rear disc brake systems - better and more reliable than the previous ones.

Basic information

Since the release of the first car at the car plant in Tolyatti, and this was the Zhiguli-2101 model, popularly nicknamed the “penny”, almost to this day the brake system diagram of all cars has remained unchanged. Discs were placed in front, and drums in the back. This is logical, since the main load during braking falls on the front ones.

Of course, this scheme is much more effective than the GAZ-24, which has drums in a circle. Because it’s no secret that disc brake pads grip much better, and the distance to stop is correspondingly much shorter.

Bleeding and adjustment

After any manipulations with the brake system (it doesn’t matter whether you repaired the rear, front or parking), on the VAZ 2114 it is vitally important to bleed the brakes so that an air plug does not form anywhere in them, which can negate the ability to brake at the right moment.

It is convenient to do this together, but you can do it yourself, although this requires some additional equipment. Many people know how to bleed the brakes on a VAZ 2114. The main thing is not to forget to do this diagonally, always starting with the front wheels, and pump the right one first.

After bleeding, you still need to check the braking forces. This requires an outside observer. You accelerate and brake sharply, and he watches as the brakes apply. The front ones should work first, then (with a small gap) the rear ones, and the braking force should be greater for the front ones.

Which brake disc to choose?

The first cars of the Samara family were equipped with an 8-valve engine. At that time, effective braking was not required and the brake disc options were size R13, ventilated and non-ventilated. Since 2000, they began to install a 16 valve engine and the size of the mechanism was also increased to R14, and they were installed only of the ventilated type.

When purchasing, you definitely need to pay attention to the brand of brake disc, the quality of its performance and reviews from car owners. The price for non-ventilated products will be about 700 rubles per piece, for ventilated ones about 1000 rubles. If we consider the size R14, then the prices for the models are on average 1,500 rubles.

After reading reviews from car owners, we can identify several brands that are most often recommended for purchase:

Lada –750 rubles;
Lada SPORT – 1150 rubles;
Valeo – 1250 rubles.

It is recommended to immediately replace the front pads along with the brake discs, since the old ones most likely have wear left from the previous discs.