When stopping the car when you press the brake pedal, not only the front pads, but also the rear ones take part. Therefore, if the braking distance of your “nine” has become a little longer than it was previously, it may be necessary to replace the rear brake pads of the VAZ 2109.
You can understand that it is time for replacement using the handbrake. Raise it and check the stability of the machine. If the car rolls with the handbrake raised, it means the pads have worn out. A characteristic sign is a “grinding” sound that can be heard from behind the car when braking.
The process involves removing the brake drum, retracting the springs, removing the old linings and installing the new ones correctly. Also, after such a procedure, adjustment of the handbrake may be required. Be sure to remember that after removal, the handbrake spacer bar must be installed with a narrow slot towards the front of the car! The complexity of the procedure lies in the fact that the drum can be very difficult to remove, and you will also have to deal with springs when removing and installing parts.
What rear pads are installed on the VAZ 2109
The most common rear pads that car owners install are original VAZINTERSERVICE (VIS-Auto) brake pads. Article - 21080-3502090-55. The average price is 730 rubles. Such pads are good because they ideally match the model in size, composition and service life.
Among analogues, the most reliable manufacturers are:
- ATE - Germany (03013702312);
- TRW - USA (GS8210);
- FERODO - UK (FSB240);
- STS - Russia (11524-STS);
- EzATI - Russia (2108-3502090).
Brands ATE, TRW and FERODO offer a reliable composition of materials that does not damage the inner surface of the drum. The cost of such pads ranges from 800-1500 rubles. per set. Domestic manufacturers STS and EzATI produce overheat-resistant pads. They are worse in composition, but the price is more affordable - about 600 rubles. per set.
Features of replacing rear brake pads on VAZ 2108, 2109, 21099 cars
The service life of rear brake pads on VAZ 2108, 2109, 21099 vehicles and their modifications is 60-70 thousand km.
Depending on driving style, serviceability of the brake system and operating conditions, this period may vary up or down. Therefore, the frequency of checking the condition of the brake pads is 60,000 km. The minimum permissible thickness of brake pads is 1.5 mm. In this case, the brake pads must be replaced. They must be replaced in pairs (on the right and left rear wheels at the same time).
Necessary tools, accessories and spare parts
— Set of rear brake pads for VAZ 2108, 2109, 21099 cars and their modifications
— Medium slotted screwdriver
— Pliers with thin jaws
Preparatory work
— Remove the rear wheel
- Remove the brake drum
— Clean the rear brake mechanism from dirt
The procedure for replacing brake pads on VAZ 2108, 2109, 21099 cars
First remove the front brake pad, then the rear. Before removal, we bring the pads together as much as possible, pushing the pistons of the brake cylinder inward. This can be done using two mounting blades if their ends are placed behind the shoulder of the supporting brake shield and compress the pads with them.
— Disconnect the upper tension spring of the brake pads
We lean the slotted screwdriver on the brake cylinder and using it as a lever, use its blade to pry up the edge of the upper tension spring and disengage it from the front block. We take out the spring.
Disconnect the upper tension spring
— Disconnect the front pad guide spring
Use a screwdriver or pliers to pry up its edge and remove it from engagement with the block.
Remove the front brake pad guide spring
- Remove the front brake pad
We lower it down along with the lower tension spring. Disconnect the spring and remove it by hand.
Removing the front brake pad
— Remove the expansion bar
It is not secured by anything and is simply removed.
Removing the expansion bar
— Disconnect the guide spring from the rear brake pad
We pry it off with a screwdriver or pliers.
- Remove the rear brake pad
In this case, it is necessary to remove the tip of the parking brake cable from engagement with the manual drive lever (the lever is secured to the rear block).
Removing the rear brake pad
— Separate the manual drive lever from the rear block
To do this, you need to unsplit the lever axis using pliers and remove the lever from it.
That's it, the brake pads are removed.
Features of installing new brake pads in the rear wheel brakes
— First install the rear brake pad, then the front in the reverse order of removal
— Attach the manual drive lever to the rear brake pad
At the same time, we put the lever on the axle, install the spacer washer, install the lever, and secure it with a cotter pin.
— Tension the tension springs using pliers or a screwdriver
— After installing the brake pads and drum, press the brake pedal several times to self-adjust the gap between the pads and the drum
We carry out a similar procedure for removing the old brake pads and installing new ones for the other rear wheel.
Notes and additions
— When replacing rear brake pads, it is necessary to evaluate the condition of the brake drums, since the efficiency of the rear brake mechanisms of the braking system of VAZ 2108, 2109, 21099 cars is based on the interaction: pads - drum. And if the drum is worn out and the pads are new, normal braking will not be achieved.
— Also, if necessary, replace the guide springs of both pads.
— You should pay attention to the brake cylinders of the rear brake mechanisms. Leakage of brake fluid through their seals is unacceptable. It is also unacceptable to operate cylinders with damaged anthers.
Twokarburators VK - More information on the topic in our VKontakte group, on Facebook Twokarburators FS and on Odnoklassniki - Twokarburators OK
More articles on the braking system of VAZ 2108, 2109, 21099 cars
— Vibration and beating when braking
— Checking the brake system of VAZ 2108, 2109, 21099 cars
— “Bleeding” brakes on VAZ 2108, 2109, 21099 cars
— Brake mechanism of the front wheel (caliper) of VAZ 2108, 2109, 21099 cars
— Replacement of front brake pads in brake mechanisms (calipers) of VAZ 2108, 2109, 21099 cars
Necessary tool
Tools you will need:
- hammer;
- wooden stand;
- 2 bolts for “8”;
- screwdriver (preferably flat);
- pliers;
- steel wire (the wire needs to be bent at the end with a small hook);
- a set of keys, which contains a special key for unscrewing the nut of the parking brake cable equalizer.
It looks like this:
Auto repair school - Do-it-yourself car repair
Sep 30, 2016 VAZ 2108, VAZ 2109, VAZ 2110, VAZ 1117 Kalina, VAZ 2170 Priora by admin
change the front brake pads in VAZ-2108, VAZ-2109, VAZ-21099, VAZ-2110, VAZ-2114, VAZ-2115, VAZ-1117, VAZ-1118, VAZ-1119 cars. But even an experienced motorist cannot replace the rear brake pads Since for this operation it will not be enough to have a jack and a pair of open-end wrenches. And in order to make your work easier and save your nerves (which, as you know, do not recover!) when replacing rear brake pads , it is better to prepare seriously and thoroughly. You can start by choosing a location for work.
And in this place there must be an inspection hole or a lift. I can explain why. You will have to perform two operations that will be not only difficult but also dangerous to do from the ground. For example, to remove the rear brake drum and replace the brake pads , you will have to release the handbrake cable . It will be very difficult to do this “from the ground”, even with a special key (without this key, getting to the equalizer and unscrewing the nut will only be possible by removing the resonator. And this is extra work that no one needs). Also, quite often it is not possible to remove the brake drum “in an amicable way”, due to the fact that it is tightly stuck. And it will not be possible to remove the drum using two M8 bolts, which are screwed into the threaded holes of the brake drum and press it from the hub (although you can try, of course). In this case, you will have to knock down the brake drum using a hammer and a wooden attachment (a metal one is not suitable, crumble the drum). And you can imagine how you can lie on the ground with a hammer and a guide in your hands, methodically tapping a drum (with two hits you may not be able to knock it down). It won't be work anymore, it will be... song! Plus, extreme elements are added to this (don’t forget that the car is on a jack).
Well, I think we have decided on the place, we can move on to the necessary tool.
Your arsenal should consist, in addition to the wheel wrench and jack: a special wrench for unscrewing the nut of the parking brake cable equalizer ( photo 1a), a hammer, a wooden adapter, a screwdriver, pliers, a steel wire bent at the end with a small hook (a very useful thing), a metal wrench for tensioning the spring (I use a homemade device to tighten the spring (it can be found in photo 1). Which you can also do yourself or with the help of a turner).
Everything seems to be done with the instrument! We bought the pads... Now we move on to the process of replacing brake pads on cars VAZ-2108, VAZ-2109, VAZ-21099, VAZ-2110, VAZ-2114, VAZ-2115, VAZ-1117, VAZ-1118, VAZ-1119 .
1) We drive the car into the inspection hole, leave the gear engaged and install anti-roll stops under the front wheel.
2) Loosen the wheel bolts and lift the required side with a jack, remove the wheel. We go down into the pit and, using a special wrench, unscrew the nut of the parking brake cable equalizer (photo 2).
3) Using pliers, unscrew the guide bolts of the brake drum (photo 3).
4) And after that we try to remove the brake drum (I described the methods above).
5) When the drum is removed, disconnect the guide springs (photo 4) and the tension spring (photo 5) the brake pads
6) Transfer the drive lever from the old block to the new block (photo 6).
7) When installing and tensioning the springs, make sure that the brake pads fit exactly into the grooves of the brake cylinder , and the handbrake bar fits into the slots on the pads (photo 7). Don't forget to hook the end of the handbrake cable to the drive lever on the block! After that, using a screwdriver or a pry bar, we cling to the edge of the support disk and bring the brake pads together (you can also “bring together” the pistons of the rear brake cylinder before installing the pads).
We put on the brake drum and install the wheel. We do the same work on the other side, but do not lower the wheel to the ground. Press the brake pedal several times. We go down into the pit and tighten and adjust the handbrake cable . Tighten the nut on the parking brake cable equalizer and check the tension. Raise the parking brake handle and count the clicks; if more than 8, then tighten the nut a little more and check again. The optimal number of clicks can range from 7 to 2. The main thing is that when the parking brake is raised, the wheels are blocked (the wheel is not lowered yet, we try to turn it by hand). And with the parking brake handle in the lowered position, the wheel should rotate freely, without rubbing the pads. Otherwise, when moving, the drum may heat up and jam.
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Features of TC
Brake pads (TC) installed on the VAZ 2109 have their own features and characteristics, which you should know about before purchasing new parts.
- The base of the block is made of fairly durable metal.
- A friction lining is glued on top of the base using special glue under the influence of a temperature of 100 degrees Celsius.
- The rear brakes include 4 pads. The body and base are stamped from sheet metal and then welded.
- The roughness on the surface of the pads, necessary to speed up the grinding in of the brake pads, is achieved through special processing.
- Efficiency during control braking from 80 km/h - 320 Nm. The pressure inside the brake system is 40 bar. The pads are cold.
- All elements of the brake system are made in accordance with strict international standards and requirements.
- The service life of a vehicle directly depends on driving style, road conditions and a number of external factors.
The operating manual states that the service life of the TC on the VAZ 2109 is within 70-90 thousand kilometers. But in practice this period is somewhat shorter.
Rear TC kit
Golden rules
There are four golden rules that must be strictly adhered to when replacing front and rear TCs.
- When cleaning brakes, never use mineral solvents such as diesel fuel, gasoline, etc.
- When replacing pads at the rear or front, both should be changed at once.
- You cannot swap front and rear TCs, as well as left and right, and vice versa. Otherwise, braking will be uneven.
- If there is a maximum level of brake fluid in the reservoir (MAX mark), part of the brake fluid must be pumped out.
Taking into account all these rules, you can begin to replace the TC.
