The need to adjust the pressure regulator arises after replacing it, as well as after replacing the rear suspension springs or if the brake mechanisms of the rear wheels do not work correctly.
To complete the work you will need an assistant, as well as:
— inspection ditch or overpass;
— a drill or a piece of wire with a diameter of 2 mm;
- a flat section of the road, free from traffic.
1. We install the unloaded vehicle on an inspection ditch or overpass.
2. We press the rear of the car several times to self-install the suspension.
3. Using a piece of wire or a drill with a diameter of 2 mm as a feeler gauge, we measure the gap “A” between the plate and the lever (see photo below, item 6), which should be 2.0-2.1 mm. If the gap does not correspond to the required size, adjust the regulator drive.
4. Using a 13 mm spanner, loosen the bolt of the front fastening of the pressure regulator to the bracket.
5. Using large sliding pliers, we move the adjustment bracket, setting a gap between the plate and the lever of 2 mm.
6. Tighten the bolt of the front fastening of the pressure regulator to the bracket.
1. We drive the car onto a flat section of the road, free from traffic and other obstacles. The assistant steps aside and watches the car's wheels lock.
When braking sharply, the rear wheels should lock with a slight delay (1-2 s) relative to the front wheels.
2. At a speed of about 40 km/h, sharply press the brake pedal with sufficient force to lock the wheels.
a) If the rear wheels are locked before the front ones, then the gap “A” must be increased.
b) If the rear wheels do not lock or lock too late, then the gap “A” must be reduced.
A brake force regulator, or sorcerer in common parlance, is a mechanical device designed to relieve excess pressure in the rear drum brakes.
On VAZ-2109, VAZ-2108, VAZ-2114 and other front-wheel drive models produced in Togliatti, it was installed in the rear left part of the body, under the bottom, in front of the rear suspension beam. The brake pressure regulator on the VAZ-2107 model and other “classics” is located on the right in the direction of travel of the car.
New vehicles equipped with ABS and EBD do not use the sorcerer.
Why do you need a brake force regulator?
The function of the regulator is to temporarily reduce the braking force during heavy braking. The fact is that force evenly distributed on the rear and front axles can lead to a skid of the car. If the rear brakes start working a little later and weaker than the front ones, this does not happen.
Based on the above, we can conclude that the sorcerer is an element of the car’s safety system, partly preserving its stability on the road when the brake pedal is pressed in an emergency. On modern models, this function is performed by ABS. That is why there is no need today to use a technically outdated device in production.
"LADA KALINA"
We set the regulator so that the rear is slightly late in locking the wheels. With this setting and partial load, the car needed only 27 m to stop. Fully loaded - 29.5 m. There are slight difficulties in preventing the front wheels from skidding. We reduce the gap in the regulator to zero - the half-empty Kalina stops after 31.8 m. The braking distance increases by 4.8 m, accompanied by a sharp blocking of the front wheels. The loaded one slows down after 35.2 m, the deterioration is even greater - 5.7 m! The pedal effort is increased and the brakes become noticeably hot.
Now we move the adjuster so that the rear brakes work as efficiently as possible. At partial load, the rear wheels suddenly lock and the car drifts off course—you have to release the pedal. On the verge of blocking it is very difficult to brake. The result is 30 m, which is 3 m worse than the “norm”. Full load gave a result of 26.9 m, which is 2.6 m better than the base (29.5 m). There are no comments regarding deceleration control. At the basic position of the regulator, the braking distance increases with increasing load. At partial load the spread of results is 4.8 m, so the base position is most effective. When you deviate from it in any direction, the braking distance increases.
How does a sorcerer work?
The regulator itself consists of a cylinder, valve, spring and rod. The latter is connected to the rear beam, which ensures the operation of the VAZ-2109 sorcerer. Also, brake fluid circuits pass through the rear brake pressure regulator. For their mounting on the device there are 4 threaded entries. » alt=»»> How does the sorcerer regulator work on a VAZ? During emergency braking, the front of the car is pressed to the ground, and the rear is raised. This causes the regulator rod to move, which blocks the flow of fluid to the rear cylinders. A spring located under the valve prevents it from closing completely. Therefore, the rear mechanisms still work, but later and weaker than the front ones.
The feasibility of installing a vacuum brake booster
The vacuum booster dramatically improves the driving comfort of the VAZ 2108. It reduces the pedal effort required to stop the car. All modern cars are equipped with a vacuum booster. Domestic and imported. Nowadays, it is impossible to imagine a car without a vacuum brake booster.
The amplifier is aggregated with the master brake cylinder and is mounted on a shield separating the engine compartment from the interior of the VAZ 2108. It is connected to the engine crankcase with a flexible hose to supply rarefied air necessary for the operation of the amplifier. A malfunction of the amplifier is clearly indicated by a noticeable increase in the force on the brake pedal. Braking acceleration decreases.
Continuing your trip with a broken amplifier is very risky.
You can drive to the nearest car service center with caution. A cracked hose can be wrapped with several layers of electrical tape. If replacing a cracked hose and check valve does not produce results, the unit must be replaced
If replacing the cracked hose and check valve does not produce results, the unit must be replaced.
Work on removing the amplifier is carried out in this order.
- Disconnect the negative battery terminal. De-energize the electrical system.
- Disconnect the wiring block from the hydraulic reservoir cap located on the brake master cylinder body.
- From the passenger compartment, remove the amplifier pusher pin using pliers. Disconnect the pusher.
- Disconnect the hose going to the engine crankcase.
- Unscrew the two nuts securing the brake master cylinder.
- Move the cylinder away from the amplifier housing. Leave it hanging from the metal hydraulic pipes.
- Unscrew the four nuts securing the amplifier bracket to the engine shield and carefully remove the amplifier.
- Unscrew the two nuts securing the amplifier to the bracket. Disconnect the bracket and amplifier.
Install the new VAZ 2108 vacuum booster in the reverse order.
Possible malfunctions of the regulator
In general, there are few malfunctions that can occur in the sorcerer. These include:
- Valve jamming;
- Misalignment of position;
- Brake fluid leaks.
A deregulated sorcerer can be adjusted. You can determine the need for adjustment by the behavior of the car when you press the brake. If the regulator is set incorrectly, the car starts to toss to the side.
If the valve jams or fluid leaks, the mechanism must be replaced. Theoretically, it can be repaired. However, the process of such repairs is complex and expensive, which makes it unprofitable.
Adjusting the sorcerer viburnum station wagon
Group: Users Messages: 32 Registration: 19.9.2008 From: Kiev User No.: 1.616 From: Kiev, Darnitsky district Car: Kalina 11174, station wagon
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Group: Partner Messages: 448 Registration: 31.3.2008 User No.: 633 From: Ivano-Frankivsk region, Kalush m Car: VAZ-11183-Sedan
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Group: Board of Directors Messages: 2,523 Registration: 11/27/2007 From: Lemberg User No.: 104 From: Galicia Car: 1118 1.6 8 cl
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Setting the brake force regulator
Adjustment of the sorcerer should be done on an overpass or inspection hole. At the same time, the car is unloaded and driven to the work site. To perform the manipulation you will need:
- Socket wrench 13 or corresponding socket;
- Drill diameter 2 mm.
To adjust the sorcerer, use a wrench to loosen the bolt securing it to the lever bracket. Next, use a screwdriver to move the bracket until the resulting gap allows you to insert a prepared two-millimeter drill into it. After this, the bolt is tightened.
Note: the brake pressure regulator of the VAZ-2110 and previous VAZ models turns sour during operation so that it is not possible to move its bracket. In such a situation, you should pour WD-40 liquid over the rusted area, wait 15-30 minutes, and then use a hammer to move the part to the side using a soft drift.
checking and adjusting brakes on VAZ 2110 VAZ 2111 VAZ 2112 cars
Checking pipelines and connections To prevent sudden failure of the brake system of the VAZ 2110, VAZ 2111, VAZ 2112, carefully check the condition of all pipelines and connections, paying attention to the following: metal pipelines should not have nicks, scratches, burrs, active foci of corrosion and should be located away from from sharp edges that can damage them; brake hoses must not have any cracks on the outer shell or signs of chafing visible to the naked eye; they should not be exposed to mineral oils and lubricants that dissolve rubber; by pressing the brake pedal firmly, check to see if any swelling appears on the hoses, indicating their destruction; all pipeline fastening brackets must be intact and well secured; loosening or destruction of brackets leads to vibration of pipelines, causing their breakdowns; Do not allow fluid to leak from the connections of the master cylinder with the tank and pipelines; if necessary, replace the tank bushings and tighten the nuts without subjecting the pipelines to deformation. When tightening the pipeline nuts, use the wrench 67.7812.9525. Eliminate any detected faults by replacing damaged parts with new ones.
Flexible hoses, regardless of their condition, should be replaced with new ones after 125 thousand kilometers or after five years of operation of a VAZ 2110, VAZ 2111, VAZ 2112 to prevent sudden ruptures due to aging.
Checking the functionality of the vacuum booster VAZ 2110, VAZ 2111, VAZ 2112
Press the brake pedal 5-6 times with the engine off to create equal pressure close to atmospheric in cavities A and B (see Fig. 6-2). At the same time, by the force applied to the pedal, make sure that the valve body is not jammed. Keep the brake pedal depressed and start the engine. If the vacuum booster of the VAZ 2110, VAZ 2111, VAZ 2112 is in good working order, the brake pedal should “move forward” after starting the engine. If the brake pedal does not “go forward”, check the fastening of the hose tip, the condition and fastening of the tip flange in the booster, the hose to the tip and the fitting of the engine intake pipe, since loosening the fastening or their damage sharply reduces the vacuum in cavity A and the efficiency of the booster.
rice.
6-2. Vacuum booster: 1 - vacuum booster housing; 2 — amplifier housing cup; 3 - rod; 4 — adjusting bolt; 5 — rod seal; 6 — sealing ring of the main cylinder flange 7 — diaphragm return spring; 8 — amplifier pin; 9 — tip mounting flange; 10 - valve; 11 — hose tip; 12 - diaphragm; 13 — amplifier housing cover; 14 — sealing cover; 15 - piston; 16 — protective cover of the valve body; 17 — air filter; 18 — pusher; 19 — pusher return spring; 20 — valve spring; 21 - valve; 22 — valve body bushing; 23 — rod buffer; 24 — valve body; A - vacuum chamber; B - atmospheric chamber; C, D - channels Adjusting the brake drive of VAZ 2110, VAZ 2111, VAZ 2112
The free play of the brake pedal when the engine is not running should be 3-5 mm. The adjustment is carried out by moving the brake light switch 7 (Fig. 6-11) with nut 6 released. Install the switch so that its buffer rests against the pedal stop, and the free play of the pedal is 3-5 mm. In this position of the switch, tighten nut 6.
rice. 6-11. Brake drive: 1 — master cylinder; 2 - tank; 3 - vacuum booster; 4 — brake pedal bracket; 5 — brake light switch buffer; 6 — brake light mounting nut; 7 — brake light switch; 8 - brake pedal WARNING Adjust the free play of the brake pedal when the engine of the VAZ 2110, VAZ 2111, VAZ 2112 is not running. If the brake light switch is too close to the pedal, it does not return to its original position. In this case, valve 21 (see Fig. 6-2), pressing against body 24, separates cavities A and B, which opens air access to chamber B, and the wheels are incompletely released when the pedal is released.
If moving the brake light switch cannot eliminate the incomplete release of the brake mechanisms, then disconnect the brake master cylinder from the vacuum booster and check the protrusion of the adjusting bolt 4 relative to the mounting plane of the master cylinder flange (size 1.25-0.2 mm). This size can be set by holding the end of the rod with a special wrench, and with another wrench, tightening or unscrewing bolt 4.
Replacing the brake pressure regulator
The replacement of the sorcerer on VAZ-2110 cars and other vehicles equipped with an RTD is carried out on an overpass. You need a 13 mm spanner, a powerful screwdriver and a special 10 mm wrench designed for unscrewing brake pipes. Before starting work, the assembly must be cleaned of dirt and rust, doused with WD-40 or another penetrating compound, and then wait half an hour.
Work begins by unscrewing the bolt securing the bracket to the spring. Afterwards, the brake pipes are dismantled, the position of which is recommended to be pre-marked.
Auto repair school - Do-it-yourself car repair
Jun 25, 2022 VAZ 2108, VAZ 2109, VAZ 2110, VAZ 1117 Kalina, VAZ 2170 Priora by admin
Yes, that’s right, the article is specifically about replacing and adjusting the sorcerer (as this part is popularly called) or the rear brake pressure regulator (according to science) on VAZ-2108, VAZ-2109, VAZ-21099, VAZ-2110, VAZ-2115 cars , VAZ-1118 Kalina, VAZ-2170 Priora . This time, we won’t throw anything away, simplify or improve anything. Since after the article on “modernizing” the brake system of the Classic, by removing the rear brake pressure regulator, I received a decent amount of criticism in my address. They say you can’t do this, the rear brake pressure regulator must be on the car, otherwise during emergency braking you may experience an uncontrolled skid of the rear axle. And this is fraught with serious consequences... And despite the fact that I conducted an experiment on my kopeck and after it, on several cars of the VAZ 2101-2107 family and did not notice any problems with skidding when braking, I did not dare to experiment with “tuning” the brake systems of Samar, Kalin and Prior .
In principle, I can even explain why. Unlike the classics, replacing and adjusting the notorious rear brake pressure regulator in Samara is a breeze. I can say for sure that installing a tee from Classic instead of a sorcerer will take you much more time and effort than replacing and adjusting it. Plus, one tube will be superfluous and you will have to install a plug on the main brake. But the effectiveness of the brakes and the car’s controllability during emergency braking remains a big question mark! Why do you need this? Also, it is worth remembering that in this case, we are talking about faster, more dynamic, front-wheel drive cars... After reading the article, I think that you will agree with me that it is easier to leave everything in its place and carry out a simple setup of this unit, than to compete with the AvtoVAZ design bureau, “simplify and improve” the brake system, and thereby look for...adventures) )).
Reasons why you should change or adjust the sorcerer (rear brake pressure regulator) on VAZ-2108, VAZ-2109, VAZ-21099, VAZ-2110, VAZ-2115, VAZ-1118 Kalina, VAZ-2170 Priora . There are two main reasons for replacing this part. The first reason is wear of the cuffs and, as a result, leakage of brake fluid. The second, the sorcerer’s piston turned sour, rusted, and generally froze in one place. In the first case, everything is simple, the brake fluid leak is easy to see. But in the second, you will have to find an assistant who will press the brake pedal, and at this time you watch the pressure regulator rod (1), it should extend from the regulator body and press the spring plate (2) to the drive lever (3) . Let's look at photo 1. If everything happens like this, then the sorcerer is working, all that remains is to check whether it is adjusted correctly. If not, the rod does not move, then the rear brake pressure regulator should be replaced. And for regulation. The adjustment and condition of the sorcerer should be checked at every technical inspection, after replacing the rear struts or springs, after any work on the rear beam and, of course, after replacing the sorcerer itself. A working pressure regulator should look something like this (photo 2), there are no signs of fluid leakage, the rod is movable, the gap between the plate and the drive lever is 2 mm. If you see a picture like in photo 3, then such a sorcerer should be checked and adjusted. The same should be done if the distance between the plate and the lever is more than 2 mm. Also, some craftsmen put nuts or metal plates between them, throw them away and check the serviceability of the sorcerer. How to properly adjust the sorcerer (rear brake pressure regulator) on VAZ-2108, VAZ-2109, VAZ-21099, VAZ-2110, VAZ-2115, VAZ-1118 Kalina, VAZ-2170 Priora, read a little below.
Let's start with the selection of spare parts. I recommend installing a sorcerer (rear brake pressure regulator) manufactured by VIS. There is no better option. All other options are your personal choice. The only thing is that I would not advise you to contact the sorcerer produced by Fenox; I had an unpleasant experience. But this is my personal opinion, maybe I was unlucky (several times
