Windshield wiper device
In order to repair non-working wipers of a VAZ 2107, you need to know the structure of the windshield wiper (the author of the video is Avtoelektika VC).
Schematic diagram of a glass cleaner
On sevens, a windshield wiper of the SL-193 type is installed. It is located in the engine compartment in the heater air plenum box. Its electrical circuit is similar to the electrical circuit of the glass wipers on the VAZ 2106.
Electrical circuit of the purifier
- fuse;
- electric motor of the unit;
- fuse box;
- a switch that supplies water to the glass;
- a switch that changes the speed of movement;
- relay;
- egnition lock.
The windshield wiper consists of a lever mechanism, brushes, levers and an electric motor with a gearbox. The mechanism is turned on using a switch on the steering column, which also turns on the washer motor. Thanks to the motor and gearbox, a rotational movement is created that drives the trapezoid.
VAZ cleaner gearbox
The shafts are connected to the gearbox by rods and transmit oscillatory movements. As a result, the brushes move across the surface and clean it of dirt.
A washer is installed to remove dirt. The design of the VAZ washer includes: a motor, a pump, nozzles and a reservoir. The motor starts the washer pump, which pumps up the fluid in the washer reservoir. It sprays onto the glass through the nozzles.
How to install washing machine attachments
Nozzles for washing machines of any type can be adjusted. They are a plastic housing in which several nozzles are installed (usually 2 or 3). These attachments are spherical in shape and can be adjusted by the driver as desired. To adjust the nozzle nozzle for the washer
, it is enough to have a simple needle with which you can gently turn them in the desired direction.
If the car is equipped with three-jet injectors, there is no need to install them at the same height. It is advisable that the outermost windshield washer nozzles be directed to the lowest points. This will protect the glass from micro-scratches (which can happen if the windshield wipers are “dried out”), and the sprayed liquid will not interfere with the driver’s vision. The central washer jet should be adjusted so that it touches the top of the glass.
READ How many liters of oil to pour into a VAZ 2107
On each specific car, the driver must decide for himself how convenient it is to control the windshield nozzles. Don't neglect their settings, you just need to spend a couple of minutes to avoid visibility problems while driving when cleaning your windshield.
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The cars have special equipment for driving in bad weather. The windshield of the VAZ 2107 is cleaned of water by movable brushes, and if dirty, the washer
. This device sprays a special liquid, it works simultaneously with the wipers and removes dirt.
Thus, the equipment provides the necessary visibility for the driver and passengers. This device includes the following elements:
- Liquid tank.
- The pump is running on board.
- Injectors that perform the windshield of a car.
- Pipes connecting the tank to the drives.
At the end of the summer season, the system replaces the water with an antifreeze liquid, allowing you to use the system in winter.
Common faults and solutions
The reasons why wipers do not work on cars, regardless of whether it is a UAZ or a S7, are basically the same. Below are the malfunctions and methods for eliminating them.
| Malfunction | Remedy |
| The wipers do not work in both modes. | In this case, you should check the fuses. If they are burnt out, they need to be replaced with new ones. If only the contacts have oxidized, you need to pull out the fuses several times and put them in place. It may be necessary to replace the VAZ wiper trapezoid. |
| Brushes do not work only in intermittent mode. | In this case, you first need to check the power supply. If there is voltage, then the cause of the breakdown is in the relay. |
| The wiper switch is faulty | Change three lever switch |
| The wipers work, but when turned off they remain in an arbitrary position. The reason may be a breakdown of the gearbox, since it contains a limit switch. | It is necessary to clean the contacts or bend the switch plate. If necessary, the gearbox should be replaced. |
| The electric motor does not work. | In this case, you need to dismantle the electric motor and check the condition of the windings and brushes. |
| The brushes do not move when the gearbox is running. | The gear teeth are broken and need to be replaced. The crank may be loosely secured to the gear; you need to tighten the fastening nut. |
The problem is mainly mechanical - the trapezoid breaks. When repairing wipers, many replace standard products with frameless ones. They have an attractive appearance, adhere better to the glass, and do not have hinged joints, so they are not affected by dirt and icing.
Frameless brushes for cars
The design of a glass cleaner is a complex mechanism consisting of a large number of parts. Any of them can fail, which will lead to either a complete failure of the mechanism or poor cleaning of the glass.
If you understand the electrical circuit of the windshield wiper mechanism, you can do the maintenance yourself.
Troubleshooting
The switch will have to be replaced if there is no power. The control circuit could also have broken; this option should also be excluded. The relay cannot be repaired, so even if there is power, but it does not work, it needs to be changed.
- If the reason is in the electric motor of the cleaner. When there is voltage at the contacts of the electric motor, but the motor itself is “silent,” it means that the problem lies in a malfunction of the device itself. The windings could have failed or the brushes may have worn out. The former break if the motor is overloaded, while the latter simply wear out over time. In this case, repairs yourself are impossible, and you should contact a car repair shop.
- The wipers freeze. Quite often in domestic cars (and the VAZ 2107 is no exception) you may encounter the fact that when they are turned off, the wipers do not occupy the required initial position, but remain where they were at the time they were turned off. The problem in this case lies precisely in the drive gearbox. It has a limit switch and is actuated by a cam. And the job of the cam, in turn, is precisely to control where the brushes will be after the power stops being supplied to the switch lever. A malfunction in this option in most cases occurs when the driver turns on the wipers that are frozen to the glass. As a result, the gearbox breaks down and needs to be replaced.
Requirements for windshield wipers.
The windshield wiper circuit has several types of design. With any design, windshield wipers must ensure cleaning of the windshield regardless of the amount of precipitation. Automotive windshield wiper drives usually have two speeds. It should ensure that the brushes are placed in the extreme position when turning off, which does not interfere with the driver’s view.
On modern cars, the windshield wiper drive has an intermittent operation mode. It is provided by a thermal or electronic relay included in the power supply circuit of the wiper drive. This mode can be either with a constant period of time or adjustable. During intermittent operation, one or two cycles of brushes pass across the windshield with breaks of 3 - 5 seconds. In addition, on some cars, for example VAZ classic, the intermittent mode serves as a low-speed wiper drive.
Windshield wiper relay with adjustable pause
Very often, weather conditions on the road develop in such a way (for example, with light drizzle) that there is a need for intermittent operation of the windshield wiper blades. In such situations, many motorists understand how convenient it is to have a windshield wiper relay with an adjustable pause on their car. Thanks to this design, driving comfort is significantly improved. We will talk about the need for such a relay, how to use it and whether it can be installed on your car if it doesn’t already exist in this article.
What is the advantage of a relay with an adjustable pause
As a rule, all modern cars have at least 2 operating modes for windshield wipers: intermittent (that is, with a pause between sweeps of the blades) and constant. Have you ever encountered a situation where, during light drizzling rain, when the windshield wipers operate in “pause” mode, this pause is too short and the wipers “scrape” on the windshield that has not yet gotten wet? I think most drivers have found themselves in similar situations. If your car does not have the ability to adjust the pause in the operation of the brushes, there are only two ways to solve the above problem. The first is to turn the wipers on and off as needed, but this distracts the driver from driving and creates additional risks for safe driving, especially if the trip is long. The second way is to leave everything as is, that is, to accept the movement of the brushes on dry glass, but this, firstly, leads to increased wear of the wiper cleaning tape, and secondly, it can irritate the driver.
Methods for connecting windshield wipers.
The connection diagram for windshield wipers can be divided into two types, depending on the method of connecting the operating mode switch.
In the first connection method, a constant plus is supplied to the wiper drive electric motor, and the mode switch connects the motor elements to the minus. This method is widely used in foreign and domestic cars.
The second method is completely opposite to the first, that is, power is supplied to the electric motor through the mode switch, and the minus in this case is taken from the drive housing.
I propose to consider the principle of operation of a car windshield wiper circuit using an example, where plus is supplied to the electric motor through a mode switch, since this is the more common connection method.
The diagram shows the connection of a windshield wiper drive with an electric motor powered by permanent magnets and having two operating speeds. The difference in speed in this circuit is ensured by the displacement of one of the positive brushes relative to the physical center of the electric motor armature.
Replacement
If the old motor has failed, there is no point in trying to repair it somehow. To buy a new part, you will have to spend very little money. And the replacement procedure on most cars is extremely simple.
I will describe the main stages of work associated with replacing this element of the windshield cleaning system of any car.
- Turning off the vehicle's power. A safety measure without which further work makes no sense. Be sure to remove the negative terminal from the car. It's simple but important. Otherwise, you not only risk burning the wiring, but also getting an unpleasant electric shock yourself.
- Search for a motor. It all starts with identifying where your windshield wiper motor is located. It depends on your car. On some cars, just lift the hood and you will immediately see the washer reservoir. The motor itself is located on the reservoir (partially inside) of the windshield wiper, into which the liquid is poured. Do you see the tank? If yes, then you are in luck. If not, then you will have to look for it by removing elements of the engine compartment. On some car models, the tank is hidden so that the fender protection has to be removed.
- Disconnect the connectors with wires from the motor. Then remove the tank itself.
- The hose and fitting are separated from each other. Don't forget to drain the liquid. Filling a new one will not be difficult. Yes, and for prevention it won’t hurt to do it.
- Using a screwdriver, push the intake seal out of the bushing. This will allow you to completely remove the windshield washer motor.
- Don't forget to install a new bushing when reassembling. This often leads to the washer pump itself breaking down. So the old bushing goes to the landfill.
- Reassemble the assembly in reverse order. Here many craftsmen relax, because they consider the work done. In fact, reassembly causes more problems than disassembly. Advice from someone who made similar mistakes. That is, from me. Do not try to remember the location of parts unless you are confident in your memory capabilities. We got distracted by something, forgot, got confused. This happens to everyone, and there is nothing wrong with it. To ensure proper reassembly sequence, you can record, mark, or label the parts in the order in which they are removed. This will make it easier to put everything back together the way it was before.
The instructions are for informational purposes only, as the procedure may differ depending on the car model. Consult your machine's owner's manual for assistance. This is the best visual aid for self-repair.
There is nothing complicated in this work. Even the car owner who prefers to solve most problems with the help of a car service can easily cope with it. Repairs cost several hundred rubles and take a maximum of a few hours.
Thank you for your attention! Subscribe, leave comments, share your own experience in repairs and don’t forget to tell your friends about us! It may also be interesting and useful for them.
Windshield wiper circuit work.
Zero position.
The circuit consists of a fuse F, a three-position switch SA, a permanent magnet motor M and a limit switch SQ. The zero position of the SA switch corresponds to the off state of the vehicle's windshield wiper. If the switch is moved to this position after working, then the electric motor will stop only after the limit switch SQ is opened, which occurs when the wiper blades are in the extreme position.
Closing the electric motor brush with the SQ switch to ground leads to dynamic braking and a sharp stop of the electric motor, which prevents the moment of shutdown and re-supply of power to the electric motor brushes through SQ, which will lead to non-stop operation of the electric motor.
First position.
When switch SA is moved to the first position, power from fuse F through the switch contacts will flow to the motor brush and the drive will operate at low speed.
Second position.
If you turn on the second position, then the additional brush of the electric motor, displaced relative to the negative brush, will receive power, which will lead to a change in the magnetic flux of the armature and an increase in the rotation speed.
Where does which wire go, or just a diagram
Connecting wipers and washer
“Plus” power is supplied from the ignition switch through fuse No. 2 at 10 Amp of the mounting block. The permanent “plus” goes along the black and yellow wires to contacts “4” of the connectors of the gear motor and the steering column switch. It should not disappear even when the switch is in the “off” position. The blue wire supplies “+” 12 V power to the motor when the switch is in “continuous mode” position. On the blue-white wire, in the “off” position there should be a “minus”, and in the “continuous mode on” position the “minus” is turned off. This is done to slow down the motor when the power to the closer is turned off.
The red wire supplies the relay with “+” 12 V from the switch when the intermittent mode is turned on. At the moment of operation, contacts “2” and “4” close, and “1” and “3” open, the motor starts working and the brushes make one or two movements. Then “+” 12 V is turned off, and contacts “1” and “3” are closed to each other and to “minus”. The motor stops for a few seconds and then the cycle repeats.
Schematic diagram of a glass cleaner on a VAZ 2107
- fuse;
- wiper motor;
- windshield washer motor;
- relay and fuse box;
- washer switch (water supply to glass);
- three-lever cleaning speed switch;
- VAZ 2107 cleaner relay. Type RS-514. Its mounting location is under the dashboard on the left, attached directly to the body;
- egnition lock;
The standard wipers on the VAZ 2107 operate in intermittent and continuous modes. If they do not work at all, then first we do the simplest thing: before starting repairs, we check the fuse and the degree of oxidation of its contacts in the mounting block (location F2 for 10 A). The fuse is shared with the washer pump motor. So if the fuse is at fault, then water will not splash on the glass. When changing a fuse, pay attention to the size and color.
If the wipers do not work in rare rain mode, then most likely the relay in the mounting block or the steering column switch itself is to blame. The diagram shows that if there is power on the wire suitable for the relay and the control light is on, or the ammeter deflects the arrow, then the relay is at fault, adjustment will not help, replacement is needed. If there is no current, then there is an open circuit in the steering wheel, and the switch is to blame.
Why did the wipers stop not at the base of the windshield, but “just anywhere”? The gearbox is to blame for this. What should we do with it?
Replacing the gearbox is an alternative, since due to its design, adjustment and repair are difficult, and spare parts are not sold; repair and replacement of its parts (although the size allows) is not carried out, with the exception of the gearbox gear.
How to choose wipers for your car: overview of the most popular queries
Does your windshield not clear after just a few swipes of the wipers? Does it leave dirty streaks and streaks? Does the annoying squeak of brushes make you shudder? All these are clear signs of wear on the working part of the windshield wipers - the rubber plates. They become unusable when exposed to the sun in summer and snow and ice in winter. Run your finger along the elastic - if the edge is jagged or uneven, it's time to think about replacing it.
What do motorists do when they need to replace their wipers? The most inexperienced ones turn to a car service. For example, when undergoing annual maintenance, they are asked to include brush replacement in the list of work. Someone is trying to figure out this issue themselves: reading forums and thematic groups on social networks, looking for advice from “VAZ drivers”, “Solaris drivers”, “Pyzhevodov” and other fellow car owners. They ask which wipers to buy for Solaris, Ford Focus, Kalina, Kia Rio and other models. You can spend all day on the Internet looking for answers. Or you can spend 5 minutes on our article and find out the wiper parameters for your car. We have collected the most popular queries by brand and model. Surely you will find yours among them.
Find out the type of fastening
To install new wipers, you need to know how to attach them to the arm. The most common is a hook . It is used on most domestic and foreign cars, for example, on VAZ models starting from the tenth generation. The same wipers are used on Hyndai, Kia, Toyota, Daewoo, etc. It is important to remember that the hook size may vary. You can remove the windshield wiper and measure it. The most popular sizes: 9x3 and 9x4 mm. Another type of fastening is a pin lock , found, for example, on classics.
Foreign cars have more varied fastenings, because large concerns are trying to make most of the spare parts unique. Here are some of them:
- button – found on Volvo, Renault, Ford, Citroen, VW;
- side pin - present in car models starting from 2005: VW Jetta and Passat, BMW 3, some Peugeot, Volvo, Mercedes models;
- side clamp - found mainly in European models Audi, Fiat, Saab, Opel;
- bayonet lock - found on Renault models since 2004, as well as on Saab models.
These and other mounting options are shown in the images.
Types of wiper mounts
Many manufacturers of car windshield wipers include several fasteners in the kit so that the buyer does not have problems with installation. For example, one set of wipers will fit both Polo sedan and Kalina.
Measuring the length of the brushes
In order for the wipers to clear the windshield from one edge to the other, it is important to choose the right length. If your car has factory wipers, simply measure them with a tape measure. Take the time to measure both wipers, as some car models have different lengths. Typically, the driver's side has a longer brush. If the lengths are different, you will have to buy windshield wipers individually of different sizes. They are the same for many models. For example, the wipers on the Lada Priora are both 51 cm long. You can buy a set of two pieces. By the way, manufacturers indicate the length in centimeters and inches. For example, 17 inches is 43 cm.
What to do if your car has non-factory wipers? This happens when the previous owner of the car installed products that are not suitable in size. For example, if they are too long, then the edge of the rubber gets on the body and rides up - the brush does not fully adhere to the glass and does not clean it at all. And there are also short rubber bands that do not reach the edges of the windshield - dirty stains remain there and dry out with a gray frame. In such cases, it is better to find out the factory parameters of the brushes.
Based on the most popular requests from car enthusiasts, we have compiled two tables in which we have collected examples of car models with recommended parameters for windshield wiper blades. For convenience, we divided them into Russian-made cars and foreign cars.
Table with examples of Russian cars
| Car make and model | Brush length driver side/passenger side, cm | Mounting type |
| VAZ "Kalina", "Granta" | 60/40 | Hook |
| VAZ "Priora" | 51/51 | Hook |
| VAZ 2113, 2114, 2115, 2110,2111,2112 | 51/51 | Hook |
| VAZ 2108, 2109, 21099 | 51/51 | Pin lock |
| VAZ 2101-2107 | 33/33 | Pin lock |
| VAZ-2121 "NIVA" | 33/33 | Pin lock |
| Chevrolet Niva | 51/51 | Hook |
| LADA Largus | 51/51 | Hook |
| LADA Vesta | 60/45 | Hook |
| Lada X-Ray | 65/36 | Lock |
| UAZ "Patriot" | 53/53 | Hook |
The table shows the factory parameters. But many owners of Russian cars replace the standard blades with longer ones, since those installed by the manufacturer do not reach the edge of the windshield. For example, wipers on Vesta can reach 61 and 48 cm for the driver and passenger sides, respectively. It might seem like just a couple of centimeters, but they make a big difference. As motorists note, the cleaning radius increases, and there are fewer dirty streaks on the sides of the windshield. If you want to install longer blades, then measure not the actual length of the blades installed, but the part of the windshield in which the wiper will be provided with free movement.
Repair of wipers on VAZ 2107
Wipers play an important role in the operation of any car. The VAZ-2107 car is equipped with a pair of wipers that clean the windshield when it rains. Operating a vehicle without wipers is strictly prohibited. When your windshield wipers refuse to work, it's time to get them repaired. There are a lot of reasons for the malfunction of windshield wipers, so in the material we will pay attention to the features of repairing these products on a VAZ-2107 car.
Windshield wiper device
Before repairing faulty wipers, you need to understand their design features. The main components of wipers are:
- Electric motor.
- Electric washer pump.
- Circuit breakers.
- Control relay.
- The switch is a three-position switch that regulates the speed of the brushes.
- Brushes.
Actually, this is what cleaning the windshield from rain, dirt and dust in the summer is based on. If the wipers of the VAZ 2107 do not work, then the cause of the breakdown must be sought in one of the listed elements. What are the main types of malfunctions, we will consider further.
Possible windshield wiper malfunctions
The main types of malfunctions include the following reasons:
- the switch has failed, which happens in frequent cases;
- the fuse has blown, which could have happened as a result of an overload of the electric motor, water getting on it or overheating of the wiring;
- poor circuit contact or lack thereof;
- windshield wiper motor malfunction;
- breakdown of the VAZ 2107 windshield wiper relay.
If the breakdown consists of a blown fuse, then replacing it will not be enough; it is also necessary to find the true cause of such consequences. Next, we will consider the main types of wiper malfunctions on the VAZ-2107 with a detailed description of their solutions.
The wipers stopped turning on
If the wipers on a VAZ-2107 do not work in two switch positions, then the reason is most likely hidden in a blown fuse. This element is located on the fuse block and serves to protect the circuit from overloads and short circuits.
Checking the fuse is the first thing you need to start repairing. To check, you should use a tester, or simply exchange it for a known good one of the same rating. In rare cases, fuse contacts may oxidize and need to be cleaned and replaced.
Reasons for wiper failure
There may be several reasons why the windshield wipers of the VAZ 2114 do not work.
The most common of them are:
- Fuse failure.
- Malfunctions in the operation of the electric motor.
- Breakage of the drive trapezoid or its individual rods.
- Broken steering column switch.
The first problem can be solved most simply - you just need to check and, if necessary, replace fuses F16 and F7 (they are located in the common fuse block).
The second reason is the failure of the electric motor (geared motor) driving the device. Such a malfunction is extremely rare, since the electric motor breaks down infrequently, being one of the most reliable elements in the design of wipers.
You can check whether the motor is working properly by disconnecting the rods from it and connecting it directly to the power source. If the rotor does not spin, the gear motor is faulty and should be replaced.
This must be done in the following order:
- disconnect the electric motor from the fuse box;
- put a mark on the rod (crank) in order to fix its position;
- remove the fasteners securing the rod;
- remove the bolts securing the trapezoid;
- remove the gear motor.
Installing a new motor is done in exactly the same order, but in reverse order.
Another common reason why the wipers on the VAZ 2114 stop working is the breakage of the trapezoid. You can determine it visually, and, in case of breakdown, replace the entire unit.
It is not recommended to independently restore a worn or bent trapezoid - it is better to replace it with a new, similar one. This will help maintain the correct balance of the wipers and their correct clamping force.
Sometimes it happens that one VAZ 2114 wiper does not work (or works incorrectly), while the other functions properly. The reason for this may be souring of the bushings at the joints of the trapezoid rods. Fixing such a malfunction is simple - just lubricate all the hinges of the moving mechanism. If the reason that only one wiper is working is because its rod or lever is broken, then, again, the entire trapezoid should be replaced with a new one.
If all of the above reasons for the malfunction of the wipers are not confirmed, then you should check the steering column switch with a tester and, if it breaks, replace it with a new one.
