How to remove the wiper motor of a VAZ 2107

Removing and installing the windshield wiper gear motor - VAZ 2107

Removing the windshield wiper gear motor from a VAZ 2107 car
1. Prepare the VAZ 2107 car for operations (see “Preparation of the VAZ 2107 car for maintenance and repair”).

2. On a VAZ 2107 car, disconnect the wire from the negative terminal of the battery (see “Battery for a VAZ 2107 car - removal and installation”).

3. Using a 10 mm socket wrench, unscrew the union nuts securing the windshield wiper blade arms.

4. Using an open-end wrench or other suitable tool, remove the levers of the windshield wiper blades from the conical splines of the drives. If it is difficult to remove the windshield wiper blades, apply a penetrating lubricant to the splined surface of the drives.

5. Using a 21 mm socket wrench (or a spark plug wrench), unscrew the nuts securing the windshield wiper arm drives.

6. Remove the plastic bushings and rubber gaskets from the wiper arm drives.

7. Disconnect the windshield wiper wiring harness block.

8. Lifting the edge of the seal, remove the windshield wiper wiring harness from the slot in the engine compartment partition.

9. Using a 10 mm socket wrench, unscrew the two nuts securing the windshield wiper gear motor to the body of the VAZ 2107 car.

10. By removing the windshield wiper arm drives from the holes in the body, remove the windshield wiper from the VAZ 2107 car.

11. Using a slotted screwdriver, remove the spring retainer and washer from the wiper rod axis. Disconnect the windshield wiper rod.

12. Using a 10 mm socket wrench, unscrew the nut and remove the crank from the drive splines of the windshield wiper gear motor.

13. Using a 10 mm socket wrench, unscrew the three bolts securing the windshield wiper gear motor to the bracket.

14. Remove the bracket along with the rods.

15. Having unfastened the tensioning belt, remove the dirt cover for the windshield wiper gear motor.

Installing a windshield wiper gear motor on a VAZ 2107 car

1. Before installing the windshield wiper gear motor on a VAZ 2107 car, we wash the rods with levers from dirt. Lubricate the hinges of the windshield wiper arms with grease.

2. Connect the connector block of the new windshield wiper gear motor to the wiring harness block. We connect the wire to the negative terminal of the battery. Turning on the ignition, turn on the intermittent operation of the windshield wipers for a short time. In this case, the windshield wiper gear motor drive will be installed in a position corresponding to the extreme left position of the windshield wiper blades. Turn off the ignition and disconnect the wire from the negative terminal of the battery.

3. Disconnect the wiper gear motor connector.

4. We connect crank A with rod B. Install the windshield wiper lever on the splined drive of the gear motor, orienting it in a position so that the crank and the wiper rod are parallel.

5. Further installation of the windshield wiper gear motor on a VAZ 2107 car is carried out in the reverse order. Before installing the wiper blade drives into the body holes, lubricate the threaded and splined parts of the drives with grease.

If the wiper does not operate intermittently:

• disconnect the positive terminal from the battery;
• remove the decorative panel on the left side of the car, next to the hood release handle. There is a relay under the panel;
• unscrew the two screws securing the relay and disconnect the connector;
• install a new relay;
• putting everything back together;

In this guide, we did not touch on more complex troubleshooting diagrams for the windshield wiper system. Such as replacing the winding and armature of an electric drive or overhauling a windshield wiper gearbox, because this is a more complex task that requires certain special skills. With the modern availability of spare parts, it is easier to replace the entire unit than to repair it.

Removing the trapezoid and replacing the wiper motor on a VAZ 2107

From the instructions we will learn how to independently replace the wiper motor, as well as dismantle the trapezoid.

Of course, most often we need to change wipers when the wiper drive fails. Why does it fail?

The most common reason is if windshield wipers suddenly freeze to the glass during the cold season.

Of course, the wipers will begin to feel a huge load, and this contributes to the fact that the drive begins to break down.

Below is a photo report in which you can learn more about the replacement procedure.

The tools we will need are:

Spanner 22.

Ratchet wrench and socket for ten.

These are all the tools we used while working.

First, unscrew the nuts that secure the wiper arms.

Now carefully bend the lever and remove it from its seat.

Let's take a twenty-two wrench and unscrew all the bolts that secure the trapezoid on both sides of the windshield wiper (right and left).

Remove the plastic inserts.

Next we need to get rid of the rubber seal that is on the hood.

Disconnect the power plug from the motor.

You can get it complete with a wire.

Next we dismantle the motor. We unscrew all the nuts that secure it. By the way, we can access them after we peel back the cover.

To make it more convenient for you, take a ratchet.

Now press on the protrusions of the slots, they are on the other side and the levers are put on them so that they lower inside. Afterwards, the trapezoid can be easily reached by rocking movements from side to side.

This is the result we will get at the end of the work.

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How to replace the wiper motor on a VAZ 2107

1. We prepare the car for operations (see “Preparing the car for maintenance and repair”).

2. Disconnect the wire from the negative terminal of the battery (see “Battery - removal and installation”).

10
mm
socket wrench , unscrew the union nuts securing the windshield wiper arms.

4. Using an open-end wrench or other suitable tool, remove the levers from the conical splines of the shafts. If removal is difficult, apply penetrating lubricant to the splined surface of the axles.

21
mm
socket wrench (or a spark plug wrench), unscrew the nuts securing the shafts of the brush levers.

6. Remove the plastic bushings and rubber gaskets from the shafts.

7. Disconnect the windshield wiper wiring harness block.

8. Lifting the edge of the seal, remove the windshield wiper wiring harness from the slot in the engine compartment partition.

10
mm
socket wrench , unscrew the two nuts securing the gear motor to the body.

10. By removing the lever shafts from the holes in the body, remove the windshield wiper.

11. Using a slotted screwdriver, remove the spring retainer and washer from the thrust axis. Disconnect the rod.

10 mm socket wrench

Unscrew the nut and remove the crank from the gearmotor shaft splines.

10 mm socket wrench

unscrew the three bolts securing the gear motor to the bracket.

14. Remove the bracket along with the rods.

15. Having unfastened the tightening belt, remove the dirt-proof cover of the gearmotor.

1. Before installation, wash the rods with levers from dirt. Lubricate the lever hinges with grease.

2. Connect the connector block of the new gear motor to the wiring harness block. We connect the wire to the negative terminal of the battery. Turning on the ignition, turn on the intermittent operation of the windshield wipers for a short time. In this case, the gear motor shaft will be installed in a position corresponding to the extreme left position of the windshield wiper blades. Turn off the ignition and disconnect the wire from the negative terminal of the battery.

3. Disconnect the gear motor connector.

4. Connect crank A to rod B. Install the lever on the splined shaft of the gear motor, orienting it in a position so that the crank and rod are parallel.

5. Further installation of the gearmotor is performed in the reverse order. Before attaching the brush shafts to the body holes, lubricate the threaded and splined parts of the shafts with grease.

Windshield wiper failure in inclement weather makes further driving difficult. If you continue, there is a high chance of getting into an accident. Most faults can be eliminated on the road, but for some it is better to have more acceptable conditions.

Windshield wiper device for VAZ 2107

The windshield wiper system includes:

• wiper motor VAZ 2107;
• electric glass washer pump;
• fuse box;
• relay;
• three-position switch (located on the three-lever switch);
• windshield wiper blades.

Standard wipers have two operating modes: constant and intermittent. Modes can be changed by changing the position of the switch. Intermittent mode is ensured by the operation of a special relay.

VAZ 2107 windshield wiper malfunctions

Signs of faulty wipers are simple:

• when turned on, the windshield wiper does not work in one mode;
• When turned on, the windshield wiper does not work at all.

There are several reasons for breakdowns:

• switch is faulty;
• fuse burned out;
• poor contact in the electrical circuit;
• The windshield wiper motor is faulty;
• The VAZ 2107 windshield wiper relay does not work.

Note: often a blown fuse is only a consequence of another malfunction - damaged insulation in the motor power supply circuit or a malfunction of the motor itself, as a result of which it begins to consume increased current.

If the wipers stop turning on

When the VAZ 2107 windshield wiper stops working in both positions of the mode switch, you should start looking for the fault with the wiper fuse. It is installed in the electrical network to protect it from overloads that occur during malfunctions, short circuits or increased load on the wiper motor. If the fuse is working, you should check its contacts. Often they are highly oxidized and prevent the passage of current. Cleaning the contacts is simple - you need to remove the fuse and clean the contacts with a knife, screwdriver or sandpaper. Usually these actions are enough, but sometimes the reason lies in a malfunction of the relay, switch or motor. But more on that below.

If the wipers do not work intermittently

This problem is associated exclusively with a malfunction of the VAZ 2107 wiper relay. The cyclic operation of the wipers is ensured by closing/opening the relay contacts and, accordingly, the power supply circuit of the wiper motor.

The test should begin by monitoring the power supply to the relay block. This is done like this:

• remove the relay;
• turn the wiper switch to the intermittent position;
• Use a control indicator to check the presence of voltage at the terminal.

If there is no voltage, it is necessary to replace the switch or repair the open circuit. If voltage is supplied but the relay does not work, the latter must be replaced. The design of the relay does not provide for the possibility of repair.

Wipers on VAZ do not work

The serviceability of windshield wipers directly affects traffic safety.
It happens that the wipers refuse to work in some mode or do not turn on at all. Why? Windshield wipers of all cars have at least two operating modes - intermittent and constant. For convenience, this list also includes additional options, for example, a slow speed of a constant mode, one stroke for quickly cleaning the glass, and so on, right down to adjusting the pause between strokes.

Technically, this is all quite easy to implement: the intermittent mode creates an electronic or mechanical relay paired with a switch inside the electric motor, and with the constant movement of the brushes, voltage is constantly supplied to the same electric motor. Let's look at typical windshield wiper malfunctions and methods for finding them.

Wipers do not work intermittently

As mentioned above, the breaker relay is responsible for the intermittent operation of the wipers. It can be mechanical (on older cars) or electronic. Accordingly, if the wipers work in constant mode (which is created by bypassing this relay) and do not work in intermittent mode, there is a reason to check the relay.

However, before starting the test, you need to make sure that the relay is receiving voltage from the steering column switch set to the intermittent mode position. It may well be that the malfunction lies in it, and not in the relay. In the steering column switch, in particular, the corresponding contact may oxidize or the wire connecting it to the relay may break.

Based on this, you need to find a wiring diagram for the wipers on your car and check whether current flows from the switch to the relay. If not, look at the switch. If there is current, check the relay.

Wipers do not work constantly

When the windshield wipers work great in intermittent mode, but refuse to move constantly, you can immediately talk about a malfunction in the same steering column switch or problems in the area between it and the wiper motor. Simply put, the voltage from the switch is not supplied to the motor. You also need to check this electrical circuit with a multimeter or a test light to make sure that all terminals are clean and securely fastened.

The wipers don't turn on at all

If the windshield wipers do not react at all to the steering column switch, you should start with a classic check - make sure the fuse is intact. If it is intact, you need to check the steering column switch for voltage supply to it and correct closure of the contacts inside. Most likely, there will be no voltage on it.

A special case of complete failure of the wipers is when they are blocked by something. This could be a wrench left under the hood, a rag, or frozen wiper blades (read what to do if your wiper blades are frozen). For such situations, a special fuse is usually installed in windshield wiper systems. This device saves the wiper motor from overheating and failure by turning off the power. In the simplest case, such a fuse is a heat-sensitive plate that, when heated, changes shape and opens the contact. After turning off the voltage, it returns to its previous position and you can use the device (in this case, the wipers) again.

When the wipers are blocked, they usually still move at least a little from their “parking” position. Therefore, if there is still a slight reaction to switching on, check the freedom of movement of the brushes and trapezoid. Most importantly, do this with the wipers off.

! Accidental activation of the windshield wiper can cause serious injury!

The pause between strokes is not adjustable

If your car has the ability to adjust the pause between wiper sweeps and this function stops working, the adjusting resistor is most likely to blame. This part, depending on the rotation of the knob (or wheel), changes the resistance value in the wiper relay circuit, due to which it is possible to adjust the pause. This resistor should be replaced.

By

If the wipers do not stop at the lowest point

Sometimes when you turn off the wipers, the brushes stop not at the lowest point of the trajectory, but in another arbitrary place.
The problem lies not in the VAZ 2107 wiper relay, but in the drive gearbox. It contains a limit switch actuated by a cam. The operation of the cam controls the position of the brushes after turning off the power on the switch lever. Gearbox failure most often occurs in winter, when the driver turns on the wipers that are frozen to the windshield.

To replace the gearbox, you must dismantle it along with the engine and install a new one.

Removing the gearbox and wiper motor of VAZ 2107

To perform the work, you will need open-end or socket wrenches for 10 and 22. The procedure is as follows:

• Use a 10mm wrench to unscrew the nuts securing the wipers;
• remove the VAZ 2107 wipers from their seats (you must first bend them);
• Using a 22mm wrench, unscrew the trapezoid fastening of the windshield wipers and remove the plastic inserts;

  

• remove the rubber seal in the engine compartment;
• disconnect the power terminals of the windshield wiper;
• pull out the power cord from the hole in the car body;
• unfold the plastic protective cover installed on the wiper motor;
• Using a 10mm wrench, unscrew the nuts securing the wiper gearbox to the body;
• remove the wiper gearbox and the bracket with rods from the installation site (first you need to press the protrusions of the levers inward so that they fall through);
• unscrew the nuts securing the trapezoid to the gearbox and securing the gearbox to the crank;
• disconnect the wiper motor.

After this, you can repair or replace the faulty parts and install the wiper structure in place by performing the operations in reverse order.

VAZ 2107 wiper malfunctions

Replacing a burnt out motor

During the winter season, at sub-zero temperatures, wipers often stick to the windshield. The wiper motor is under a lot of load, and it burns out if the bimetallic fuse does not work or the fuse burns out.

Location of the glass cleaner and washer fuse in the mounting block

In such cases, it is necessary to replace the motor. To do this, you need to remove all the parts in a certain order:

• Unscrew the fastening nuts;
• bend the lever and remove it from its seat;
• Using a 22mm wrench, unscrew the trapezoid fastenings on both sides;
• remove the plastic inserts;
• remove the hood seal;
• remove power from the windshield wiper motor;
• remove it with the drive from the hole in the body;
• bend the protective cover, unscrew the fastening nuts;
• press on the protrusions of the slots on the reverse side, on which the wiper arms sit, so that they fall inward, move in different directions, the trapezoid with the motor will come out.

Video instructions for replacing the windshield wiper trapezoid

Modification of the windshield wiper relay for VAZ 2107

The wipers of the “Seven” do their job perfectly in heavy rain. Problems arise during drizzling rain, when selecting a suitable operating mode becomes a problem. As a result, the wipers rub against dry glass, the rubber bands wear out intensively, and the glass can be scratched. To avoid this, the driver has to constantly turn the wipers on/off manually, which distracts from driving.

You can modify the VAZ 2107 windshield wiper relay by expanding the range of adjustment of the frequency of operation of the wipers.

First you need to remove the relay, which is located in the cabin near the hood opening lever. To remove it, you need to unscrew two screws and disconnect the block.

Next, it is necessary to replace and modify the resistor responsible for the pause between switching on the wiper motor.

A 62 kOhm resistor installed on the relay board provides a 4 second turn-on interval. It should be replaced with a resistor of half the resistance, which will provide a minimum pause between switching on of 2 seconds. But it should be soldered onto the relay board with only one leg.

In the resulting circuit break, it is necessary to solder wires with a variable resistor of 100-500 kOhm (one of the wires going to the variable resistor must be soldered in place of the second leg of the “native” resistor, and the second one must be soldered to the unsoldered leg of the constant resistor.

After connecting the variable resistor, close the relay cover by gluing it in place. This will protect the contacts and printed circuit board from oxidation and damage.

The wires going to the variable resistor must be of sufficient length so that they make it possible to install the variable resistor in a place convenient for the driver, for example, on the dashboard of the “seven”.

After installing a tuned wiper relay, it becomes possible to adjust the interval between turning on the wiper motor from 2 to 8-10 seconds. Thanks to this, you can select the optimal mode corresponding to the intensity of rain.

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.

Windshield wipers do not operate in intermittent mode

If a situation arises in which the wipers do not function in interrupt mode, then the breakdown should be looked for in the wiper relay. The cyclic operation of the products is ensured by closing and opening the contactor of the control relay. To check, we try to supply power to the relay block. In practice it looks like this:

1. the relay is removed;
2. use the switch located near the steering wheel to turn on the wiper switch;
3. Using a tester, you need to check whether there is voltage at the terminal.

If there is no power, the switch needs to be replaced. The reason may be a break in the control circuit, so it is necessary to find and eliminate this defect. If there is power, but the relay does not operate, then it needs to be replaced. The relay cannot be repaired, so it only needs to be replaced.

The electric motor of the cleaner does not function

If the electric motor does not work, but there is voltage at its contacts, then the problem is in the device itself. This could be wear on the brushes or failure of the windings. The brushes wear out over time, and the winding fails when the motor is overloaded. These products can be repaired, but for this you need to contact a workshop.

The wipers do not reach the extreme point

Often, owners of domestically produced cars are faced with a problem when, when turning off the wipers, the blades stop at the point where they were, that is, they do not return to the lowest position. The problem with such incorrect stopping of the brushes is directly in the drive gearbox. The gearbox is equipped with a limit switch, which is activated by a cam. The cam is designed to control the position of the brushes after the power to the switch lever disappears.

A breakdown occurs mainly when the driver turns on the windshield wipers that are frozen to the glass. As a result, the gearbox fails and must be replaced with a new one.

Refinement of wipers

When it rains heavily, the seven's windshield wipers work perfectly (in constant mode). The disadvantage is the fact that during light rain (intermittent mode), the brushes can rub idle, wearing out and scratching the glass. This occurs due to a non-optimal pause between swings. This problem can be solved by modifying the wipers. We will find out further how to modify the wipers on the VAZ-2107.

Modification of the VAZ 2107 wipers consists of changing their operating frequency, or the possibility of its smooth adjustment.

• Initially, you need to remove the relay, which is located in the cabin, near the hood opening lever.
• It is necessary to remove the relay cover and replace the installed 62 kOhm resistor with another one whose resistance is 30 kOhm. This will reduce the wiper response interval from 4 seconds to 2 seconds.
• The resistor is soldered to the board on one side only.
• It is necessary to solder wires into the circuit break that will connect to a variable resistance from 100 to 500 kOhm.
• Once the wires are soldered, the relay can be assembled and installed in place.
• The device in the form of a variable resistor must be placed in a convenient place on the control panel, since it will be used to switch the operation of the brushes.
• This connection diagram allows you to select the optimal mode of operation of the windshield wipers in the range from 2 to 10 seconds.