How to change and check the wiper motor of a VAZ 2109 with your own hands?

How to remove

First of all, it is necessary to de-energize the system. To do this, simply disconnect the negative terminal on the battery.

set the wiper arms to a vertical position;
unscrew the nuts and remove them from the rollers;
remove protective caps;
twist the nuts (one on each side) securing the brackets at the top;
dismantle the rubber sealing washers;
in the engine compartment, remove the wiring harness from the connector;
unscrew the bolts holding the lower part of the bracket;
the mechanism rollers are removed from the holes;
unscrew the nut securing the windshield wiper crank and remove it;
dismantle the bolts holding the wiper gearbox and the motor in place;
disconnect the wires from the bimetallic fuse and remove the engine from the bracket.

All that remains is to remove the locking ring and adjusting washers from the gear shaft and install a new motor.
Assembly is carried out in reverse order. To make it more convenient to work, we recommend moving the stove fan slightly to the right. Without this, it will not be possible to remove the windshield wiper. You will also need to remove the fuse box cover and all the relays located there.

The windshield wiper itself must also be moved slightly to the left before removal.

It is better to number the adjusting washers so that they are not confused during assembly.

Complete disassembly of the windshield wiper trapezoid and its repair:

When repairing the windshield wiper trapezoid, do not, under any circumstances, if you do not have the appropriate experience, remove the armature shaft adjustment screw. When it is turned out, the axial clearance at the shaft is violated!

1) First, use a wrench to unscrew the nut that secures the trapezoid crank.

2) And then remove the crank by prying it up with a screwdriver.

3) Now, picking up the wrench again, unscrew the three bolts that secure the motor-gearbox to the bracket.

Replacing the windshield wiper trapezoid with your own hands, without removing the fuse box.

trapezoid replacement process

with your own hands in three and a half minutes.
VAZ 2109
car . my DRIVE 2.

VAZ 2114 replacement of trapezium wipers

4) When the three bolts are unscrewed, use a screwdriver to unscrew the two screws that secure the wires to the fuse, and then disconnect them.

Disassembling the gearbox

If the wiper does not work due to contamination of the gearbox, then it will not be difficult to clean it. But under no circumstances should you unscrew the adjusting screw installed in it - otherwise you will most likely not be able to properly restore the armature clearance later.

The procedure is as follows:

remove the protective panel from the gearbox;
remove the gear;
take out the cage nuts, having first unscrewed two bolts;
The gear housing is disconnected together with the brush holder from the motor;
the anchor is removed and cleaned with a compressor.

Removing the rear wiper generally follows the same algorithm, but you will also have to remove the door trim to get to the wires and other elements.

Disassembling the electric motor of the windshield wiper VAZ 2108, 2109, 21099

Let's disassemble the windshield wiper electric motor that was previously removed from the car.
This will have to be done if it needs repairs. For example, replacing a licked gearmotor gear, cleaning limit switch contacts, replacing brushes or an electric motor armature, etc.

Required Tools

— Keys for “10” and “13”

Disassembling the electric motor of the windshield wiper VAZ 2108, 2109, 21099

— Disconnect the crank mechanism (levers) from the wiper motor

To do this, use a key set to “13” to unscrew the nut securing it and remove it by sliding it off the axis.

— Disconnect the wiper motor bracket

Using a “10” wrench, unscrew the three nuts securing the bracket and remove it.

We disconnect the crank and bracket of the electric motor of the windshield wiper of VAZ 2108, 2109, 21099 cars

— We disassemble the purifier gear motor

Using a Phillips screwdriver, unscrew the three screws securing the protective cap of the gearmotor and remove it.

We remove the protective cap of the windshield wiper gearmotor of VAZ 2108, 2109, 21099 cars by unscrewing the three screws securing it

Disconnect the lock washer of the gear motor gear shaft. We pry it off with a screwdriver and remove it. We also remove the two washers under it.

Remove the lock washer from the gear motor gear shaft and two simple washers under it

Using a Phillips screwdriver, unscrew the screw securing the wire clamp and remove the gear motor cover.

Remove the cover of the windshield wiper gear motor and take out its gear

We remove the gear motor gear.

— We disassemble the windshield wiper motor housing

Using a Phillips screwdriver, remove the two screws securing the motor housing to the gearmotor. Remove the screw retainers. Remove the housing by sliding it back. If necessary, we replace faulty parts (brushes, armature) with new ones or known good ones.

Disconnect the electric motor from the windshield wiper gear motor and disassemble it

We assemble the windshield wiper motor in the reverse order. When assembling, there are some features without knowledge of which it is not possible to produce it properly. One such feature is described in the notes and appendices.

Notes and additions

— When assembling the windshield wiper electric motor of VAZ 2108, 2109, 21099, it is necessary to install the brush levers in their original position. To do this, we connect the block of wires to the electric motor, turn on the ignition, turn on the windshield wiper with the steering column lever and wait until it stops. Turn it off. We fasten the crank in this position.

Motor repair

Many people think that replacing the motor with a similar one from a foreign car can solve the problem with the slow operation of the wipers, but in fact, it is often enough just to clean and lubricate the “original” engine.

If the speed of operation causes complaints, then it is necessary to check how easily the armature rotates: if movement is difficult, damage or excessive wear of the brushes should be suspected. They are easy to replace with new ones.

Cleaning the collector will also help - this will require fine sandpaper. The need for this procedure is said:

visible contamination;
noticeable scratches;
grooves on the metal.

How to change the wiper motor on a VAZ 2114

A gear motor is a conventional electric motor capable of operating in different modes. In the case of the windshield wiper, it has 3 operating modes: Intermittent, 1st speed, 2nd speed. Also, the gear motor has a built-in bimetallic fuse, which is located either on its body or inside.

It is necessary to dismantle the gear motor for its replacement and maintenance:

brushes,
fuse;
for removing the trapezoid.

Signs of a dead gear motor: If possible causes are discovered, do not rush to change the gear motor! First, check out the other possible causes of the malfunction by clicking on the link.

How to remove the windshield wiper gear motor?

To remove the gear motor, we only need to unscrew 4 fasteners!

But there are two nuances:

not convenient location;
you need to remember the position of the crank.

The crank is a curved rod from the motor to the trapezoid rods. If you do not install the crank correctly, there is a high probability of damaging the teeth on the new motor.

Open the hood, disconnect the wiring block from the fuse block to the gear motor.
We remember (indicate with a marker) the position of the crank.
We unscrew the fastening of the crank to the engine with a key set to “13” and remove it.
Using a “10” wrench, unscrew the three bolts securing the gear motor to the trapezoid.
We take out the gear motor.

If the gear motor cannot be pulled out, unscrew the fastenings of the fuse block and move it away.

How to install a gear motor?

Before installing the gear motor, you need to make sure that the motor shaft is in its original position. To do this, without installation, we connect the wire block to the new motor and temporarily turn on the intermittent operation of the wipers. After stopping the motor, the shaft will be in its original position.

After this, disconnect the block and install the motor taking into account the position of the crank mark.

Connection diagram

If you encounter any difficulties, this diagram will help you figure out what you are doing wrong.

wiper gearbox (1);
thermobimetallic fuse (2);
motor (3);
washer valve (3);
mounting block (4);
ignition switch (5) and relay (6);
switch (7);
K3 front wiper relay (8);
“A” – the contacts of the wiper pads are marked;
“B” – output to pin 30 of the generator terminal;
a – second speed;
b – first;
c – switch spring;
d and e – his contacts;
noise filtering capacitors – C1, C2;
chokes – L1, L2.

Replacing the trapezoid and the wiper motor (windshield wipers)

The design of the trapezoid on VAZ 2109-2108 cars is quite reliable and it is almost never necessary to replace it, or only in exceptional cases. But you will need to remove it if you need to replace the wiper motor. This part fails much more often. Carrying out this repair yourself is quite simple and for this work we will need the following tool:

open-end or socket wrench 24
socket head 10
extension
ratchet
flat screwdriver

Windshield wiper motor VAZ 2109, VAZ 2108, front

Dear customers, in order to avoid errors when sending a windshield wiper gear motor, please indicate your car model and year of manufacture in the “Comment” line.

The windshield wiper drive motor is most often replaced by the following terms: wiper motor, wiper motor (electric motor), gear motor drive, wiper motor, wiper gear motor, windshield wiper. Therefore, if you hear these terms, then know that we are talking about the same thing.

The electric motor of the wiper mechanism is designed to drive the windshield wiper arm system. The electric motor is installed in a niche under the windshield and is connected by a shaft to the windshield wiper lever system. Power supply and control of the operating modes of the electric motor are carried out using a standard connector. The motor and gearbox are made in a closed housing with protection from dust and atmospheric moisture entering the electrical parts and mechanisms of the electric motor.

The windshield wiper consists of a gear motor, levers and brushes. The electric motor of the cleaner is three-brush, excited by permanent magnets. To protect against overloads, a thermobimetallic fuse is installed in it, and capacitors and chokes are installed to reduce radio interference.

Technical characteristics of the windshield wiper gearmotor 2108-3730000 : – Rated voltage 12 V;

– Rated power 10 W;

Why do the wipers on the VAZ 2109 work slowly?

Are you faced with the fact that your VAZ-2109 wipers are working slowly? It doesn’t matter, this problem haunts many motorists. A careless mechanism, which only yesterday worked like a clock, has a stupid habit of slowly and inexorably breaking down. This unpleasant feature of cars of this brand has already managed to annoy all owners of the VAZ model 2109, if you believe the reviews of the majority of domestic motorists.

There can be a huge number of reasons for this, and it is not always due to driver negligence. Windshield wipers often fail due to banal technical imperfections in the design of everyone's favorite VAZ. But you shouldn’t scold the manufacturers prematurely and go to a car service center. Speeding up a worn-out mechanism with your own hands is simple and anyone can do it.

Common causes of malfunction

Why did the wipers start working slowly? This question is asked most often among VAZ owners. It just so happens that almost all cars of the 2109 model suffer from this disease. So why do the wipers not work? Why does the system wear out so quickly? Below is a list of the most common windshield wiper problems:

Damage to system levers. Even a slight change in the shape of these parts can affect the speed of the mechanism.
Faulty power cords. If there is not enough electricity supplied to the system, it is no wonder that it will slow down.
Foreign objects in the mechanism. Any pebble or blade of grass that accidentally gets into the device can cause serious damage, not to mention slowdown.
The blades are frozen to the windshield. In winter, you need to pay especially close attention to the mechanism if you do not want to tear off its frozen parts from the glass.
Short circuit in the winding or excessive contamination of parts. The structure must be carefully monitored; it must be cleaned from time to time and the winding changed if necessary.

But all these malfunctions most often have nothing to do with the slowing down of the windshield wipers on the car. Experienced car owners have long figured out what the true cause of windshield wiper failure is. Most often, the reason is that drivers do not take good care of their car. The VAZ needs especially close attention due to its design.

Let's start the renovation

Our instructions are suitable for the VAZ 21099 repair and replacement of windshield wipers. The windshield wiper mechanism on the VAZ 2109 and other models is removed if a complete replacement is necessary (if they are completely out of order), for repairs or to perform other work when its presence interferes with the progress of their implementation. You will need a set of open-end wrenches and a set of screwdrivers to repair the windshield wipers on a VAZ 2109 yourself, proceed in the following sequence:

Disconnect the negative battery terminal wire
We turn both levers of the wiper blades to a vertical position, unscrew the nuts securing them
Remove the blade arms from the windshield wiper rollers

Unscrew and remove the windshield wiper arms

Note: If suddenly you cannot remove the lever by hand, unscrew the nut securing the wiper arm, but not all the way, to avoid damaging the thread.

Using pliers (pliers), pull the lever off the slots, then completely unscrew the nut. Remove the windshield wiper arm.

Remove the protective caps, one on each side.
Unscrew one nut from the upper bracket mounting on both sides
Remove the special leveling rubber washers located on both sides
Open the hood of a VAZ 2109 car, disconnect the connector with wiring from the block
Then we move the heater fan to the right side along the compartment located in front of the windshield; if this is not done, the fan will interfere with us, remove the windshield wiper.
Remove the cover from the fuse and relay box
We remove all the relays from the mounting block: since they interfere with the removal of the wiper

Disconnect the connector from the block. We take out all the relays so as not to interfere with the removal of the wiper

Unscrew the lower mounting bolt from the wiper bracket.
Squeeze the plastic wire holder and remove it from the slot in the body
Remove the holder from the wires so as not to lose it
We remove the rollers of the wiper mechanism from the holes located in the body
We move the windshield wiper so that its motor is in the wide part of our compartment located in front of the windshield (this is where the heater fan is installed)
We turn the windshield wiper and remove its motor from the compartment
Move the wiper towards the fuse and relay box
We take it out of the compartment
Unscrew the nut securing the crank of the wiper mechanism
Remove the crank from the wiper gear shaft by prying it off with a flat screwdriver

Using a flat screwdriver, remove the crank from the gear shaft

We unscrew the three bolts securing the wiper gear with the electric motor
Unscrew the two screws securing the windshield wiper motor wires
Disconnect the wires from the bimetallic thermal fuse
Remove the windshield wiper motor from the bracket
Then remove the retaining ring from the wiper gearbox shaft
Remove the adjusting washers from the gearbox shaft

Tip: Be sure to mark all the adjusting washers so that when assembling the windshield wiper mechanism, install them in the same quantity and in their original places

Unscrew the three screws securing the wiper gearbox cover
Removing the gearbox cover

We unscrew the screws (there are three of them), they are indicated by arrows, to remove the gearbox cover

Warning: When disassembling the windshield wiper gearbox, do not unscrew (do not touch at all) the adjusting screw (in the photo above it is marked in red) otherwise you will violate the axial clearance (it is adjusted at the factory) of the armature shaft.

Remove the panel from the wiper gearbox
We take out the gear of the wiper gear
Unscrew two screws (the second is located behind the wiper gear housing) and remove two cage nuts

Unscrew the screws and remove the cage nuts

Remove the wiper gear housing from the electric motor housing along with the brush holder
We remove the armature from the wiper motor housing
After disassembling the electric motor, we blow through the housing with compressed air in order to remove coal dust from it.
Remove the retaining rings from both rollers of the wiper mechanism
Then remove the adjusting washers from the two rollers of the windshield wiper mechanism.
We remove the rods from the bracket and remove the adjusting washers from both rollers
We remove the O-rings from the special grooves on both sides of the bracket.

It is impossible to further disassemble the trapezoid system; its rods have a completely non-demountable design (photo below):

1 – crank designated
2 - short wiper rod
3 — linkage joint
4 is the wiper mechanism roller
5 - long pull

Non-removable design of wiper rods

We check the brush springs; if the electric motor brush springs are damaged or have lost their elasticity, replace the brushes with new ones
Checking the ease of movement of brushes in the brush holder
We replace worn or chipped brushes; they should move freely and without jamming
Solder the leads of the new brushes (when replacing) to the brush holder

We check the elasticity of the springs and the smooth movement of the brushes themselves

We clean the collector with fine sandpaper if it is dirty or if there are marks, scratches, etc.
If the collector is badly worn or burnt, replace the armature or gearbox assembly with the electric motor
Having found traces of jamming on the anchor journals themselves, we clean them with fine sandpaper

The armature journals are indicated by arrows, check the condition of the journals and commutator

We replace an electric motor gearbox with broken or heavily worn teeth
We straighten the bent wiper arms. If it is impossible to straighten them, replace the entire windshield wiper trapezoid
If damage to the splines or roller threads is detected, replace the entire wiper trapezoid
We clean burnt or oxidized contacts of the self-stopping mechanism using fine sandpaper.
We replace torn, lost elasticity or cracked rubber cushions and other rubber parts

What is a windshield wiper trapezoid and what is it for?

The trapezoids are around here somewhere!

The wiper trapezium is a special unit that converts the engine impulse into forward movements of the windshield wipers.

Simply put, it is she who is responsible for their movement along the windshield or rear window of the car. Since weather conditions are often unpredictable, and the windshield must provide complete visibility, failure of this part must be quickly identified and corrected.

Principle of operation

Most often, plastic bushings wear out in trapezoids.

Although, at first glance, it seems that the movement of the brushes occurs directly, in fact, a trapezoid, which is an electromechanical unit, is responsible for it. It works on the following principle:

The windshield wiper motor uses the finger, which drives the trapezoid itself.
Due to the connection of the gearbox and shafts, oscillatory movements occur, causing the brushes to move along the glass, cleaning it.

It often happens that the trapezoid fails. This happens especially often after or during the winter season. Some inexperienced VAZ-2110 owners turn on the “brushes” without bothering to clear the snow from the glass . Often the wipers freeze to the glass, and an attempt to move them ends in breakage. To prevent this from happening, you should always check the brushes before turning them on in winter for freezing .

Technical characteristics of the gearmotor

Shaft rotation speed at supply voltage 14 V,

moment 0.15 kgf.m

and ambient temperature 25±10°С, min –1

Current consumed under these conditions, A, no more than:

at first speed

at second speed

The purifier has three operating modes, they are activated by the right steering column switch.

Intermittent mode is provided by an electronic relay K2 type 524.3747 installed in the mounting block. This relay also turns on the wiper motor at low speed when the windshield washer is turned on.

The relay must ensure that the electric motor is turned on with a frequency of 14±4 cycles per minute at a gearmotor shaft speed of at least 20 min -1, a temperature of 20±5°C and a supply voltage of 14±0.2 V.

When the cleaner operates at low speed in constant mode, the supply voltage is supplied to diametrically opposed brushes.

When the cleaner operates at maximum speed, “+” power is supplied to the brush located on the side.

To relieve the load on the contacts of the ignition switch, the cleaner is connected through an additional relay K6 in the mounting block.

It is recommended to replace a faulty gearmotor with a new one (cleaning the commutator, limit switch contacts and replacing gears is possible).