Car windshield washer motor: operating principle, possible malfunctions and replacement instructions

Windshield Washer Motor - Part,subject to wear more due to frequent use. Moreover, this element should always be in good condition, because road safety often depends on it. If you are suddenly splashed oncoming car, visibility will deteriorate sharply.

The device and the principle of operation

The windshield washer is used to clean andwetting the surface of the glass, which when driving must be clean. In the summer, insects are smashed against a frontal motion when driving at high speed, and in winter it gets dirty with dirt emitted from the wheels of other cars.

Structurally, the washer consists of the followingparts: a tank in which there is water or a chemical agent, a pump that pumps out the liquid from the tank, pipelines and nozzles. With the help of the last liquid is fed to the glass. The nozzles are oriented so that the water falls into the middle of the glass. The pump creates the necessary pressure, pumping fluid through the hoses to the nozzles. Washer is for the windshield, rear and headlights. Structurally, they differ only in the arrangement of the injectors and the length of the hoses.

Washer pump device

It is an electric motor with impeller or workingwheel on the output shaft. All these elements are combined in a compact housing with inlet and outlet fittings. Different models may have a different detail. However, the principle of operation is the same for everyone - pumping fluid from the tank and feeding it to the injectors, and then - on the glass.

Most frequent washer breakdowns and causes

About problems with a motor in the first placeindicates the lack of fluid supply. It should be noted that traffic safety depends on the purity of the glass. The most common damage may be the following:

• clogging of the nozzles or filter, as a result of which the necessary pressure is not created;
• violation of the integrity of pipelines - water just does not reach the nozzles, and its level is constantly falling;
• faulty motor windshield washer - can not hear the characteristic hum when you press a button;
• short circuit, blown fuse, open circuit;
• wear of the working impeller in the little engine, its corrosion - it occurs due to scale and deposits in the tank.

Trouble-shooting

Any troubleshooting should begin to find out the reasons. Diagnosis in this case is carried out from simple to complex. First see the supply fuse.

If it burns out again, you should look for the cause.short circuit. Then it is checked whether the motor itself works on the glass washer. If it works, and there is no liquid from the injectors, then the pump is faulty, or the liquid does not reach the injectors. If the motor is silent, it must be removed for repair or replacement.

Replacing the motor

The element is usually installed on the tank itself.Thus, the replacement of the windshield washer motor is reduced to the removal of the tank. It should be noted that on some car models the pump is quite easily removed from the tank, without requiring removal of the latter.

But this is not always possible, as access to it is often difficult.

Washer reservoir location

In most cases, the washer tank is locatedunder the hood, but that's where the similarities end. Many modern manufacturers tightly assemble the engine compartment, which is why we have to use literally every cubic centimeter of volume. In some cars, the washer reservoir is located in the vicinity of the A-pillar, on the left or on the right, and in others (especially the last years of production) - in the front, in the bumper area. Used niche between the wheel and the front beam. In the first case, the liquid is poured through the neck directly into the tank. In the second - through a special filling pipe. The first option can be considered on the example of the removal of the tank VAZ. This is the easiest option.

Removal of the pump VAZ

Tank and glass washer motor (VAZ 2107 inincluding) is in direct availability. Depending on the model, it is located on the right or on the left. Before removing the pump, it is necessary to disconnect from it the electrical wires and the hose leading to the injectors. The windshield washer motor is of a vertical type and is inserted into the container by the inlet fitting. There it is tightly fixed, and a special sleeve prevents water from leaking.

Often, it is because of its leakage that no fluid is supplied to the windshield. As a second example, you can see how the Opel Astra car removes the glass washer motor.

Motor "Opel Astra": dismantling

Here, the removal procedure is much more complicated.Due to the fact that the tank is deep down, you will need to remove the front bumper or the front wheel liner. After that, you can get the capacity itself. It is usually fastened with three bolts. The rest of the procedure for removing the pump is the same.

Washer pump disassembly

Как уже говорилось, обычно элемент выполнен non-separable and subject to complete replacement. However, in some cases, the pump can be disassembled for preventive maintenance. The case itself consists of two halves. At the top is a motor, in the bottom - the impeller with intake and outlet pipes. The most common cause of failure mechanism is the ingress of water into the engine and subsequent rapid corrosion. Here, in some cases, rust can be removed and restored to its working capacity. A motor on a glass washer sometimes stops working due to the erasing of conductive brushes. If the design allows, they can be cleaned, and sometimes even replaced. Also, the cause of the malfunction is jamming of the output shaft of the motor due to wear of the sleeve, or impeller failure. Here, most likely, only a replacement will help.

Features of the mechanism for the rear window

On cars with a body hatchback and wagonrear window wipers are installed, because of the characteristics of aerodynamics, it pollutes very quickly. For the washer is set a separate tank with its own motor in the rear of the car, closer to the glass. Sometimes put a tank of increased size under the hood. A second pump is also provided here — specifically for the rear window.

Жидкость подается через весь автомобиль к задней parts. Rear window washer motor is used exactly the same as for the windshield. Diagnostic and repair methods do not differ from each other. You can determine the damage without additional devices.

How to avoid pump breakage?

First, the windshield washer motor should never be idle. Since it works in water, its body is cooled during operation.

In the absence of washing fluid, it willspin dry and quickly overheat. This is fraught with burning of the windings and jamming of the motor, followed by replacement. Secondly, you can not allow the motor to work too much time. It is better to turn it on often, but not for long, no more than two seconds. Often this is enough to knock down or soak up the dirt, which the janitors will then brush off.

Conclusion

As you can see, the motor windshield washer -small but extremely important part of the car. Rapid diagnosis and repair of this site along the way will significantly save time and improve traffic safety.