The power windows is called the device for lifting the side windows, which is equipped with an electrical drive. Power windows can be attributed to comfort systems, as they provide passengers and driver additional amenities while lifting or lowering the glasses of side doors. To date, power windows actually completely displaced mechanical options that use manual drive.

Power windows, device

The power windows are mounted inside the door housing, on the body itself or on a separate subframe. It consists of a control system, a lifting mechanism and drive mechanism.

The gearbox (drive mechanism) is made as a single block. It combines toothed gear, worm gear and electric motor. Its purpose is to create an effort required for moving glass. The use of worm transmission in the mechanism protects against unresolved opening of the window. The transmission of rotation in the worm gearbox is performed only in one direction - to the wheel from the worm. During an attempt to rotate in the opposite direction, the transfer is carried out.

The climb mechanism serves to directly move the glass. There are several types of windows depending on the design of the lifting device - wheels, lever and cable. In the design of modern vehicles, the most required lever and climbing mechanisms.

The cable power window is a flexible element (chain, a toothed belt, cable), which is stretched inside the door between several rollers. Movement flexible element is fed through the drive drum. During the rotation of the drum, one branch of the flexible component is wound and the other is wound, and the component itself receives a translational movement. The flexible element is connected to the glass with a plate.

The lever windows combines the fastening plate of the glass, the slider, installed on the end of the lever and lever. To ensure uniformity of movement, the lifting mechanism can be both one and two levers. Rotation from the drive mechanism and the sector is applied to the wheel, which are located in the clutch with the lever and ensure its movement. Some double-hand structures have two wheels.

The rack mechanism of lifting is folded from the guide plate, which is connected to the glass and with a fixed gear rail. Also on the plate is a drive mechanism, the gear from which is located in the grip with a toothed rail and moves the glass. Moving the glass in the desired direction provide such guides - rails in the door housing, gutter in the door frame.

Electrical windows have electronic or direct control:

1. Direct control of the power windows occurs using a three-position switch, which is included in the power supply circuit. During the movement of the switch to the first position, the motor rotates in one direction, while moving into the second position - the polarity change is performed and the change in the direction of rotation of the motor. This type of windows has a rather limited application due to trauma.
2. Electronic power window control has a design comprehensible, including an actuator, an electronic control unit and input devices. Input devices include glass position sensors and operating mode switch. Electronic control systems also use three-position switches. On the driver's doors (the center console, the control panel), the switch of the switches is installed, with which it is possible to control the windows of all doors and manage the windows.

Assistant tools

To replace the engine reducer motor:

1. Crosshead screwdriver.
2. Split screwdriver.
3. The end key (or cape) by 10.
4. Heating (or Scotch).

How to remove the power windows, the phased course

To dismantle the power windows should:

1. First of all, we remove meals from the battery.
2. Then remove the door trim, for which we unscrew the four screws using a cross screwdriver. One of them is located in the knob, and others in the lower door.
3. Next, you need to remove the frame (facing) of the inner handle door. To remove this frame, experts advise apply a screwdriver. But in practice it turned out that this is not grateful, as they remain scratches and burst on the facing itself and on the door trim. In addition, after such a removal, the facing is often bursting. Therefore, a more troubled and effective method for removing the decorative lining of the inner handle of the vehicle was found. To begin with, it is necessary to disrupt the door weathe engagement from the fastening plastic locks, and it follows from the bottom. When you remove the trim from all the locksters, it must be pulled over and lining effectively and easily departs from its landing place. Now you have only a little lift the trim up and pull on yourself to finally dismantle the door trim.
4. After that, you need to unscrew the screws of the armrest bracket and remove the protective film.
5. Next, you must disconnect the power winding engine control wires.
6. Then we unscrew the fastening screws of the guide to the glass slider and sticking down, raise the glass and fix it in this position - between the panel and the glass insert the screwdriver or with the help of the tape with glue to the door frame.
   
7. Now unscrew the nuts of the windows mechanism, after which the entire mechanism with the engine can be pulled out.

Spare parts, how to buy a new gear motor

A variety of cars set completely different gearboxes, so when buying this spare parts, it is necessary to remove the old motor and only after that go to the car market. Otherwise, the probability of a successful purchase is no more than 50 percent.

How to install a new power windows

After dismantling the old windows, it is necessary to inspect the cable of its mechanism.

If you have noticed on the cable of destruction or breaks, it should be replaced. Then, to the power window mechanism, we screw the new gear motor and carry out the assembly in the reverse order.

Professional advice

It is worth noting that the replacement of the windows motor is a pretty simple procedure that does not require special skills or equipment. You will need only some tools that, as a rule, have every car enthusiast. The main thing is to choose the gear motor and exactly follow these instructions. More interesting information about installing a new windows motor into your vehicle you will learn from the next video.