The safety of the driver, as well as passengers in the car, especially when driving in bad weather conditions directly depends on the purity of the front glass. The surface of the glass purifies the cleaner, and it is precisely from its performance whether the glass will be clean and to what extent. In this article, we will consider such an element as a wiper trapezer (abbreviated vehicle), since it plays a key role in the performance of the entire node.

Wiper design

The main components of the wiper:

• Control system.
• Brush and leash.
• Trapezium.
• Levers.
• Worm mechanism.
• Electric motor.
• Reducer.

So that the brushes of wipers smoothly moved along the glass, a sufficient effort should be transmitted on the leash. This is achieved due to the operation of the electric motor connected to the gearbox, which has the presence of a worm mechanism. Since the system has a gearbox, you can reduce the frequency of the shaft turnover and increase the magnitude of the trapezoid transmitted. The trapezium synchronizes the movements of both brushes.

Wiper trapezium, device, principle of operation and purpose

The trapezium is one of the most important components of a wiper mechanism that translates the rotational movements of the electric motor in the movement of janitors. The trapezium design is actually identical to all models of cars. The differences are concluded in the methods of fastening, form and sizes of its components.

The device consists of such details:

• hinges;
• traction;
• hinged cups.
• frame.

With the help of calculations, designers are diagnosed, which should be the profile of the TC links. Due to this, the design forms the required margin of safety, i.e., when driving, the integrity of the system is preserved.

To reduce losses at electricity and friction consumption, the device connections are made from polyformaldehyde. It is distinguished by high wear resistance and low friction coefficient. From friction and corrosion processes, metal parts are protected by a galvanic layer.

The principle of operation is as follows: the finger is driven by a motorcycle and makes the trapezium move. Then there is a compound of shafts with a gearbox with a thrust through vibrational movements. As a result, the brushes of the cleaner move from the side to the side, and the glass surface is cleaned.

Wiper trapezium, faults and methods to eliminate them

On the wrong work of the trapezium and the presence of damage on it, the failures in the functioning of the janitors themselves testify. For example, they can move too slowly depending on the operation mode, as well as to divert the glass when cleaning the glass. Another bright confirmation that the wipers failed are jumps, intermittent brushes movements, as well as a specific sound from a leash during work. The reason for this phenomenon is to oxidize on the drives of the wiring, which are located in the trapezoid bushings. If you ignore the oxide, the electric motor may break, because large loads fall on it.

If the iconic leashes appeared, then the trapezoid bushings were worn. In this case, it is necessary to repair the trapezoid or its replacement. Otherwise, the likelihood of getting into an accident is greatly increasing. The need for the repair of a trapezium may indicate reduced pressure. If the wipers are not able to completely remove water or snow, then there are problems with pressure. If trapezium thrust malfunction, the movement of the brushes is difficult. The cause of the breakdown may be the wear of individual elements. In this case, remove, disassemble the mechanism and replace the worn items.

Wiper trapezing how to choose

When purchasing a new product, pay attention to its size and fastening method. The trapezes may differ in the size of the leashes and the plug of connecting to the electric motor. It is advisable to give preference to original products that are intended for your car model.

Replacing the wiper trapezus with their own hands

The replacement of the trapezium is a fairly simple event that can be easily accomplished on its own without resorting to the help of workers a hundred.

materials and tools

Before work, prepare such tools and materials:

1. Graphite grease.
2. New product.
3. A set of keys.
4. Flat and cross screwdriver.

step-by-step instruction

1. Initially, turn off the power supply of the vehicle by removing the terminal from the battery.
2. Next, remove the old trapezion, for which it is necessary to dismiss the facing of the windshield, as well as the expansion tank.
   
3. Then disconnect the janitor's motor connector.
4. After that, unscrew the right and left fastening nuts of the glass cleaner, remove the wipers, all the plugs, as well as fasteners with the cereal screwdriver. It is also necessary to dismantle plastic parts on the casing.
5. Next, unscrew the screws of the electric motor bracket to the body of the machine and fasteners, which connects the trapeze with the engine. Then you can remove the motor.
6. After removing the electric motor, you can extract a trapezium.
   
7. Before mounting, a new trapezium should be collected because it is sold unchanged.
8. Install the new product and assemble the mechanism in the reverse order.

After the assembly is completed, adjust the brushes and lubricate all the parts and nodes of the mechanism using graphite lubrication.