Motorists, if they really love their car, try all new gadgets insert into their vehicle, thereby trying to improve their car. The electronic drive of the speedometer is one of the elements of the enhancement of its own machine.

Speedometer, what speedometers come

Speedometers are mechanical and electronic and installed on all vehicles. like that:

-Gruid cars, passenger cars, motorcycles and motor collections and on a variety of special equipment.

The word speedometer has in its root, as the English part of the word - the speed and Greek - measure, measure.

The task of this device includes, determine the speed of movement and measure the mileage mileage.

The electronic speedometer installed on modern cars, unlike the mechanical speedometer, has proven itself as a reliable and accurate mechanism for measuring the speed and distance.

The electronic speedometer is considered a fairly expensive device and the operation of such a speedometer is strictly fixed.

All speed and range data is read not only from the wheels and this data is stored in non-volatile memory, and there are several memory storage points.

Speedometer how he works

Since there are rules of movement on the roads, in particular riding in separate areas with various limitations of the speed mode - the speedometer, the mechanism that must follow the speed of the technical means, and technical means include not only cars and buses, but also motorcycles and mopeds.

And on each of the means of movement should be a speedometer. In addition to the task, determine the speed, the speedometer shows the distance traveled. The speedometer consists of several parts, the actuator and flexible shaft can be attributed here.

These main parts of the speedometer transmit rotational motion from the transmission to the device of the speedometer itself. On the car dashboard, the driver sees the current values, and the numbers are obtained due to the operation of the main parts of the speedometer with the drive, which is in the gearbox.

The speedometer has high-speed magnetic nodes. The magnet rotation creates a flow of particles, this thread passes through the coil and the induction of vortex currents is created in the coil.

The vortex currents create another magnetic field, the combination of magnetic fields create the interaction and the device arrow moves in proportion to the magnet rotation frequency.

The special gearbox in the speedometer provides the correct selection of the gear ratio.

A special rear-wheel drive reducer carries out control over the operation of the secondary shaft.

And on the front-wheel drive vehicles, control is carried out from the sensor, which is installed on the left front wheel.

And if the error of the speedometer of the rear-wheel drive car depends on the size of the tires, then the error of the speedometer of the front-wheel drive car depends not only on the size of the tires, but from the roundabout of the road.

Speedometer, speedometer drive malfunction

If the speedometer arrow does not respond to changes in the speed of the machine, then there are problems with the speedometer drive and repair is required.

The causes of the speedometer actuator may be several:

- It is possible to simply weakened the nut, which fastened a flexible shaft to drive a speedometer. In this case, the most elementary repair is made, which is the need to pull up the nut;

-And a flexible shaft breakdown;

- the failure of the mechanism itself is possible, which is located on the instrument panel of the car;

- perhaps pollution of the gearbox of the gearbox;

- perhaps the wrong installation of the device;

- perhaps just weakened all fixings;

-If arrow of the device hit, which means the spring break occurred, to that case, the speedometer changes completely;

- If the lever noise is heard, it means that it is necessary to lubricate a flexible cable;

- if the speedometer is constantly lying if the indicators do not correspond to the present speed, most likely, the cable was incorrectly attached to the shaft;

- It is possible to simply the speedometer is not adjusted, you will have to adjust.

Speedometer how to repair the speedometer drive with your own hands

If you decide to repair a speedometer drive with your own hands, first of all study the car's operation manual and find the place of installation of the speedometer mechanism on your car.

You will have to make a dismantling of the speedometer drive in the event of replacing the sealing ring, gear or housing.

And if on VAZ cars, the speedometer drive mechanism is located so that it is possible to remove it quite easily, then you will have to sweat with a foreign car. After you have learned the instruction manual and found the mechanism itself, unscrew the fastening bolt, which crepts this mechanism to the gearbox itself, find it with a screwdriver and remove the node.

Carefully inspect the gear and its landing socket, in the nest is the end of the flexible thrust of the speedometer.

During the inspection, no defects and dirt should be detected.

If there is oily spots when inspecting the box housing, it means that it is necessary to replace the sealing ring.

In order to get to the sealing ring, you will have to remove the speedometer drive driven gear and only after that you will reach the seal and can replace it.

Now it is necessary to collect everything in the reverse order, but before the collection you need to wash all parts well in kerosene.