Speedometer is an important device showing the vehicle speed and counting distance that the car is passing. This information displays a special pointer located on the instrument panel. Many car owners have to deal with the situation when the speedometer on the car is either not working at all, or its arrow is twisted, showing incorrect values. In such cases, the speedometer is needed, but first of all it is necessary to find out the cause of the breakage. About this further in the article.

Speedometer, device and purpose

The reasons for which the motorist needs to control the vehicle speed, several. Home - Compliance with the speed and traffic rules. Since the permissible speed on the way or other roads is different, it is necessary to constantly check the speedometer data. In addition, an odometer is included in the speedometer - a countable node that shows the distance traveled by the machine for all the time. With it, you can clearly determine when to make a replacement, such as oils or filters.

Mileage data is also not the last factor during the purchase of a used car. In addition, the odometer is able to show and intermediate information about the kilometer traveled. On transport that is not equipped with an on-board computer, such a function of the odometer allows you to calculate fuel consumption or spark the distance, for example, from work to home.

Types of speedometers

Speedometers are two types: electronic and mechanical. The latter are equipped with a mechanical indicator, like the arrow. The electronic shows the electronic indicator, that is, the numbers on the display. The most common type of mechanical speedometer is magnetoinduction, in the design of which includes two mechanisms - countable and high-speed.

Externally, electronic speedometers do not differ from mechanical. However, in contrast to them, the speed sensor in electronic speedometers no longer turns the flexible shaft, and transmits an electrical pulse, obeduating the arrow of the device rotates.

Speedometer malfunctions

There are two main speedometer malfunctions, due to which it may not work.

slow shaft cable, cause

In this case, it is necessary to lubricate the semiconductor shaft, which is the main element of the device. It is located in a special shell, which is placed in a pipe from polychlorvinyl. It is able to prevent moisture from entering, as well as a lubricant leakage that is necessary for a flexible shaft for continuous and accurate work. The long operation of the car implies a gradual drying of the fluid. If this happens, the car owner can hear specific rustling sounds, while the arrow of the device can twitch.

flexible shaft breakdown

In this situation, the device simply ceases to function, as the item is erased and rushes over time.

Tools, fixtures, consumables

To lubricate the item, you will need:

1. Screwdriver.
2. Spanners.
3. Special consistency grease.

Repair (lubricant) flexible shaft

1. First of all, it is necessary to disconnect the device itself - for this we turn out on both sides, the precipitated nuts.
2. Next, pull the flexible shaft in the direction of the drive, we break the ends of the shut-off washer and remove it.
3. Now gradually pull the part from the shell.
4. After that, we remove the remains of the old lubricant using kerosene and dry the parts.
5. Then it is necessary to smear the part on the drive side into two third lengths.
6. After performing the operation, insert it back into the shell, close the lock washer and install in place.
7. At the last stage, we well tighten the pressure nuts.

Replacing a flexible tree

When the flexible shaft is cut, it must be replaced with a new one. The replacement of the cable with the removal of the old element begins. To do this, do items 1-3, which are described in the previous subtitle. Next, set a new cable instead of a damaged element, after which we do items 6-7. It is very important to remember how the item was installed to correctly perform its replacement. Before proceeding with work, read the instructions for your car, because each vehicle model can have its own features of the device dismantling.

What lubrication can be used, recommendations

It is impossible to lubricate the flexible shaft of the speedometer with lubricants, durable or viscous at low temperatures, otherwise at the beginning of the parking lot from the parking lot in the early morning the shaft will simply break. It is advisable to lubricate it with the Lubrication "CIATIM-201", "Slusa" or "Litol". So he will serve much longer and will not carry in the places of bends of the shell.

Council Prof.

As you can see, the lubricant and replacement of the flexible shaft of the speedometer is an easy event. Following the instructions described above, you can quickly eliminate the device breakdown without resorting to the help of specialists.