How to check the oil level in the automatic transmission (automatic transmission)

Modern cars are increasingly equipped with an automatic transmission. Thanks to the machine, the machine is controlled without permanent engagement of the clutch. This is convenient for novice motorists. Automatic transmission is a complex device, so it costs a lot of money. If the automatic box is not regularly serviced, it will lead to costly repairs. In order to prevent serious damage, it is recommended to monitor the oil level.

Timely check will help determine the status of the machine. Identified problems are resolved without waiting for deterioration in work. Such a procedure is not complicated. If you wish, you can do it on your own, but if you are not sure, it is better to contact the specialists.

How to check the oil level in the automatic transmission

Before checking the oil level, the automatic box is heated to 65 degrees Celsius. It is better to do this, driving a car 10-15 km. But if this is not possible, start the engine and let it work until the fan is turned on or until the coolant temperature reaches 90–95 degrees.

The box is switched to the parking mode or neutral (on some automatic transmissions). From the model of the machine depends on the method of measuring the oil level. Most of the boxes with the probe, but there are those who have it missing. Check the fluid when the engine is running.

Automatic with probe
Two tags are visible on the dipstick (Cold) and (Hot). The first shows the level of cold oil. The second label indicates the level of hot fluid in the box and is a more accurate meter. It is checked in several stages:

• Warm up the box
• Place the machine on a flat surface.
• Install the automatic transmission lever in the parking mode (P) with the engine running.
• Take the dipstick out of the box

For accurate measurement, drop the probe into the box several times at longer intervals. The oil level that has reached the Hot zone is considered normal.If the trail of transmission fluid is between the marks, it indicates a low level. In this case, pour the oil in before you can cause foaming.

Automatic without probe
Not all automatic box models have a dipstick. Such automatic transmissions are designed for service in special service centers. In machines without a probe, there are two holes: for pouring oil and draining. How to determine the level of fluid? A special oil amount limiter is screwed into the hole of the drain plug. It looks like a long tube and works on this principle: the excess liquid, which is above merges into the pan. Thus, the level is determined by the height of the limiter.

Automatic boxes with such a system are not threatened by oil overflow. The excess liquid is drained through the screwed-off plug. The disadvantage of these automatic transmissions is the inconvenient check of the transmission fluid level. It is difficult to determine the degree of contamination of the oil. Inexperienced car owners better go to the service station. But if you are confident in your abilities and are ready to learn how to maintain a car yourself, you can try.

To check the oil follow these steps:

• Preheat the automatic transmission to operating temperature.
• Put the car on a flat surface above the pit or use the lift
• Transfer the automatic transmission lever to the parking mode (P). The engine should work all the time.
• Unscrew the drain plug of the pallet

Will pour a small amount of excess fluid. If nothing even drips - the level is below normal. To fix this, add oil through the filler hole in the box. Filling is carried out with the engine running. You will see excess transmission fluid flow out of the drain hole. Wait for the droplets to go and twist the hole. In this simple way, set the desired level of oil. Experts advise to change the old liquid, which may contain in its volume of pollution.

If time does not serve the automatic transmission, it will lead to costly repairs. How? You have overlooked the level of oil. Lack of fluid or excess shortens the life of the machine or unexpectedly disables it.

When the oil level in the automatic transmission is below normal

The oil is responsible for circulating the pump, which overtakes it through the channels and creates the necessary pressure for the clutches and the torque converter.If there is not enough oil, the pump sucks air into the system. This causes the liquid to foam. Oil begins to shrink, poorly lubricate and remove heat from the torque converter. As a result, pressure drops in the system and the box overheats.

This problem is solved by a complete replacement of the oil, rather than topping up. Low fluid levels cause large amounts of metal shavings. Her many and magnets fail. The excess chips are constantly contained in the oil and are distilled with it through the system. Therefore, the entire volume of fluid changes.

When the oil level in the automatic transmission above normal

An overestimated level of transmission fluid leads to the same consequences as an underestimated. The rotating parts of the box foil the oil. This happens when the car is moving at high speeds. The volume of oil increases and flows out through the breather. As a result, the fluid remains below normal.

This problem has a simple solution. Let the car stand until the oil stops foaming, and then pump out the excess.

How to check the quality of oil in the automatic transmission

You will need a syringe connected to the length of the dropper hose. Dip it in the hole for the probe and add some liquid. By the black color and burning smell, you will realize that it is time to change the oil in the automatic transmission.

Automatic transmission is the main element of the transmission. Comfort and safety depend on her condition. Do not delay maintenance, regularly check the oil level. Careful handling will extend the service life of the automatic transmission and will not fail, even in difficult conditions.

Video: changing the oil in an automatic transmission