Cars with automatic transmission are no longer a rarity on our roads. Just a couple of years - and the automatic transmission will completely replace the mechanics. Automatic transmission is convenient to use. But so that it does not cause complaints during operation, you need to know how to properly service it. The key to a long life is the timely replacement of oil in the box. On automatic transmission, it is done by a partial method or a hardware replacement method. The latter method is more correct from a technical point of view. But in order to perform such an operation, you need a special apparatus for changing the oil in the automatic transmission. What is it and how does such a unit work? Find out in our article today.
Characteristic
The automatic oil change device is a small stationary or portable stand that connects to the automatic transmission system and replaces the old fluid with a new one.
Today there are several popular manufacturers of such units:
- Impact (Korea).
- Vinnes (USA).
- Civic (Russia).
How it works?
The principle of operation of any apparatus for replacing oil in an automatic transmission is simple. The unit is connected to a 220 V network and, using an electric pump, starts pumping liquid. There are devices with a pneumatic drive, but they are less convenient to use and take up a lot of space.
Also note that the apparatus for changing the oil in the automatic transmission can operate on a 12 V network. It all depends on the characteristics of the pump, which replaces the fluid. Units are able to work with all types of automatic gearboxes where a cooling system is provided. It is through the radiator pipes that a similar unit interacts with the transmission.
Does hardware oil change harm the box?
There is an opinion among motorists that a similar replacement method is not suitable for all automatic transmissions. Like, with the hardware method, all “useful” deposits are washed out of the box, and after such an operation the box begins to kick. In fact, there are no “useful” deposits in automatic transmissions. It is a myth.
It can only be harmful if, when replacing, not 100, but 50% of the new fluid is poured into the system. As a rule, such tricks are used by unscrupulous service stations in order to save. After all, a liter of ATP-liquid costs about 1 thousand rubles. And all in all, about twelve take to replace.
In what cases will such an operation be useless?
There are situations when, after replacing the ATP fluid, the box is still kicking and pushing when shifting gears. This usually happens when you ignore the timing of the oil change. A simple example: you bought a used car, the former owner of which claimed that he had recently made a hardware replacement of ATP-liquid. In fact, it smells of burning and has not changed for one hundred thousand kilometers.
Even if you completely replace the fluid with a new one, rinse the valve body and install a new filter, the kicks will not disappear. The thing is in the clutches, which once burned and began to slip. In this case, automatic transmission repair is required . It’s better not to do this operation with your own hands , since such a box has a more complex device than mechanics.
How much to change the oil in automatic transmission?
Regardless of whether a four- or six-speed automatic, the replacement procedure for all automatic transmissions is the same - 60 thousand kilometers.
But that's not all. At the same time, the oil filter is replaced. By the way, with the partial method this regulation is different. How much to change the oil in automatic transmission? The regulation is 30 thousand kilometers.
How is the replacement made?
A similar operation is performed on a heated box. The car is driven into the box, and the master connects the device to the system gap between the oil cooler and the box. When connecting, it is important to determine the direction of fluid flows and find out from which pipe the used oil will go. How it's done? First you need to connect the device to both pins and start the car. Next, the unit will determine where and where the liquid will go. You can find out the direction and manually. But in this case, an empty container is substituted for the pipe. From where the liquid will flow, there will be a return hose.
After connection, a new ATP-liquid should be poured into the apparatus tank. If it is a variable transmission, then CVTF fluid is used. Next, start the car engine, and set the replacement mode on the device itself. It is manually entered using two three-way valves. Next, you need to control the colors of the liquid that go on both sides.
Initially, the return will be black. But as the unit works, it will turn red. As for the flow indicators themselves, these are usually two glass transparent cones. On some models (for example, “Civic KS 119”) there is an LED backlight.
When the unit is operating, it is necessary to constantly monitor the condition of the liquid. Its flow rate is determined by the oil level in the tank with the old mining. Inlet and outlet fluid flows should be the same. If necessary, their speed is regulated on the device, since the automatic transmission pump does not always work at the same frequency as the unit itself. There are models on which this process is automatically controlled. Electronics itself regulates the flow and volume of fluid movement.
When all the oil from the reservoir is pumped into the box, the unit is switched to recirculation mode and the engine is turned off. Modern devices for changing oil have a sound indication. Thus, the device itself will give a signal when it is necessary to complete the process. Next, the master checks the oil level in the automatic transmission and, if necessary, resumes it to the desired level. This completes the operation to replace the ATP fluid. You can begin full operation.
Features of replacement on continuously variable transmissions
On some variable automatic transmissions (such were installed on Toyota), there is no dipstick by which you can determine the oil level in the box.
In this case, units are used in which there is a function of automatic flow control. This feature allows you to spend less CVTF fluid.
Conclusion
So, we found out how the oil is filled in the automatic transmission by a complete replacement. Such an operation will completely replace the ATP-liquid in the box. If you adhere to the given regulations, it is unlikely that you will have to do the automatic transmission repair yourself. Such a box will last a very long time.