Oil change in an automatic transmission (automatic transmission). The process of replacing the transmission oil in the gearbox

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Our approach is focused on the most efficient use of the budget for the repair of the Mercedes A160 w 169 168 variator: somewhere it is worth repairing a unit or part and saving money, somewhere you have to buy exactly new components because from experience knowing that the repaired part will take a long time passes - we will not do this despite the apparent immediate benefit. We need a stable word of mouth, i.e. iron recommendations.

We never hide anything - the defect detection before the overhaul of the box, the Mercedes A 160 automatic machine always takes place in the personal presence of the client or his trusted person.

We strictly adhere to the guarantee obligations: you will never see tricky contracts with small letters with mandatory additional services after restoration in a specified period and when the deadline is exceeded (at least 1 day or 1 km late) - the warranty is void. If something happens during the warranty period through our fault, then all work to eliminate the malfunction is free.

We are partners of ZF, Transtar, Borg Warner, Precision, Sonnax, Alto, Dynax, Slausson, Transtec. Overhaul of automatic transmission Mercedes A160 is carried out within 3-5 working days, partial in 1-3 days.

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Home »Video» Repair of automatic transmission Mercedes a160

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Mercedes A-class A160 - video on VideoRemont-Mashin.ru

  • Published on 9 September 2016

    If you have a car with a broken automatic transmission and you want to know what is the reason, write in the comments the make of the car and the volume and how it behaves, we will shoot a video with your breakdown or explain what is wrong with it !!

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Home »Popular» Automatic transmission Mercedes a 160 1999

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Automatic transmission repair on Mercedes A 160

Mercedes A160 1.7 CDI 2003. Need advice on the breakdown of the box. Mileage 150,000 the box worked perfectly, nothing was associated with a breakdown, the pauses when switching did not increase, there were no jerks when switching. One fine day in the morning I started it as usual, warmed up a little until the revs dropped, but when the gear started, the gear engaged hard and the movement with the brake pressed was jerky and thrust, as if still at increased revs during warming up. No errors popped up. Then, while driving, I noticed that it switched from 1 to 2 normally, but from 2 to 3 it was hard with a shock, at a speed of more than 80 gear shifting took place in normal mode. I went to the Mercedes Center for diagnostics. The verdict requires replacing the torque converter and disassembling the automatic transmission to find out the cause of the breakdown and subsequent repair. the prices are exorbitant, they advised the workshop where the torque converters are repaired. They took a ride there and found the same problem. Left the car for a torque converter repair. They repaired it a week later, but said that the box had broken it and that the main problem was in it and that it needed to be disassembled as they said at the Mercedes center and find out why the torque converter had broken down. first, they asked for $ 300 for the repair of the torque converter and for removing it and putting it in 200. Okay, what to do ... Then they said that for removing and disassembling the automatic transmission another 500 + 200 for a repair kit + 200 for an oil / filter in total they said $ 1300-1500 ... But when, a week later, they put it all back to me and said that come and take the repair costs 1500. I drove with gritted teeth, but I didn’t take the car, I couldn’t leave, there were noises in the generator area and there was no charging, the error lamps of ABS, battery and more something. They said that we will leave and check tomorrow. tomorrow they called back and said that we could not pick up the error R 1889 popped up, that something was wrong with the oil pressure in the automatic transmission. A month passed, they removed the valve body 2 times, cleaned it, looked, and decided that the problem was in it. When the car starts up cold and drives well, I switch gears without problems, but after 15 minutes, after the automatic transmission heats up, this error pops up and the gears stop shifting. remains in one gear only. Zaptsatska new costs $ 2420 at the Mercedes center, not counting the fact that 1500 has already been invested in the automatic transmission repair. In a miracle garage I was told that they can find it for a price of just over 1000. And that in Belarus no one repairs the valve body, only in Poland. So now I can’t sleep well, I’ve already quarreled with my wife, of course I’m to blame for everything and the breakdown both in cost and in terms of work. The question is, was everything that was done in the garage really necessary? is it really the cost of work? Is it possible to make an error during the repair of the automatic transmission leading to further breakdown? And the most important question is WHAT TO DO?

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Home »News» Mercedes a 160 automatic transmission problems

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Changing the oil in a Mercedes automatic transmission is the same integral procedure as routine maintenance or changing the oil in a car engine!

The gearbox and engine of a car are complex and expensive components, the failure of which can seriously affect the financial condition of the motorist. But if most motorists know about the planned replacement of consumables in the engine every 10-15 thousand kilometers, then not everyone suspects the need to change the oil in the Mercedes automatic transmission.

Cost The cost of work on replacing transmission oil in a Mercedes automatic transmission from 4000 rubles

Until 2000, Mercedes gearboxes were completely considered maintenance-free, but when the manufacturer started to have serious problems, the maintenance schedule was changed. As a result, the recommended interval was 60,000 km.

At the moment, changing the oil is directly related to the nature of the car's operation and depends on the conditions of the regulations and service system specific vehicle Assyst and Assyst Plus.

Also, the mileage range for changing the oil depends on the series of automatic transmissions - for example, the most common 722.6 and 722.9 (7g-tronis and 7g-tronic PLUS) or a completely new 9-speed 725.0 (9G-tronic) for runs from 60,000 to 120,000 km ...

Automatic transmission malfunctions associated with improper maintenance

The problem of delayed oil change in the box is accelerated wear internal parts gearboxes. First of all, friction and steel discs, the torque converter and valve body elements suffer. Overheated oil or oil that has lost its properties leads to an increase in the temperature inside the gearbox, lubricating and cooling properties are lost, mechanical wear of the contacting elements occurs.

Friction clutch wear is one of the main reasons for the overhaul of automatic transmissions, it leads to the appearance of shocks during the gears adventure, gear slip (gear slip or axle box).

Low oil level can also harm the box in front. It is important to conduct a visual inspection of the unit as part of routine maintenance.

In general, time-relevant maintenance prolongs the "life" of any hydraulic unit of the vehicle.

The process of replacing the transmission oil in the gearbox

To carry out a high-quality process of changing the oil in a Mercedes gearbox, it is required complete replacement... To do this, the oil is drained through the automatic transmission pan drain cover, the unit pan is removed.

The filter, which is an irresistible attribute of an automatic transmission, must change along with a small one every time it is replaced. In addition, the automatic transmission gasket, drain plug and washer are also subject to replacement.

The volume and type of oil used from the series and version of the automatic transmission, because the pallets for different versions of the automatic transmission differ ( rear drive or four-wheel drive 4matic) and is determined by service software WIS.

For refueling a Mercedes automatic transmission, two main types of oil are used - red and blue-green (ATF 134). The oils are not compatible with each other and their use by model is clearly defined by the vehicle operating instructions. The updated automatic transmissions (7G-TRONIC PLUS) use green oil.

  • The oil is completely drained, then the sump is removed and the valve body is blown with air.
  • The automatic transmission oil pan is thoroughly washed, and the old filter is disposed of, making room for a new one.
  • After replacing the filter, in its place, back, the pallet is mounted through a new sealing rubber. Oil is injected (for 7G-Tronic (plus) and 9G-Tronic) or it is filled through a special tube (applicable for automatic transmission 722.6 or older versions). Then the car warms up (automatic transmission) and the working level is set transmission oil.

The use of only original spare parts and consumables, as well as the observance of the technological procedure for replacement guarantees the correct operation of the transmission!

The frequency of oil change in automatic transmission Mercedes A is regulated by the manufacturer, and we advise you to follow these recommendations strictly. By the way, change transmission fluid Mercedes has its own regulations - every 60 km at least.

Generally, check oil level in automatic transmission Mercedes A it is also necessary in the course of diagnosing a Mercedes A automatic transmission, as well as determining its quality and color.

Checking the oil level in the automatic transmission is necessary to maintain correct work transmission Mercedes A. In fact, this is the basic maintenance of the automatic transmission.

If the transmission oil of the automatic transmission is below standard indicators, this threatens:

  • violation of temperature and a decrease in its resource;
  • breakdown oil pump automatic transmission (the oil will turn into an oil-air emulsion, will cause a decrease in pressure in the system, the heat removal from the automatic transmission will be disturbed, the lubrication of the automatic transmission will deteriorate, the transmission will be lost).

If the level of transmission oil is higher than required, then the cause of the malfunction of the entire unit will be:

  • foaming of the oil (an increase in its volume and a natural release through the automatic transmission breather dipstick);
  • the volume of liquid will increase (reaching the rotating parts, it will disrupt the operation of the entire system).

With a low rate, the automatic transmission becomes unusable faster, and the following symptoms will tell you about a problem with oil and without diagnostics:

  • noisy work (noise during automatic transmission);
  • long gear shifting;
  • lack of movement when changing gears.

True, it can be noted that now an automatic transmission is installed on many Mercedes, the scheme of which includes the connection of the oil tank with the oil pan through the bypass valve. Thus, the maintenance of the desired liquid level is carried out.

If the oil level still needs to be checked, then this procedure with a dipstick and on a working motor as required by the technology.

In addition to the above, we draw your attention to the fact that the properties of the transmission fluid change over time, which means that it loses its properties. Boiling at high temperatures, it accelerates wear friction discs, becomes the cause of clogging of the channels of the torque converter (donut) of the automatic transmission, affects the appearance of precipitation and friction chips.

Over time, the gearbox oil can become viscous, which is also an indication for its replacement, otherwise, over time, defects such as stuck pressure valves will appear.

Features of oil change automatic transmission Mercedes A

Changing the oil in the automatic box necessary procedureincluded in routine maintenance for any car, including Mercedes A.

If the master is tasked with replacing the automatic transmission oil, then he will be selected not only the fluid itself, but also new ones oil filter and sump gaskets (sealing element), as well as the torque converter plug. This is not surprising, since the need to install consumables is included in the change process technical fluids on any car.

It should be noted that oil change in automatic transmission Mercedes A-Class is impossible without removing the automatic transmission pan, as well as cleaning it.

There are also two options for changing the transmission fluid that can be offered to you at the technical center:

    1. Partial replacement ( lubricant only need to be drained from the transmission pan).
    2. Complete replacement (it is necessary to remove the automatic transmission, and then drain the oil from the gearbox itself and the torque converter).

A complete oil change in the automatic transmission is also performed during the repair of the Mercedes A automatic transmission and can be included in the total cost of the work.

Until recently, it was believed that Mercedes automatic transmissions are not serviced units. Only in 2000, Daimler officially made changes to the automatic transmission service regulations, obliging to replace the transmission oil in the automatic transmission every 60 thousand kilometers.

Untimely oil change leads to breakdowns of the Mercedes automatic transmission. When overrun, the transmission oil loses its working properties and characteristics, overheating of the oil and automatic transmission elements begins.

The most sensitive to overheating are friction discs, which begin to wear out at high temperatures. Wear products begin to clog the valve body channels, the solenoids may not work correctly, the automatic transmission starts to work incorrectly. Long-term operation of a car with such oil leads to breakdown of the automatic transmission.

An oil change in a Mercedes automatic transmission should be carried out every 60 thousand kilometers. For automatic transmissions, a special transmission oil is used, intended for the corresponding series of automatic transmissions. Those. oil intended for automatic transmission of the 6th series (722.6) cannot be used in the 9th series (722.9) and vice versa.

As part of an oil change in an automatic transmission, an oil change is made, oil filter, oil pan gaskets, drain plug O-ring, and drain plug itself.

In the course of the work performed, it is also possible to make a comprehensive diagnosis of the Mercedes automatic transmission. In any case, the condition of the automatic transmission can be determined by the color and smell of the transmission oil. The presence of shavings in the pallet and characteristic burning smell oil will talk about the wear of the friction discs and the approaching overhaul Automatic transmission Mercedes.

When changing the oil, a visual inspection of the automatic transmission for leaks is also carried out. If an oil leak is detected, we recommend correcting it. Oil leakage and its reduction in the automatic transmission usually affects the quality of the automatic transmission. Lack of oil leads to a decrease in pressure in the clutch package, which in turn leads to the so-called pushing and jerking of the automatic transmission when shifting gears. A decrease in the oil level leads to accelerated wear of the clutches, and the wear of the clutches is already an expensive repair of the automatic transmission.

The process of changing the oil in automatic transmission 722.6 consists of the following stages:

  1. We drain the old oil through the drain hole;
  2. We drain the old oil from the torque converter;
  3. Remove the automatic transmission pallet;
  4. We replace the filter, pan gasket, O-ring and drain plug automatic transmission torque converter;
  5. The automatic transmission pallet is being washed;
  6. Pour 4 liters of oil into the automatic transmission and the car starts;
  7. We adjust the oil level in the automatic transmission, periodically changing the gear (from P to D and vice versa).

The process of changing the oil in the automatic transmission Mercedes 722.9 is not much different from changing the oil in the 6th series. Because the oil circuit of the automatic transmission 9 is closed and in it the filler neck is the same as on the automatic transmission 722.6, the oil is not poured, but pumped through the pallet using a special. tool.

We only use original spare parts and repair kits for automatic transmission. We repeat once again that all Mercedes automatic transmissions are serviceable and it is important to produce them on time maintenance... For greater confidence in the serviceability of the Mercedes automatic transmission, we recommend that you regularly diagnose it.