Mazda 6 automatic transmission DIY repair

In detail: Mazda 6 automatic transmission do-it-yourself repair from a real master for the site my.housecope.com.

The classic hydromechanical automatic machine is still in service and successfully competes with modern variators and robots. The convenience of an automatic transmission has long been appreciated by buyers. The evolution of automatic transmission is in a gradual increase in the number of steps and the introduction of electronic control.

This is confirmed by the creators of the 3rd generation Mazda 6, installing this type of transmission on the car. Automatic transmission Mazda 6 - the unit is quite reliable, but requires constant attention and periodic maintenance.

Fifteen years ago, the Mazda 6 automatic transmission had 4-5 gears and, despite the increased fuel consumption compared to the manual transmission, it was simple and reliable. Problems could arise only when the mileage was over 150,000 km, and even then if the owner forgot about replacing the transmission fluid. After all, oil or liquid for automatic transmissions (), not only serves to lubricate and cool parts, but also ensures the transmission of torque and the operation of the entire unit. Therefore, no matter how high-quality the liquid is, it has its own resource and needs to be replaced.

However, according to the Mazda 6 Operation Manual, the oil in the automatic transmission does not require replacement and is designed for the entire service life. For how long? Guarantee period? 200,000 kilometers?

In reality, on the Mazda 6, the automatic transmission fails much earlier without changing the fluid. Over time, the liquid loses its properties and does not fulfill its functions, so replacement is required. Experts explain this by the difficult Russian operating conditions, close to extreme, for which the Mazda machine gun is not designed. This means that it is necessary to adjust the maintenance schedule.

Video (click to play).

Automatic transmission Mazda 6 is a unit consisting of a torque converter, a planetary gear and a control system. The torque converter works like a clutch in the Mazda 6 mechanic, ensuring smooth operation of the automatic transmission.

The main signs of a machine malfunction are jerks and jerks when switching.

Jerks when shifting from 1st to 2nd gear are typical for the 4-speed gearbox on vehicles up to 2007. The reason was the worn out rear cover of the unit. Urgent fluids and covers needed. Repair of a Mazda 6 automatic transmission is not a cheap operation, so it is important not to miss the moment. Otherwise, the friction clutches and even the box body may fail.

A five-speed automatic appeared on the Mazda 6 GH, on which jolts appeared when switching from III to IV. A possible cause was also a malfunction of the electronic control unit.

The design flaw of the Mazda 6 was also an automatic transmission radiator combined with a radiator for the cooling system. During the breakdown of the main radiator, coolant entered the automatic transmission fluid. The resulting emulsion is destructive for this node. Vibrations appear at a speed of about 60 km / h. Overhaul of the machine and oil change are inevitable.

The average price for an automatic transmission repair with a cover change, with consumables and an oil change is 30 thousand rubles.
The cost of repairing five-speed Mazda 6 gearboxes with crankcase restoration without removing the automatic transmission and changing the oil will be 38 thousand rubles. If the gears are gone and the unit must be installed and dismantled, the price reaches 45 thousand rubles.

If you operate a car with an emulsion in a transmission fluid for a long time, the pistons and friction discs are worn out, and the solenoids may need to be replaced. The cost of overhaul will be 50 thousand rubles.

The option of replacing the box with a contract one for the same 50 thousand is not the most reliable, because what will be inside, no one knows.

As doctors say: "Preventing a disease is easier than curing it!" With the maintenance of the automatic transmission Mazda 6, the question is controversial.

The position of the manufacturer is that the box cannot be prevented or repaired. There is no replacement of the transmission fluid in the regulations.

On the other hand, the liquid works in the most difficult conditions and has its own resource. Loss of ATF properties occurs after about 50-70 thousand km, so replacement is necessary.

It is also important to periodically monitor the level and condition of the oil in the automatic transmission Mazda 6. This can be done using a dipstick screwed to the body.

It is enough to apply a drop of liquid from the dipstick onto a white sheet. After that, make an analysis. The oil should be clear and pink in color. If the liquid is dark and contains particles, this is a sign of incorrect operation of the box. The oil needs to be changed. An oil change will be much cheaper than a probable repair.

Check the main radiator for coolant leaks at every service. Timely replacement of the radiator will prevent automatic transmission repairs.

Of course, this is a personal matter for each owner of a Mazda 6 automatic machine - to follow the manufacturer's recommendations or every 50-60 thousand. km to change the ATF and enjoy smooth transmission shifts.

Many problems with the Mazda 6 automatic transmission can be prevented by checking the oil level, its color, the presence of particles, the integrity of the unit cushions and the radiator. These simple measures and a discreet driving style will extend the life of the automatic transmission, save your nerves and money.

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The automobile concern Mazda, unlike its competitors, does not particularly like to experiment with transmissions. After unsuccessful attempts to curb rotary engines in the 80s and 90s, Mazda decided to make calm and successful cars. Typically, transmissions used on Mazda vehicles are time-tested, reliable designs. In the middle of the 2000s, Mazda nevertheless decided to modernize transmissions due to new requests and competition. But this time it was ingenious reworking and modernization of existing schemes that did not spoil anything and left their transmissions reliable, easy to repair and unpretentious in everyday driving and operation. A car service anywhere in the world can easily cope with the repair of Mazda boxes.

The second generation of the sixth model, the Mazda 6 GH, received the TF80SC automatic transmission. The family of these automatic machines is designed for engines from two to five liters, with a torque of up to 450 Nm. The latest modifications of this automatic transmission are an engineering masterpiece. Mazda engineers managed to fit the machine into the engine compartment with their own hands and ensured very fast and smooth switching. The Mazda 6 GH automatic transmission allows you to go fast, economically and at the same time it is very reliable and not subject to overheating, like modern counterparts and easily competes with preselective gearboxes.

The weak point of the Mazda 6 GH automatic transmission is traditional for six-speed transmissions. The Mazda 6 GH torque converter still uses a friction lining that wears down and clogs the box with its decay products. Locking in this automatic transmission is made traditionally and is not used constantly, as in modern cars. The Mazda 6 GH automatic transmission, like its counterparts, is subject to combustion of clutch packages. Usually starting in second gear or reverse. After the combustion of at least one, all other clutches of the Mazda 6 GH automatic transmission will be saturated with burnt oil and will soon fail.

Valve body mechatronic TF80SC

The valve body needs cleaning every 150,000-200,000 kilometers; this requires a visit to a car service. It will be problematic to dismantle the box with your own hands and flush it. In our winter, rubberized pistons become tanned after a few years and need to be replaced.The Mazda 6 GH automatic transmission is very sensitive to oil, it is better to pour only the original.

Mazda Demio was equipped with a four-speed automatic transmission 4F27E. This "workhorse" is still being produced. Major malfunctions are usually associated with dirty oil. The clutches of the overdrive package and reverse gear are the first to suffer on Mazda Demio. This is a classic Mazda Demio problem associated with the design features of the automatic transmission. This is due to the wear of the seat on the drum of the Mazda Demio automatic transmission and subsequent oil losses. The Mazda Demio computer overloads this node unnecessarily. Consumable tape for Mazda Demio is considered a consumable. The piston of the overdrive package often changes, especially if the box has overheated. The teflon rings of the rear cover and pump can be considered consumables and can be changed along with the oil and filter change. The electrics and the automatic transmission valve body are very reliable and rarely require repair.

Automatic transmission control unit 4f27e

Mazda Premasi was equipped with an automatic transmission of the 4EAT-G series. This is the first Mazda automatic transmission, on which electronic control began to be implemented. A significant share of requests for the repair of this automatic transmission ends with the replacement of the torque converter oil seals and various gaskets. The auto repair shop usually considers such work to be easy. From the clutches on Premasi, the packages of the third and fourth gears usually burn out. From the electronics, the line pressure and torque converter lock-up solenoids are the first to fail. For older cars, it is better to change the entire set of solenoids. When driving for a long time with a low oil level or with a dirty gearbox, bushings and oil seals quickly wear out. This usually manifests itself as increased vibration when driving a car. In the event of their appearance or strengthening, you should not wait for the denouement, but immediately go to the car service.

Mazda MPV was equipped with a G4A-EL gearbox. These automatic transmissions usually run for a long time at the MVP, but they arrive already in poor condition. Usually, the entire set of clutches is immediately changed on the MPV. Various gaskets that give oil leaks are aging, they should also be changed at the earliest opportunity. The gasket and pump seals are the weak point of the MPV. The electrical is very reliable and rarely fails, with the exception of solenoids, of course.

The Mazda Tribute was equipped with a CD4E box. This very simple and reliable four-speed transmission has become very popular. For three-liter engines, this transmission is rather weak, but on less powerful engines it drives for a very long time, it is simply repaired and drives the same amount. The best design solutions from it were implemented in 4F27E. The first thing that develops its resource in this automatic transmission is the solenoid block. It all starts with the abnormal and incomprehensible operation of the automatic transmission, which receives increased or decreased pressure. In second place is usually the speed sensor, over time it begins to "lie" and "confuse" the electronic control unit.