The transmission of the Mercedes 126 has a design very robust, as expected. He was once one of the best units available, the use of the legendary Porsche 928. But as with all other systems on these cars, we should not let the reputation of longevity often takes us to complete the service.
As a general rule should transmission fluid be changed every 30,000 miles. Unlike modern cars, where the tendency to do away with the doors to access the serviceTogether, these transfers are Mercedes-drain not only the pan, but also the torque converter. In other words, we are able to remove almost all charge washer fluid without resorting to gimmicks such as energy.
During the hot engine oil should be changed, change the transmission fluid is better if hot only protect the mechanics of a real danger of scalding. The steps are as follows:
Take the front of the car on ramps or stands on the support.
Make sure thatthe torque converter drain plug is accessible. Unless you have not had much luck, usually get the blip on the starter motor to the plug to come into view through the access hole. It allows the rest of the journey "went" with a large screwdriver. It may also be necessary to remove the crossbar between the front subframe ("dog bones"). The six mounting screws are 17 mm ends are tightened to 45Nm.
Loosen the transmission drain pan plug with an Allen key 5 mmSocket, then you may run out of the pan into a suitable container. If possible, collect all the liquid in a container and then measure, this will help us to dispense the right amount when charging.
If the pot has stopped draining, remove the plug of the torque converter (the same size of the pan) and allow to drain the torque converter. There is much more fluid than the pan.
They stopped as the two main currents, loosen the six screws hold the pan (13mm head) andCarefully remove the type of pot. Do not pour the remaining liquid all over yourself! Resist the temptation to clean the inside with a cloth: We do not want to be down here.
Remove and replace the filter transmission owned by Phillips.
Clean the pan with a cloth and replace the rubber gasket ensures a good measure of all things. Put the pan, tighten the screws slowly and evenly to 10 Nm (8Nm The manual says, a little 'moreis in order. But please do not overdo these pots can be deformed and are not cheap).
Replace both drain plugs with new gaskets copper crush. Factory-spec. is 14Nm, or about 10lbs/ft. Close with a 3 / 8 drive works well. If you remove the crossbar, then replace it, taking care of all the threads of the screws.
(Optional) Crack open the trans cooling lines to the radiator (17mm spanner) and download the small amount of fluid from this area. Replace the line if their condition is serious;They are not expensive. Tighten all connections.
With a fine filter, add four quarts of fresh Dexron-Mercon (ATF) through the tube. If you can afford it, the use of synthetic liquid: it helps reduce interior temperatures by friction and heat is the enemy number one for automatic transmissions.
Start the engine and slowly add another three liters.
Back in the car on the ramp, you go through all gears, stopped for a few secondsbetween each gear, then check the fluid level. You do not want to be the minimum number of points at that stage. Gear Oil greatly expands hot, the reference marks on the rod calibrated to the hot liquid. So it's good to be an inch or so below that mark, while the liquid is cold.
Driving the car for about 20 minutes (yes, at least as much) to heat the fluid completely. Transmission fluid takes longer to heat up when the engine oil or coolant, and requires the friction ofreal driving conditions up to temperature. Check the fluid level again. Be sure not to leave anything on the dipstick before putting in the tube. Each level of the marks is in order, but in no event exceed the maximum level we want. If you add the liquid must do so with very small increments and try again.
If synthetic fluid is used, it is possible that the changes are much closer. Compensate, if necessary, adjusting the valve on the modulatorthe driver's side of the gearbox. Turn the small wrench counterclockwise until the shift quality to your liking. Remember, too bad for the clutch slipping inside.
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