Do-it-yourself Renault Megan automatic transmission repair
In detail: do-it-yourself Renault Megan automatic transmission repair from a real master for the site my.housecope.com.
Disassembly of the hydraulic control plate.
We unscrew one thick plate.
Unscrew the oil pressure modulator.
We unscrew and take out the control valves.
We unscrew the second plate.
We measure the distances of the adjusting screws and mark.
Gear selector valve pistons.
We wash everything, blow it with air and put it aside until the box is assembled. We check all the valves of the modulator. I washed the valves, because the cores went tautly in them. An electrical circuit was found for the box, I checked the braid. It turned out that the braid had been cut in three places and spliced with cloth tape. I found an open in the second gear solenoid control. Rebuilt the braid as expected. When the rest of the parts arrived, I started assembling the box.
Box body after washing and welding.
Replacing differential bearings.
The satellites are easy to remove.
Install the differential in the crankcase. Insert the axes.
We tighten the differential bearings and counter.
We install the speed sensor with a new cuff - an O-ring.
We assemble the hydraulic control plate. Replaced only the filter.
Installing the stove in the box.
Oil pressure sensor. Unfortunately, I didn't have a black sealant. Collected on red.
We disassemble the oil pump and change the oil seal.
New and old clutches, new and old steel ring and new locking ring.
Clutch package 1-3 gears with new clutches.
In the center, you can see the screw locking the shaft nut.
We put the gear selector rod, parking stopper, gear and tighten the nut.
We assemble the drive shaft in the reverse order.
New oil pump gasket.
The oil filler plug has been modified to fit the dipstick.
Video (click to play).
New heat exchanger rings.
I put the box in the car. Everything worked. It does not give errors, it switches smoothly, smoothly.
Renault Megan 2, 1.6 engine, automatic transmission. I took a new one in 2009 (the car was produced in 2008), traveled a little less than 60,000 km for three years. All three years, as the last donkey, he was serviced by an official Major dealer (on Tsvetochny Prospect) in which he took the car. I hoped that since this is an official dealer, then at least they will do their work normally, well, not far from home + a discount card. Although every year the disappointment in this place grew more and more.
Last Friday I parked the car at work, after a couple of hours I sat down again and started looking for it, switch the machine to D or R and there is no result. The car is stationary. Shows everything as it should on the computer. I put the selector in D, on the computer D lights up, I put in R on the computer R is on, but it does not go. I moved the lever to position N, called a tow truck and took everything to the same Major. Oh, and another extremely interesting little thing, five days before the breakdown, went through MOT. The car was taken and diagnosed and ATTENTION. They said that everything is in order for me in the diagnosis, but to my question and what to do, they said that with similar problems they (Major) in such cases send an alleged request to those. support for Renault (Avtoframos). Five days later (including Saturday and Sunday) they called and said that it was necessary either to change the box, or to sort it out (though they don’t know what the problem is in the automatic transmission without overhauling the box). Although I have a suspicion that they already knew this in the first hours after taking the car. To my question who will do this and how much it costs, they said that they have a company with which they have signed an agreement and it will cost from 90,000 to 120,000 rubles. From the above, I have a number of questions for you, dear readers.
1) What do you think, could at a simple MOT (without changing the oil in the automatic transmission, they said that they did not touch the box at all), spoil the automatic transmission accidentally or on purpose? A little less than a year ago, before the above events, I changed the valves in the box ...
2) Who had a similar problem, is there any chance that the problem is actually not in the box?
3) Who can advise a place where they carry out high-quality automatic transmission repairs for Renault Megan 2?
4) How long do you think the repaired box "takes a long time"?
Many thanks to everyone who responded.
Post has been edited Eugene (Megan 2 1.6 automatic transmission) – 2.8.2012, 21:34
It should be said that before driving, you should warm up ANY machine, do not “tear” until the car is fully warmed up. The DP0, AL4 automatic device is assisted in this by a special thermostat, it is both mechanical and electrical, depending on the years of manufacture.
In this material, we will try to consider one of the ways to solve the problem of automatic transmission shocks, transition to emergency mode and other delights such as pressure spread.
I would like to repeat and reiterate that it is NORMAL for this box (after all, this is a development since the 80s, it is just constantly being modernized)
Light tremors in AL4 are acceptable! This is truly a design feature of the AL4. There are parts in the automatic transmission that have excessive inertia;
Check engine mountings! Before dealing with jolts, be sure to check the condition of the engine mountings. If the pillows are worn out - of course, replace;
Attention to the level and properties of the oil in the machine! Every 20 thousand runs, check the oil level or make a partial oil change. Partial replacement is done without disassembling the machine, in five minutes, 4 liters. Replacing and checking the level should only be done by competent specialists, since the correct oil level in AL4 is set according to the regulations for half a page;
The planetary of this box is extremely reliable, in my practice I have never seen a DP0 with dead gears.
• Drain the automatic transmission oil. • Disconnect the battery. • Place a container for collection for subsequent disposal. Drain everything.
• Disconnect the connectors of the electromagnetic secant (sequential) valves by carefully lifting them with a screwdriver; • Disconnect 6 solenoid secant valves; • Remove 7 screws (3).
Old manufacturer ACUTEX, new Borg Warner. The main differences, the new solenoid valve has a black connector and is held together by 4 clips, the old one is a white connector and is held together with a knurled bezel. Outwardly - everything, inside it is also slightly modified, the main differences in the frequency of the valve operation: ACUTEX - 50Hrz, Borg Warner - 100Hrz.
• When replacing the valves with a new sample, they must be activated through the Peugeot Planet 2000. Old software versions of AL4 computers are not compatible with new EMC! • EMC for a new sample are replaced by PARNO!
• After removing the valve body, flush all valves (top and side);
• Unscrew 8 torxes, remove, wash. Under the lid there will be a small filter and an electrovalve-modulator, remove it, wash it.
• Putting it up in the reverse order.
3. Reinstalling the valve body
• Before installing GB, service box recommends replacing these two rubber bands;
• Be careful not to get the wiring under the valve body, otherwise it can be damaged and you will have a short circuit to the body.
ATTENTION: Make sure the mechanical valve (6) fits into the shoulder (A) of the toothed sector (16).
• We put in place, otherwise the gears will not change, again carefully we check that the wires are inside;
• Refit the fixing bolt of the hydraulic unit (Tightening torque 0.8 da.Nm) Follow the sequence shown; • Connect 6 secant solenoid valves; • Ensure correct operation of the gear change mechanism in all positions. To do this, connect the battery, turn the key to the first position, press on the brake and see if all gears are turned on correctly;
Install: • Crankcase (2) with a new gasket; • Crankcase mounting bolt (1) (Tightening torque 1.0 da.Nm); • Air filter sleeve.
4. Fill in oil, check the level
After assembly, fill in new oil. Mobil ATF LT 71141 (earlier they were released under the esso and total brands, but total was bought by mobile).
• Fill in oil, 4.5 liters. Bring the automatic transmission oil temperature to 58-68 degrees. (Usually turning on the first fan speed or using the Peugept Planet 2000); • With the engine running: Remove the level plug (6 edges, 19 mm each).
If the oil flows out in a thin stream and then drips, the level is correct.
• Oil flows out in the form of drops, and then stops flowing; • Switch off the engine; • Allow to cool; • Add 0.5 liters of oil; • Start the procedure over again; • Periodically replace the sealing gasket of the drain plug; • Tighten the plug (Tightening torque 2.4 da.Nm).
Memo: Filled oil volume: - after draining the oil - 3.5-4 liters.; - after draining the fluid and replacing the hydraulic block - 4-4.5 liters.;
1. The valve body, the second screw from the right, for a hexagon, regulates the pressure. My pressure rose by one full revolution by 0.3 (in case the pressure does not rise after flushing). The optimal pressure is considered to be 3 bars at XX in D, in fact, it can be in the range of 2.55-3.0, this is normal, but 2.55 is the lowest threshold! After rinsing, you can half turn tighten up… During the operation (that way five years) the spring got hooked a little. If it still does not reach the required pressure, then simply drain the oil again, remove the valve body cover and, without removing the valve body itself, tighten it again. But this SHOULD be done very carefully! Because there are a lot of complaints, I want to WARN you IN ADVANCE, if you twist it, then twist it by a quarter, or even less. The reason is trivial, twist more, there will be a large pressure, the standard pressure at XX is 2.8-3 bars, can you imagine what will happen to the box when 6.0 bars are wound? Better not to know!
As you can see, basically only one valve wears out. Photo 2.
Disassembled valve. So the valve does not need to be disassembled just to be removed, rinsed and swapped. It is recommended to replace the O-ring art. 2578.13 Photo 1.
The location of the temperature sensor, if this dachik is not working properly, then the automatic transmission can also get into emergency mode. Changes with the scythe.2529 26 (but it's better to look at the wine).
Swap valve 2, consisting of an o-ring (B) and valve (2), art. 2574.16
Renault analog 77 01 208 174, the rest of the valves under number (A) are removed one at a time, washed, cleaned and replaced (so everything is in turn). Do not touch the rest of the adjusting screws.
If you buy a new one, you change the EVM pressure control valve.
As it turned out, this GB is not only a problem with two valves, but also the rods themselves, in some places they are simply not tight. In order to fix this, the European supplier to the conveyors of automotive giants and the manufacturer of parts, SONNAX, made a repair kit, one BUT, it can be delivered in high-precision technology, because boring of several channels and replacement of standard pushers with more advanced and sealed ones will be done.
