BMW spare parts: BMW used parts: Repair BMW: If there were problems with coupling

The given way can save to you from 20$ to 100$, but do not forget what to go by this car then to you. BMW replacement parts, it is always better, though and is much more expensive.

Attention! Before something to remove or change I recommend to check up simply level of a brake liquid in a tank. If necessary to add and pump over coupling there is nothing not removing.

Recently has bought BMW 730 E32 and I first with what has faced - unexpectedly for me for the second day of my driving the coupling pedal has started to come back badly, and then and has at all sunk in a floor. Thanks to it I nearly have not caught up «Ме … 600 SEL» trying to return her hand back.

After that I have decided to be engaged in repair. Has put the car in garage and has started to search for malfunction …
Has climbed under the car and has seen varis bmw parts that the working cylinder of coupling all in a brake liquid, and also all surface of a box under it. On cylinder hissing by pressing a coupling pedal it was clear, that cuffs in it has died. Has removed a cover from a bmw used parts flank of a brake liquid together with a float. Has started to remove the working cylinder of coupling - it fastens on two nuts. Bottom turns away easily, and here the top has forced will work - very difficultly подлезть. Having turned off both nuts, I remove the cylinder and I try to turn away a brake tube. After several attempts I have thrown this employment and have decided it not to turn off, it is a little of it to straighten and try to change cuffs directly there.
Having removed the cylinder, has removed from it it can appear too torn and most likely, to it you will not find replacement. It is possible to put and fragmentary (пыльник protects the cylinder from dirt and dust hit), but service life a cuff will be little bit less. Then, a companion on my command has pressed a coupling pedal, and here, the piston with a cuff at me in hands (ATTENTION! Remember as cuffs sat on the piston).
Has started to search cuffs and not having found it in one shop (everywhere suggested to buy the whole cylinder), has gone on the automobile market and has picked up the similar. It has appeared it of cuffs has approached on internal diameter, but was little bit more on external, than native. To select cuffs follows, preliminary having measured the shtangel-compasses. The analogue should have internal diameter little bit less native or same, and external it is, little bit more, on width of special councils is bmw suspension parts not present. The main bmw salvage parts thing - that it normally sat on the piston. But it is not necessary to forget, that native new parts foe bmw it will be always better than any ours.
Taking the piston, a plot of cuffs on it. ATTENTION! To put on cuffs it is necessary correctly - just as the native earlier sat. The most interesting now has begun - it is necessary to insert the piston with a cuff back into the cylinder. For this purpose it is necessary to turn off the union on the cylinder. A screw-driver taking more thin in one hand, a core in another, the beginnings it to insert. A core I press the piston pressing it in the cylinder, and with a screw-driver on the sly I fill cuffs on a circle (to fill better with a stupid subject and it is very cautious not to tear cuffs). Through some attempts of cuffs rises on the place. I put пыльник the cylinder and all the rest into place. And already I twist the cylinder, then the union.
Now it is necessary to pump over only coupling until the pedal of coupling will not start to work as it is necessary, and from the union the made foam liquid or simply air will not cease to go. Prorolling procedure is carried out also as on any our car - one swings time six-seven, to press it is necessary quickly, to return (probably at first a hand) it is necessary slowly, then holds a pedal. The second person from below turns off the union on one-two turn, lowers a liquid and again twists the union. The third person adds at this time a brake liquid in a tank (ATTENTION! Do not regret bmw replacement parts).
Probably it is necessary to resort to reception of compulsory prorolling at first:
The first person lifts a coupling pedal upwards and after the coupling pedal will appear at the top of the second the person turns off the union, and the first at the command of the second, (Protect eyes!) presses a pedal as it is possible more sharply, and keeps it in the pressed condition. After pressing, the strong stream of air with splashes bmw auto parts will be pulled out from the union then we twist the union, we lift a pedal, we add a liquid in a tank (I do not advise to add a brake liquid flowed out of the union). This reception can be repeated until in a coupling pedal not to appear elasticity.
After all done all should work normally.

There is a by-effect: during the first 10 – 100 kilometres the pedal can become again soft and fails (by sharp pressing all should work normally) a little. It though and is unpleasant, but it is not terrible - there is a grinding in a cuff.

Further all should be normal.

The given way is tested on 730 – E32 and 316 – E21.
In theories, this way should approach for any BMW.