yes people! also I’m w126 freak! but unfortunately, I haven’t really wanted to make fun of myself for some time! some time ago my gearbox is broken… (it slipped so much that no more gear went in and at all came to a power transfer at 5000 revolutions) so I got a “new used” one. that’s why I had a bad amount of oil when it was installed. so out with the thing… the mechanic then somehow got me the oil. pump converted, because the allegedly leaked was. well, densely bit not right, but it “sweats” only and with it I can live. then first n few weeks everything was good. the gearbox switched and did not slip through. then, suddenly and without a reason for me, the gearbox doesn’t switch anymore! I can only drive in the second gear! since now two weeks it goes like that and the funny thing is that in the time (still driven daily) about three times pl It doesn’t seem to be related to the operating temperature, since it once switched in the completely cold condition and once in the (really) warm condition again. otherwise it doesn’t switch at all at the moment. neither cold, nor warm. one specialist told me that there are two possible causes for these symptoms: either the gearbox is dirty or it has torn a brake band. has one of you similar experience I would like to expand and clean the gearbox now. if any of you have documents to build such a transmission, or even repair instructions, I would be very grateful. would be happy about any literature in this direction. and of course also about your opinions on the problem. oh yes, it is a 500sec, ez12/86 (mod. 87). already many thanks, raphael