Sachs 50/2 Brake mechanism is not working after rebuilding the engine

J

japisila

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5 Mai 2026
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Jupiter TT with Sachs 50/2
Please any advise, I'm totally new with Sachs engines.
I have a problem after rebuilding my Sachs 50/2 engine. Everything else is working smoothly, both two gears are switching nicely, clutch is working and starting when cycling forward. But when I turn pedals backwards it is not turning brake mechanism at all but just spinning freely. What could be wrong and do I need to split the engine once more. Please see attached video of failure, there feels no resistance at all when turning pedals to backwards. I also attached a couple of pictures when it was put back together. I have changed all the oilseals(NTS brand with metal cover), block seals, clutch discs, and clutch cover. There is not yet oil inside the engine just well lubricated parts.
 

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