As I said, to temporarily stop the flow, there are only two screws on the valve (position 6) – you just need to slightly bend something, insert two new seals with the metal plate, and tighten it again – it takes about 5 minutes.
But I wanted the full treatment, and in the process, I also discovered the leaky exhaust manifold, which is now going to mean a lot of work.
I don't have a second car either, and I always have to go to VW by bike.
Okay, please provide the German text you would like me to translate into English. I will only provide the translation.