Fuel Injector Disassembly and Assembly

Hi,
Instead of a new monitor, I will be receiving a set of new nozzles as replacement parts in the next few days. Of course, I would also like to take a look at the inside of the old nozzles.
The question is whether I can easily reassemble it so that I can give it to my parts guy with a clear conscience. I'm not talking about repairing or adjusting it, just assembling it in a way that doesn't interfere with any subsequent overhaul.

Hello.

If you're worried that they won't accept the old ones if you've tinkered with them, I can reassure you. In my case, they didn't even look at them. It could have been a dead cat in the bag .
The technician at Bosch mentioned that everything inside the injectors is replaced, and only part of the housing is reused. So, it shouldn't matter what you adjust inside, and if not all the parts go back in, it probably won't matter either. The main thing is not to damage the housing.

Regards,
Jan.