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In this video, our technician will show how to replace the cuff on the upper piston and the seal on the lower piston of the brewing unit, using the example of Nivona CafeRomantica NICR 626 (also relevant for older Bosch and Siemens brewing units). Brewing unit cuff: https://service-cm.ru/shop/zapchasti-... Seal under the piston: https://service-cm.ru/shop/zapchasti-... Lubricant: https://service-cm.ru/shop/sredstva-d... Coffee machine forum https://forum.service-cm.ru 00:00 What brewing unit is the video about? 00:47 What are we going to change? 01:07 How to disassemble the ZU 04:41 Replacing the upper piston cuff 08:25 Repairing the lock in the ZU 09:44 Dismantling the lower piston 12:16 Replacing the lower piston seal 15:03 Assembling the lower piston 15:57 Assembling the brewing unit 16:20 How to unlock the ZU? 17:42 Recommendations and conclusion