QuickMill Espresso Repair: Remove Stuck Shower Bolt & Fix Leaking Group Head – FIXED

Learn how Riz from Coffeetechnix fixing and cleaning a leaking QuickMill 820 group seal O-RING OR155 by carefully removing a seized shower bolt (group bolt) and a jammed adapter disk. These parts often fuse together when a machine is neglected. In this step-by-step repair, Riz uses the right tools to loosen the stuck group bolt (avoiding breakage) and then employs a locking pliers to free the corroded aluminium adapter disk. Heavy coffee oils and scale are revealed in the group after removal, so he thoroughly cleans all components. Worn parts are replaced, and an exploded-diagram overlay shows the part SKUs. Finally, the group is reassembled (with the head off the machine for clarity) and the portafilter is tested to glide in smoothly, confirming the leak is fixed. • 0:00 – Issue Overview: Show the QuickMill’s leaking group and explain that a worn gasket or stuck bolt/disk is causing the drip. • 0:15 – Remove Seized Group Bolt (OT0900SD): Carefully unscrew the stubborn shower bolt from the group head using a sturdy wrench. (Over-tightened or dirty bolts can break off easily.) • 0:45 – Free Adapter Disk (AL0900DDF): Remove the piston ring and use a locking pliers to grip and twist the adapter disk. The video demonstrates using a to break the disk free without damaging the brew body (per QuickMill service tips). • 1:15 – Reveal Filth & Clean: Pull out the stuck disk, showing the extremely dirty group underside. Perform a deep clean of the brew body, screen, and surrounding parts with brushes and cleaner, removing all oils and scale (as recommended in QuickMill maintenance guides). • 1:50 – Parts Inspection: Inspect the removed lower brew body and check valve pin for wear. Replace the one-way valve spring (SPCHI2X9) if corroded. (Stuck gaskets are pried out – a common fix is to screw into a jammed gasket and pull it straight out.) • 2:10 – Show Exploded Diagram & SKUs: Overlay exploded-view diagrams of the group head, pointing out the part numbers. Briefly identify each replaced part by SKU. • 2:20 – Replace Worn Parts: Install a new group gasket (OR155), new lower brew body (AL0900GPL), fresh shower bolt (OT0900SD), new adapter disk (AL0900DDF), and new one-way valve pin (SPCHI2X9). Tighten everything to spec. • 2:40 – Reassemble Group (Off-Machine): Show putting the clean group back together outside the machine for visibility. Emphasize sealing the gasket correctly and ensuring the disk is seated. • 3:10 – Final Assembly & Test: Reattach the group head, insert a portafilter, and run water through. At 3:15, demonstrate the portafilter now gliding in smoothly with no leak. The repaired group head seals properly, confirming success. • 4:00 – Wrap-Up: Recap the repair steps and remind viewers that regular cleaning prevents these issues. End with a call-to-action (subscribe, like). Replaced Parts & SKUs: For clarity, the following genuine QuickMill parts are used (shown on-screen with exploded diagram): • Group head gasket – OR155 (gasket that seals the portafilter) • Lower brew body – AL0900GPL (stainless brew group insert) • Shower / group bolt – OT0900SD (the M6x1 bolt securing the group) • Adapter disk – AL0900DDF (the stainless-steel disk under the gasket) • One-way valve pin – SPCHI2X9 (spring check valve) All parts (OR155, AL0900GPL, OT0900SD, AL0900DDF, SPCHI2X9) will be available soon in our webshop: CoffeeTechnix.com. Hope this detailed repair walkthrough helps you with your QuickMill! – Riz from Coffeetechnix