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Put the nut on that pulls the plate down a few turns first.
Lock the fan in then tighten up. Fan and seal change normally takes half an hour.
Moved to private forum.
Use a spare m10 nut to clamp the plate down and give yourself a touch more room..
Reply to the thread, titled "Fitting new seal. Worcestor 28i junior" which is posted in UK Plumbers Forums on Plumbers Forums.
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