[Rendel Harris]

Never had this problem before (how many men have said that?), but finding it absolutely impossible to get the lockring off a Shimano HG-500 cassette, which I need to do to replace a broken spoke. It’s not that old (two months/1700 km) and has been scrupulously oiled throughout its lifetime but I just can’t budge it, even with a breaker bar added to the spanner holding the lockring tool. I know the dodge about fitting the tool into a table vice but unfortunately I don’t have access to one. Any tips gratefully received!

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[mark1a]

Couple of things I’d try –

Couple of things I’d try – squirts of WD40 Penetrant (https://www.wd40.com/products/penetrating-oil/) and/or GT85 onto the lockring, and leave for a couple of hours. Then the usual long bar/gentle percussive maintenance (hammer) methods. Failing that, spray something very cold  (such as a cold spray) directly onto the lockring, avoiding the hub as much as possible, then try the bar again.

Good luck. No warranty expressed or implied. Methods above have previously worked for me on a seized seat post. Your mileage may vary.

[Author]

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