QR Nut won't come off

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mark a.
Posts: 1349
Joined: 8 Jan 2007, 2:47pm
Location: Surrey

QR Nut won't come off

Postby mark a. » 19 Nov 2018, 11:40am

I want to replace a QR adjusting nut (acorn) on the front wheel of my utility bike with a spare light mount I had lying around (a bit like one of these).

However, the nut won't easily unscrew off the end of the skewer. Before I get out the pliers and brute force it off, I wanted to check if it was intentional e.g. a captive nut.

It's a Shimano internal cam QR on a Nexus hub brake front hub. Perhaps because it's a hub brake the requirements are different? Or is it most likely that it's all got a bit dirty / rusty / bent thread?

Brucey
Posts: 34832
Joined: 4 Jan 2012, 6:25pm

Re: QR Nut won't come off

Postby Brucey » 19 Nov 2018, 11:50am

if the end of the skewer poked out of the nut before, chances are that it has got 'bruised' and that is why the nut won't come off; it is meant to.

My suggestion is to remove the wheel from the frame, wind the nut on as far as it will go, and take a look at the threads on the end of the skewer. Chances are that a tickle with a file or a wire brush will sort it out.

cheers
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NATURAL ANKLING
Posts: 10369
Joined: 24 Oct 2012, 10:43pm
Location: English Riviera

Re: QR Nut won't come off

Postby NATURAL ANKLING » 19 Nov 2018, 12:40pm

Hi,
Or Rust even.

Get a M5 cheap die and wind it on by hand (after winding acorn nut out of way first) but use the die back wards, ie there is less chamfer on rear of die so you can clean thread further.

Rust wire brush, small tri-square swiss file / die. bit of oil and it will / might be stiff but be patient, clean up well when its off.
Swap acorn nut if another good QR skewer does not go on freely / swap QR for new.
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mark a.
Posts: 1349
Joined: 8 Jan 2007, 2:47pm
Location: Surrey

Re: QR Nut won't come off

Postby mark a. » 19 Nov 2018, 12:57pm

Right, that's good to know. I wanted to check there wasn't some weird reason why a non-removable nut would be a good idea. I seemed like it would be madness for it to be the case, but I've been surprised by "mad" decisions before.

mark a.
Posts: 1349
Joined: 8 Jan 2007, 2:47pm
Location: Surrey

Re: QR Nut won't come off

Postby mark a. » 19 Nov 2018, 2:13pm

Some finesse, cunning and brute force did the trick. Thanks :)