Author Topic: Hub spanner  (Read 1962 times)

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Offline ste

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Hub spanner
« on: 05 Mar 2016 at 08:08 »
Having just reassembled the wheel, I seem to have both sides of the hub bearing carriers jammed after plating. Is there a specific tool to loosen these? Preferable with three or four points. I've tried a bicycle one but can't get any leverage.
Excuse the grotty photo.

Stephen

Offline cardan

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Re: Hub spanner
« Reply #1 on: 05 Mar 2016 at 08:58 »

Hi Stephen,

Usually it's the opposite problem: the hub and bearing cups get plated separately and can't be screwed back together. At least you don't have plating that will peel off your bearing tracks, and once you loosen the cups they will go back together again.

One side (with RH thread) is locked up dead tight and never adjusted. If that side was tight before you plated, leave well alone.

The other side, with LH thread and lock ring, is the one where all the adjustment goes on. This one needs to be undone.

Is the wheel built? If so, you'll just need a friend to hang on to it. If not, get a block of wood, and drill a hole the  through it the size of the central barrel of the hub with a hole saw, then cut through the circle across the major diameter. You now have a pair of soft jaws to hold the plated hub in the vice. Find or make a peg spanner to engage with 2 or more of the hole. Put a bolt through the hub to hold the spanner onto the cup, so the pegs can't slip out of the holes. Lubricate the thread liberally with your favourite penetrating oil. Let it soak in. With hub in vice, whack the spanner clockwise with a quick blow. Voila.

As usual, getting ready to hit the spanner takes about 2 hours. Hitting it takes 1 second.

Enjoy.

Leon

Offline ste

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Re: Hub spanner
« Reply #2 on: 05 Mar 2016 at 17:52 »
Many thanks, that will help a lot.
Stephen

 

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