Shimano 10 speed cassette

[andymeek]

i recently removed my 10 speed cassette and all came away easily. on reassembling I have been left with a thin metal spacer? most of the spacers are plastic apart from the smallest on the ring. What have I done wrong to end up with this as a spare?

[xerxes]

Is it Campagnolo, SRAM or Shimano?

In any case, check out their web sites, they generally have a technical documents section with exploded views etc. so you can work out where it goes.

I once disassembled a carburetor and had dozens of bits left over after I put it back together. Not surprisingly it no longer worked, got it working on the second attempt with no bits left over.

[andymeek]

Thanks for replying, it is shimano. I'll check out the website now.

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Found the diagramme, bike up n running again.

[cyclerUK]

The very thin spacer usually goes on the hub first before the cassette. But not always.
My tech' document says there are some hubs that don't require it.