I dissembled a printer/scanner for parts.

This is a belt and roller and I think it was used for the scanner.

I can not figure out how the belt fits on the roller?

The belt is a continuous piece and the pin for the roller will not come out unless it is forced out.

Can someone solved the mystery of how to mount the belt?

enter image description here

  • 1
    The image of the roller is unclear. However, does the roller rest against the outside of the belt?? Commented Jun 16, 2019 at 6:13
  • I agree with @DrMoishePippik -- could this roller just be used to push against the outside of the belt, to add tension? Here's an image. That would explain why you can't loop the belt through or around the roller. Commented Jun 16, 2019 at 14:05

1 Answer 1


The belt doesn’t feed around the roller. That roller is used as a tensioner, so the roller is entirely inside the belt with the roller pushing the belt outwards to keep it tight.


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