HP card reader drive coupling

[Divasson]

Hi,

I first get rid of the old material, making sure to get all residue out, and also trying not to deform the small Aluminium cylinder. This is the difficult part for the clumsy operator I am. However, perfect shape is not critical.

Then I put a good drop of E6000 glue in the hole of the cylinder. Then I assemble the motor and the shaft together into the cylinder, making sure of eliminating all excess of glue on the motor side (to avoid gluing the motor body to the shaft!).

In a moment it takes enough “body” to keep shape. Then I align it by sight. I wait for some more time and then I ensure straightness rotating the shaft and making sure it rotates well. Then I let it dry for at least one day.

Any micro-deviation from total straightness is absorbed by the E6000 elasticity. Also remember that the other extreme of the shaft is captured by the small hole in the card reader head’s body, so you know it will work fine - and it does!