Hp-41C card reader - dead

[Erik-M]

Sometimes you need to adjust the pressure by turning the axis because the o-rings are different from the original but how did you clean the axis and install the o-rings without removing the motor ?

But if the card doesn't make the contacts work there might be some stuff from the original wheel in between. You have to open the drive slot assembly, see pics here https://www.hpmuseum.org/cgi-sys/cgiwrap...gi?read=57
Be carefull things fly out, fortunately not needed in most cases but maybe it is in your case.