ORIGINAL DISCBRAKE: ARE THE 3 PINS EXCHANGEABLE ?

[Soulpunk]

original discbrake: are the three locating pins exchangeable ?
can they be just pressed out ?
(the pins on my brake are in too bad condition and i prefer to
repair the hub than buy a new remade one)

[Knowledge]

I remember coming across an original hub where the previous owner had tried to replace the three pins. I got the impression that he had got them out OK, but had wrecked the casting by hammering-in the new pins too hard.

Muppet.

I guess the new pins only need to be pushed in, but with a couple of drops of bearing glue.

[RCA_Racer]

The pins are shown as a spare part in Innocenti Parts Catalogues, held in by what appears from looking at an NOS window side hub, as wire circlips.

That means that the circlips would need to be removed first, not an easy task in itself even on an new one with no paint obscuring them and then the pins would be knocked out from the inside, after previously soaking them overnight in a releasing agent such as Wurth Ultra 2040 and then carefully applying some heat to the alloy. Depending on how corroded in these are, it might be advisable to to try to rotate them with a pair of molegrips too

Although the parts illustration shows the pins to be straight, I would imagine them to be stepped, otherwise how would they hold in place?

You need to really talk to an old school racer like Guy Topper as he still employs the type of homemade disc brake that required the removal of these pins to allow bolts to be inserted through the holes to mount a larger disc brake to

Hope that helps