Re: The Duchess Project: 1940 Super 8 Convertible Sedan

Posted by Owen_Dyneto On 2022/4/25 8:46:16

No, the brass fitting is not pressed onto the MC, it's either threaded on or held in place by special brass washers and a special bolt, normally the latter though I can't speak to your specific model.

To simply change switches, it is not necessary to change or drain any fluid, and often it's not even necessary to bleed the system after installation.

The thread of the switch and fitting is an NPT thread, not a conventional thread. So if it is damaged, replace the fitting or bolt, do not attempt rethreading even if you have a proper tap.

Don't use any fluids that might leave a residue and contaminate the brake fluid and alter it's properties. If you want to clean the brass fitting to inspect it, remove it from the MC first. And make sure it's clean and dry before reinstalling.