> Hi Folks,
> Does anyone know how to determine if a master cylinder is original?
>
> Also, when putting brake lines together should there be any kind of thread sealant or just metal to metal?
>
> Thanks,
> Jim
Jim,
As a resident of a rust-belt state. Do yourself and the next owner a favor.
As you will be doing a flush and bleed with the master cylinder change, take the time to get new rubber caps for all the bleed screws (6). And while
you are messing with it, take each bleed screw out and clean it and wrap it with teflon tape. This is not for system sealing. It is to keep:
A - The road water from getting in to the threads of the bleed screw and corroding them, and
B - The brake fluid leaked during bleeding from getting in to the threads of the bleed screw and corroding them.
I started doing this about 30 years ago and have not broken a bleed screw that was so treated yet. (I was using pipe dope, but Chuck Boyd suggested
the teflon tape and it works even better.)
While the system sealing is all done by the flare, a coat of anti-seize or pipe dope on the line nut threads will simply make life easier for someone
else done the road.
Matt
--
Matt & Mary Colie - Members GMCMI, GMCGL, GMCES
'73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
Now with both true Keyless and remote entry
SE Michigan - Twixt A2 and Detroit
