Re: A Spec for Turning Brake Drums

Posted by Joe Santana On 2018/7/9 15:02:59

Put another way, so the same govt spec is for older Peterbilt truck brake drums as for a '50 Ford?

Anyway, I'm still wondering what the non-govt guideline was for turning brake drums back in the day. There must have been something.

Packard brake shoes/backing plates have tons more adjustment than .060 and the super senior drums are like 1/4" thick.

Plus speaking introspectively, it's relevant today, when buying or selling vintage brake drums. And major vendors like yours, James, probably have brand new drums for popular models, suppose you have something exotic or need ambulance drums? A rusty crusty one arrives. What do you do? Tell the kid at the brake shop that the fed reg is not to turn the drums more than .060" At A Time?

It seems someone would know how drums were judged as usable or not in the '30s and '40s. But I guess if they were cheap and plentiful, it didn't matter. The only thing I vaguely remember was the question How many times have this drum been turned? Like 4 times was the limit or ?

Isn't there anybody really old on this site?