Re: Bendix Treadle Vac Study- Serioius Business!!

Posted by HH56 On 2010/12/18 23:20:35

A good question but the only thing I would imagine a decent rebuilder would clean that way would be outer surfaces. If he did any of the internal items using Star Blast and roughed things up, I'd really question their competency. Glass or walnut shell type media, being fairly soft, I doubt any damage would be done--although getting all of it thorougly cleaned out might be an issue. Star Blast, being sand, would be fairly aggressive.

The piston if roughed up would wear the seal. If the internal casting surfaces were done, then I think the only place that would be adversely affected if larger would be the seal outer bore area. A leak at either, assuming the gasket has closed the relief port as we have found, would wind up feeding fluid into the vacuum portion. Unless bad enough the fluid was sucked dry in a short distance, would wonder if there would be the sudden failure people have experienced with either.