Adjusting Brake Regulator Options

[bbrock]

I just finished rebuilding my brake regulator with the PMB DIY rebuild kit and it looks like new. Only thing left is to set the switch to 525 psi. I'm guessing I could send it to PMB to have them set it, but wondering if this could be done locally at a brake shop. Anyone know?

[bbrock]

Thanks for the vote of confidence (IMG:style_emoticons/default/smile.gif) That's good thinking about bench testing. You are right about cost of equipment being more than just paying to have it done. I'm mainly wondering if this is the sort of equipment any good brake shop would have. If I went that route, I would expect it done with my supervision. A lot of shops around here are good about that sort of thing. My only reluctance for sending it out to be set is that I have to factor in about $30 for postage to get the part there and back. I'm sure you are aware how quickly shipping costs eat into the budget of a full car restoration.

The other thing about these regulators explained in the factory manual and also mentioned on the PMB site, is that they operate as a spring loaded on/off valve. The spring pressure is supposed to be set so that the valve activates (turns off) when it sees 525 psi at the inlet. That suggests to me that a bench test would only require one gauge to measure the pressure where the valve activates, but they don't give a procedure for that.

Time is not an issue on this. It looks like I'm in final assembly on my resto, but I'm not. I still have to block and paint the exterior of the car but can't do that until early summer when the weather turns favorable here. I'm spending the winter trying to turn the car into a roller and assembling as much as I can without interfering with the final painting. Still many months of toil ahead. (IMG:style_emoticons/default/laugh.gif)