The Stovebolt Site Forums The Shop Area The Electrical Bay Voltage Regulator mounting

Got a new 12-volt voltage regulator for my 51 from Classic Parts. Comes with 3 rubber mounting nuts...NOT the grommets with the brass insert, I know where those go.....but what they call the "Mounting Nut. Has the nut up inside this rubber piece that is about an inch long. Tells me, cause of the design, these would be used to isolate something somehow. If the screws that mount the regulator are going through the firewall, what would be the purpose of these mounting nuts? And why not also run a ground wire, from one of these mounting screws, to a better grounded spot besides the firewall? Just asking cause I don't know. Classic sells these nuts separate, they call them Cargo Lamp & Voltage Regulator Mounting Nuts.

I do know that the old v/r that came off (a couple of years ago) did not have these mounting nuts anywhere that I remember. Did have the grommets with the brass inserts. I know this cause I still have the old v/r.

For best operation, run the ground wire from the regulator body all the way back to the generator housing. Most generators have a threaded hole in the housing for a ground screw. If it's not there, use one of the through-bolts that holds the housing together and attach a ground wire with a ring terminal under the head of one of those bolts. The regulator provides the ground for the field coil circuit, and I've fixed dozens of erratic charging systems by simply giving the regulator and the generator a common grounding wire.
Jerry

Mike, PMed you again. See what you think.

Thank you Jerry. I'm a big believer in GOOD grounding, (and I think I read somewhere that you are also). Learned that on the round track cars (you might be familiar with those?).

Me and bartamos hunted and searched for a picture or drawing showing these insulated nuts being used....it ain't there that we could find.

We shall proceed on then...................

If the parts you're referring to are bullet-shaped rubber pieces with a nut inside that expands when a screw is tightened into it, you've got mounting grommets for the regulator used with the "Delcotron" alternator- - - -the first-generation alternator system before the 10-SI internal regulated alternator came into being. They could be used with a DC regulator for extra vibration protection, but they're not necessary since the DC regulator already has vibration isolator grommets.
Jerry

Finally found one picture, of a 62 Chevy car with them, and yes, that's what they are for. Tighten the screw down and they expand inside a hole. Once they are compressed, it looks like a grommet in the hole with the nut inside. But this voltage regulator fits a lot of years worth of vehicles, so I figure they are included in case they were to be used. But we ain't using them........

Thank you and bartamos.