New to the hobby.When I bought a standard phonograph,I noticed that the motor mount bolts (three bolts mounted from the top of the base) were lose.I see that they are frozen in place from the bottom.The nuts are resessed in the base so no tool will fit to hold them.The motor moves around in the base.I tried penitrating oil with no success.I don’t want to apply heat for fear of ruining the paint on top.Any help would be appreciated.Thank you.
Post by lucius1958 on Jul 11, 2021 21:32:03 GMT -5
On my Standard B, the motor mount bolts are only accessible from the underside of the bedplate: there are no nuts, just threaded lugs in the casting. Perhaps some photos would help? Which model Standard do you have? The Antique Phonograph Society's web page has a useful article: A Spotter's Guide to the Edison Standard, which details the various models.
Last Edit: Jul 11, 2021 21:50:28 GMT -5 by lucius1958
Post by lucius1958 on Jul 11, 2021 22:06:30 GMT -5
OK: on reference to the article stated above, you probably have a model A, or even a "suitcase" model. To access the nuts, you may have to chip out the old rubber insulators: that may enable you to get a wrench (or pliers) in there.
As for using heat: Edison used asphaltum for their bedplates: I have had to use a blowtorch to disassemble a model A Triumph, and it did not affect the paint at all.
I hope this is helpful.
Last Edit: Jul 11, 2021 22:15:02 GMT -5 by lucius1958
Cold works often just as well as heat when trying to loosen screws, or combining heat and cold. You could try to use something like Freeze-Off from the automotive store to cool down everything and if that's not enough, use a soldering iron to heat either the screw or the nut. Good luck!
On most Standard "A" models (new case type). The bolts are held in by a different setup than later "B" model Standards and later.. I find that Usually, I have to cut or drill out the frozen bolts in order to replace them... It can be a slow and tedious job, but is totally doable....just don't try an rush it or you will damage the bedplate... Tony K. ) Edison Collector/Restorer