Removing fossilized mounting bushing from Orthophonic ?

Share your phonograph repair & restoration techniques here
Post Reply
User avatar
De Soto Frank
Victor V
Posts: 2687
Joined: Wed Dec 01, 2010 1:27 pm
Location: Northeast Pennsylvania

Removing fossilized mounting bushing from Orthophonic ?

Post by De Soto Frank »

I have a couple of decent pot-metal Orthophonic reproducers, that are in need of new rubber mounting bushings.

Are there any tried & true techniques for removing the old, ossified rubber without damaging the surround pot-metal ?


I've seen a few Orthos come across ebay lately with the mounting sockets busted-out by heavy-handed attempts at this. :shock:


Would appreciate any good shop kinks...

:coffee:
De Soto Frank

User avatar
barnettrp21122
Victor IV
Posts: 1610
Joined: Thu Jan 08, 2009 4:19 pm
Personal Text: "Did you ever stop to think that pleasure is a duty?" (Victor sales pamphlet)

Re: Removing fossilized mounting bushing from Orthophonic ?

Post by barnettrp21122 »

Here's MicaMonster's website describing how he handles removing hardened rubber. I also recommend using his method of replacing the rubber connector with silicone and white gasket material, using the brass collar from the old connector. I've done three. It's not difficult and I'm happier with the results than with the harder rubber replacements available. I use black silicone sealer.

The link:

http://www.lagparty.org/~wyatt/rebuild-orthophonic.html

Bob
"Comparison is the thief of joy" Theodore Roosevelt

His Master's Voice Automatic 1A Exponential Gramophone Demonstration:
https://www.youtube.com/watch?v=Qi70G1Rzqpo

User avatar
Retrograde
Victor III
Posts: 959
Joined: Sat Sep 04, 2010 1:47 pm

Re: Removing fossilized mounting bushing from Orthophonic ?

Post by Retrograde »

De Soto Frank wrote:Are there any tried & true techniques for removing the old, ossified rubber without damaging the surround pot-metal ?
I've done it using a hair dryer to warm-up and soften the old rubber. Still requires some careful digging & working out of the material.

update: Now that I think about it, I believe I did this on Victrola #2 and #4 reproducers, may not have done this specifically on a pot metal ortho.

Post Reply