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 Post subject: Phono lubrication rules of thumb?
PostPosted: Jul Sun 07, 2019 9:42 pm 
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Joined: Mar Thu 12, 2009 2:20 am
Posts: 1504
Location: Dayton, OH
Hi all,

Does anyone there any general rules of thumb wisdom for re-lubricating a turntable they can pass on? (In this case an Admiral RC600). eg: Grease anything that slides, oil anything that spins? Don't get carried away with it though. Those sorts of things?

This particular turntable looks like it got over-lubed at some point as there was lubrication on set down index assembly which the manual (Beitmans '53) says specifically to NOT lubricate. I've gotten it apart and degreased, but since whom ever got slap happy in the past, going by what was previously lubed isn't helpful. (Yes, I also see where it says not to grease the trip slider)

I was thinking of using some 3 in 1 for most of it, WD-40 for the rest. ;-) <I kid! I kid!>

In all seriousness, I've got some sewing machine oil for the motor, some teflon grease for the grease needing bits, and I was eyeing some automatic transmission fluid for the the drive shafts. I think I've got some tubine oil down down in my clock "stuff" box as well.

Anyone got any wisdom they would care to share?

Thanks!

David


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 Post subject: Re: Phono lubrication rules of thumb?
PostPosted: Jul Mon 08, 2019 6:20 pm 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 1927
Location: 77001
Hi David,
You're logic is already right on track re: lube.

1. Turbine oil would be best for motor lubrication.
Recommend motor dis-assembly and soak bearing
housings in solvent x 24 hours to wick out old
hardened oil in felt reservoirs. Dry x 24 hrs.
Then apply saturation of turbine oil to felt.
If not done, then with motor heating up, this old gunk
can move out of the reservoirs and onto rotor and idler.

2. In this Admiral changer, avoid any lube on what they call
the "gear engagement pawl".
From the diagram, I don't see any need for grease on the
trip motion arm or slider. Clean these parts well.

3. Clean and maybe one drop of oil or bit of grease
on the idler wheel shaft. Make sure oil just coats
shaft, wipe off excess.

4. Record support/ over-arm shaft: oil or grease lightly.

5. Hinged parts, clean & drop of oil, remove excess.

My experience with record changers is that they need very
little lubrication, and that a good cleaning will keep
them functioning well.
Also take note of worn out/broken/hardened rubber
grommets and rubber motor mounts for replacement.

Best,
Hotwax


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 Post subject: Re: Phono lubrication rules of thumb?
PostPosted: Jul Mon 08, 2019 7:34 pm 
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Joined: Apr Mon 15, 2019 9:54 pm
Posts: 260
Location: San Francisco, CA
I second the turbine oil use on small rotating record player parts. I use Zoom Spout brand and it does an excellent job.

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 Post subject: Re: Phono lubrication rules of thumb?
PostPosted: Jul Mon 08, 2019 11:23 pm 
Member

Joined: Mar Thu 12, 2009 2:20 am
Posts: 1504
Location: Dayton, OH
Much appreciated. Good to know I'm not entirely off base. I'll hunt for my box of clock stuff, and dig out the oil

I've done one other record player previously, a Voice Of Music player, but for that one I had a detailed service manual from thevoiceofmusic.com that said oil this, lube that, etc, so I thought I might ask here and see what other rules of thumb there were.

Soaking the motor bearings was a good idea, I hadn't thought of it. I've got them soaking in some naptha now, and the naptha's already turning brown after just a couple of hours.

I got lucky, and found most of the rubber bits @ TVOM as well... (Idler wheel, motor mounts, etc)... I should be good on that front.

Hopefully, I'll be able to put it all back together. :-D (Yes, I did take lots of pictures as I went, hopefully it'll be enough.)

thanks again!

David


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 Post subject: Re: Phono lubrication rules of thumb?
PostPosted: Jul Tue 09, 2019 2:01 am 
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Joined: Jan Wed 16, 2013 12:04 am
Posts: 1927
Location: 77001
David,
Sending you a PM, re: RC600 file for you.
Hotwax


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 Post subject: Re: Phono lubrication rules of thumb?
PostPosted: Jul Wed 17, 2019 4:45 pm 
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Joined: Mar Thu 12, 2009 2:20 am
Posts: 1504
Location: Dayton, OH
I thought I'd post one follow up.

The SAMS was appreciated, HotWax. There were a couple of places I missed sufficiently detailed pictures, and referred to the explody-diagram.

Its mostly back together, however, I've not re-installed the tone arm. That will be one of the last things I do. And I still need to verify the few adjustments that are available. (Did use the turbine oil where appropriate, and I don't think I overdid the other lubrication.)

So far, it all *seems* to work, reject works, and my "eye-balling it" of the tone arm mechanism (with out tone arm) looks like its doing the right thing(s) upon rejects and record changes. On/Off won't work, but that's due to a missing part #118 but that's ok, the console its going back in has a convenient record player On/Off switch...

(Its going in a Philco 49-1600, yeah, I know its a franken-radio now, but the wife wanted a player that would play 45's as well, and so when I found this mostly period correct record player, I grabbed it.)

I'll go down to Good Will and pick up a few test records for the first play...

I'll post a picture (or two) once its all done.

Thanks all,

David


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 Post subject: Re: Phono lubrication rules of thumb?
PostPosted: Jul Wed 31, 2019 11:36 pm 
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Joined: Mar Thu 12, 2009 2:20 am
Posts: 1504
Location: Dayton, OH
All that's left is to hook it up to the radio... and see how she does...

Before:
Attachment:
2019-06-10_17-47-03_854-resize.jpg
2019-06-10_17-47-03_854-resize.jpg [ 365.79 KiB | Viewed 696 times ]


After:
Attachment:
2019-07-31_18-19-48_767-resize.jpg
2019-07-31_18-19-48_767-resize.jpg [ 440.59 KiB | Viewed 696 times ]


(I re-flocked the platter myself... I think it looks pretty reasonable if I do say so...)

David


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 Post subject: Re: Phono lubrication rules of thumb?
PostPosted: Aug Thu 01, 2019 1:26 am 
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Joined: May Mon 30, 2011 10:12 pm
Posts: 1507
Location: Glendale, CA
David,
Those before and after pictures are amazing. You did a great job on this record player. If it plays as good as it looks, it's going to sound wonderful.

Tom

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