[Vintage-Audio] Dual 1226 turntable lubrication

[JM/CO]

The 1226 was one of the later of the famous Dual changers that were the
dominant changer technology of the '60s and 70s. Many of these machines can
be returned to first class operation with a good clean and lube, PROVIDING
that all the parts are there, and in good condition. The very first thing to
look at is the idler wheel. These have not been available for  years, but if
yours is in good shape, and not hardened up, than it is possible to restore
the unit to original operation. The critical things to pay attention to are:
1) The motor bearings (dismantle / clean / reassemble and lube with 3 in 1
oil ),
2) The platter shaft and bearing ( remove main cam to remove this--clean in
acetone, and lube with 10-30 or similar ),
3) The main cam ( clean, lube with ANY good grease, re-install )
4) The motor drive pulley, and inner platter rim. Clean with acetone.
5) That idler wheel--clean with acetone. Lube the bearing with 3 in 1 oil.
These can be rebuilt. Last time I checked this was around $50
You will need metric tools.
Anything on top of this will require the attention of someone familiar with
these units. They are very tricky to adjust, if they go out of whack. More
precise than any Garrard / BSR etc, but much more difficult to get working
properly also.
Dual changers are still somewhat in demand today, mainly by folks who want a
good table on which to play 78s. Some models bring rather high prices on
e-Bay.
I have rebuilt hundreds these units ( have been doing this since I bought my
first 1019 in the 1960s ). If you are interested, contact me directly.
Chuck N1LNH
----- Original Message -----
From: "Joe Filice" <jpf@photon.com>
To: <vintage-audio@mailman.qth.net>
Sent: Friday, March 07, 2003 6:55 PM
Subject: [Vintage-Audio] Dual 1226 turntable lubrication


> Hello,
>
> I was given a pristine looking Dual 1226 turntable.
> It's been sitting idle for many years.  I plan to
> use it in a mono system I have (Heath WA-P2 & W-5M)
> for playing 50s era mono LPs.  It's going to replace
> a Pioneer PL-12D -- I think this will be an upgrade.
> I figure it needs lubrication.  I obtained a copy
> of the service manual for the thing.  It specifies
> six different lubricants at various points:
>
> Renotac No. 342 adhesive oil
> BP Super Vicostatic 10 W/30
> Shell Alvania No. 2
> Isoflex PDP 40
> Silicone oil AK 500 000
> Molykote
>
> I'm not inclined to try and track down these lubricants,
> if they still exist 30 years later.  I thought I could
> use, where appropriate, a high quality machine oil and
> lubriplate.  Can someone recommend a machine oil?  Are
> any of those six lubricants above a grease?  Can I use
> a lithium grease like lubriplate as a substitute?
> All opinions are welcome.  Thanks.
>
> Joe Filice KQ6GL
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