[T3] stumped
Keith Park
topnotch at nycap.rr.com
Sat Nov 30 08:29:26 PST 2013
How do you get the needle back on the shaft in the right spot for accuracy
Since the shaft isn't indexed?
Keith
Top Notch Restorations
topnotch at nycap.rr.com
http://www.a383ina68.addr.com/radiorest/main.htm
71 Squareback "Hothe"
65 Notchback "El Baja Rojo"
65 Squareback "Eggcrate"
87 golf "Winterat"
93 RX7 "Redstur"
-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Jim Adney
Sent: Saturday, November 30, 2013 9:16 AM
To: type3 at vwtype3.org
Subject: Re: [T3] stumped
On 28 Nov 2013 at 16:44, witwicki wrote:
> I have always used a fork in the past to pull the needles off.
> slide it all the way in to the end of the tines and pull up.
> I have never had a shaft break, but the needles can be pretty brittle if
they have been sun baked.
> It's hard to be gentle and pull hard enough for them to come off
Thanks for the suggestion.
This struck me as a great idea, but I found that there wasn't enough
room behind the hub to slip my fork tines thru. I could get them in a
bit, but not enough to grab the ends of the tines and pull evenly.
In the end, I removed the needle, which was already broken, and then
twisted the hub while holding the shaft with a sturdy pair of pliers.
Once I had commited to the possibility that this might break
something, I was able to exert enough force for the hub to come off
the shaft without damage. It appears to be a light press fit, and I'm
sure I could do this again with a needle in place.
Once the hub was off the shaft, I could remove the center cover and
then the dial. This let me get at the little hairspring in there,
which had been bumped by some previous intruder. It was deformed such
that adjacent turns of the spring touched and made the shaft stick,
so the speedo would never register smoothly. This turned out to be
easy to correct once the dial was out of the way. At this point it
was also easy to remove the shaft and clean the bearings, so I expect
everything to work nicely once it all goes back together.
This was an early red needle speedo, but the tail end of the needle
had been broken off and previously lost. People don't realize that
the needles have to be balanced, in order to not effect the speedo
reading, so I'm going to have to add a bit of something to the tail
end to restore its balance. That's probably going to be a little drop
of epoxy. I'll add enough to overbalance the tail end and then file
off the excess until it's balanced.
--
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************
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