Oliver:Try to find a blow-up drawing of the tach drive gear box and how it
connects, or take a close look at someone else's right on the car. It'll
become obvious. The back of the dynamo drives the little shaft. The knurled
knob holds the shaft into the dynamo. As I remember it, the u-shaped brass
thing keeps the gearbox unit from rotating out of position and shorting out
your distributor. After you compare yours to a working one, you may decide
to just buy a new tach drive gearbox. The little shaft gets chewed up. This
can happen if the gears inside the box get stiff or jammed. You may be able
to fab something, but...you'll probably have to buy one. Friendly Mr. Ed
can help you with that.
John Deikis
On Sun, Aug 16, 2009 at 10:44 PM, Lawrence Karpman <lkarpman@tx.rr.com>wrote:
> The set screw holds the reduction gearbox in position, and keeps it from
> rotating. Often times if it rotates it will contact one of the clips that
> hold the distributor cover on and ruin your whole day.
>
> ----- Original Message ----- From: "oliver" <sumton@sbcglobal.net>
> To: "MG" <mg-t@autox.team.net>
> Sent: Sunday, August 16, 2009 8:44 PM
> Subject: [Mg-t] tach connection
>
>
> and while i'm at it - what does that set screw collar in the top picture
>> hold
>> in? it doesn't seem like it really does anything.
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