Bill,Brett & All,
For what it's worth, Not only do the early models
use the scroll seal,but J-type O.D.'s use them also.I Don't know if all of
them use it,but I found out when I had to replace my first motion shaft in
the O.D. that came from a '79.
Bob Harris
----- Original Message -----
From: Bill Kelly <bk54@erols.com>
To: Brett Soren <mr_creosote@hotmail.com>
Cc: <spitfires@autox.team.net>
Sent: Saturday, March 25, 2000 10:54 AM
Subject: Re: trans front oil seal
>
> Brett,
>
> I know the early gearboxes used a "scroll seal" at the front. The hole
> in the bell housing is threaded, and the clearance is very small. Any
> gear oil that splashes up there adheres to the input shaft because of
> the tight clearance and its own viscosity, and is essentially screwed
> back into the box by the turning shaft.
>
> This does not work if the level of the oil reaches the scroll, but this
> could only happen if the gearbox were severely tilted forward.
>
> Don't know whether or when they switched to a rubber seal. If there are
> no fresh major oil tracks in the bell housing running down from this
> opening, I'd advise leaving it alone.
>
> Bill Kelly
> '62 Herald
>
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