[Healeys] OD switch wrench

[Alan Seigrist]

That's because lucas never used UNF  - it will be a BA (for small stuff) or
Whitworth spanner size.  This size corresponds to an 11/16" Whitworth
Spanner.

On Tue, Sep 1, 2026 at 5:28 PM Bob Haskell <rchaskell at earthlink.net> wrote:

> I bought a thin open ended wrench off of ebay and did some filing.  Took
> the switch off easily.
>
> So the next question - what's the thread size?  Looks to be 5/8"-13 - 55
> degrees.  Anyone know for sure?
>
> Cheers,
>
> Bob Haskell
> Austin-Healey 3000 roadster registrar
>
>
> On 8/27/26 18:44, JSARCH wrote:
> > I I have uses this 1-3/16 wrench but I can't recall for certain because
> it has been many years since I have had to remove the switch. It is about
> 1/4" thick.
> >
> > Cheers,
> > John
> > '62 BT7
> >
> > -----Original Message-----
> > From: Healeys <healeys-bounces at autox.team.net> On Behalf Of Bob Haskell
> > Sent: Thursday, August 27, 2026 5:26 AM
> > To: Healey List <healeys at autox.team.net>
> > Subject: [Healeys] OD switch wrench
> >
> > Listers,
> >
> > Anyone know the wrench used to remove the 3rd/4th gear OD switch from
> the center shift gearbox.  Appears to be 1-5/32" which is not a common
> size.  Thinking of getting a thin 1-1/8" open end wrench and opening it up
> a bit.
> >
> > Cheers,
> >
> > Bob Haskell
> > Austin-Healey 3000 roadster registrar
> >
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