<div dir="ltr">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.</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Sep 1, 2026 at 5:28 PM Bob Haskell <<a href="mailto:rchaskell@earthlink.net">rchaskell@earthlink.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I bought a thin open ended wrench off of ebay and did some filing.  Took <br>
the switch off easily.<br>
<br>
So the next question - what's the thread size?  Looks to be 5/8"-13 - 55 <br>
degrees.  Anyone know for sure?<br>
<br>
Cheers,<br>
<br>
Bob Haskell<br>
Austin-Healey 3000 roadster registrar<br>
<br>
<br>
On 8/27/26 18:44, JSARCH wrote:<br>
> 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.<br>
><br>
> Cheers,<br>
> John<br>
> '62 BT7<br>
><br>
> -----Original Message-----<br>
> From: Healeys <<a href="mailto:healeys-bounces@autox.team.net" target="_blank">healeys-bounces@autox.team.net</a>> On Behalf Of Bob Haskell<br>
> Sent: Thursday, August 27, 2026 5:26 AM<br>
> To: Healey List <<a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a>><br>
> Subject: [Healeys] OD switch wrench<br>
><br>
> Listers,<br>
><br>
> 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.<br>
><br>
> Cheers,<br>
><br>
> Bob Haskell<br>
> Austin-Healey 3000 roadster registrar<br>
><br>
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