Hi Dennis,
My thread chaser has two ends the 14mm spark plug end and the 18mm end for
the O2 threads. Sorry I didn't elaborate fully, glad Dennis H caught my
info deficit.
Rick

On Fri, Oct 2, 2015 at 2:43 PM, Dennis Jowell <dennisjowell@gmail.com>
wrote:

> Rich
> Is the thread on the O2 sensor the same as a spark plug? Looking through
> my tools I did find a spark plug thread chaser. I can't remember if I used
> it for the sensor or not.
> I think I did because I never did anything with any spark plug threads on
> my Westy. Can you confirm that the threads are the same?
>
> Dennis
>
>
> Dennis Jowell
> Scotch Hollow Farm
> Newbury, Vermont
>
>
> On Oct 2, 2015, at 10:16 AM, Richard Koller <brvkoller@gmail.com> wrote:
>
> Dennis,
> I forgot to mention that I had to restore the threads in the O2 bung with
> a thread chaser ( if my memory holds, I used a spark plug thread chaser )
> after removing the sensor. I've done this a couple times and it has worked
> out each time and I was able to reuse the O2 sensor with no problem.
> Rick
>
> On Fri, Oct 2, 2015 at 9:43 AM, Richard Koller <brvkoller@gmail.com>
> wrote:
>
>> Dennis,
>> I had this same problem and I heated the cat at the junction where the O2
>> sensor screws in with MAPP gas. Then quickly slipped my 22mm box end over
>> the disconnected sensor wires and was able to break it free. It would be
>> better as others have said to use the dedicated O2 sensor socket. Heat was
>> essential however in my case.
>> Good luck.
>> Rick Koller
>>
>> On Thu, Oct 1, 2015 at 12:37 PM, Dennis Jowell <dennisjowell@gmail.com>
>> wrote:
>>
>>> I just started to replace my O2 sensor on my 2.2 wbx. No,luck using my
>>> wrenches . Everything is rusted together. The catalytic converter is only
>>> about a year old. Is there a better way to remove the sensor? Should I use
>>> my touch to heat the sensor ? Any ideas would be great. I might get to
>>> Quebec yet just have to get this done.
>>>
>>> Regards,
>>> Dennis
>>>
>>> Dennis Jowell
>>> Scotch Hollow Farm
>>> Newbury, Vermont
>>>
>>
>>
>