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Author Topic: Stud removal  (Read 1408 times)

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Migv6 le Frog Fan

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Stud removal
« on: 30 October 2022, 12:59:09 »
No not how to drag Opti off his sil.  :D
Ive bit the bullet and bought a new camshaft for Pierre. Not OEM obviously.
The new one has a threaded hole where a stud screws into, which the cambelt pulley then attaches to with a nut.
The old cam has said stud screwed into it.
It doesnt just wind out though.
The only way I know how to remove it would be to use two nuts tightened against one another and then wind it out against the inside one.
Its a very fine thread though and I dont have a suitable nut among all my spares, and cant even find one among the hundreds of nuts in the workshop at work,
Any ideas on how to remove it without wrecking the thread please ?
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Doctor Gollum

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Re: Stud removal
« Reply #1 on: 30 October 2022, 13:06:10 »
You presume that the stud is removable  :-\
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ronnyd

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Re: Stud removal
« Reply #2 on: 30 October 2022, 13:09:43 »
Have you tried heating it up?
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Migv6 le Frog Fan

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Re: Stud removal
« Reply #3 on: 30 October 2022, 13:12:07 »
Well, as the new cam has a threaded hole for it to screw into, then I thought it would be safe to assume.  :-\
I think the old one has some kind of threadlock stuff around it.

Not yet, as I still need some means of winding it out that wont wreck the thread.

I have just found a place in colchester that does all kinds of fixings so I may pay them a visit and see if I can get a piece of high tensile threaded bar to use as a stud for the new cam.
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ronnyd

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Re: Stud removal
« Reply #4 on: 30 October 2022, 13:19:31 »
Do you have, or can you get, a thread pitch gauge to find out the thread per inch. Or more likely being of Frog manufacture it'll be mm. About a tenner on Egay.
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Nick W

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Re: Stud removal
« Reply #5 on: 30 October 2022, 13:26:32 »
It's French, so weird threads are highly likely. Knowing what it actually is would help, so a thread gauge and caliper would fix that.


Have you considered that the stud is Loctited? Having been caught a few times, I would now heat the thing before going any further.


Welding a nut you do have to the end of the stud should then enable you to undo it :y
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Migv6 le Frog Fan

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Re: Stud removal
« Reply #6 on: 30 October 2022, 15:49:00 »
Cigars for Ronny and Nick. Just gave it a bit of heat with a blowtorch, quickly wrapped a cloth around it, then put it in a vice and it wound out without wrecking the threads.
Thanks.  :y :)
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ronnyd

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Re: Stud removal
« Reply #7 on: 30 October 2022, 16:11:31 »
Quote from: Migv6 le Frog Fan on 30 October 2022, 15:49:00
Cigars for Ronny and Nick. Just gave it a bit of heat with a blowtorch, quickly wrapped a cloth around it, then put it in a vice and it wound out without wrecking the threads.
Thanks.  :y :)
Nice one.  :y
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Doctor Gollum

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Re: Stud removal
« Reply #8 on: 30 October 2022, 17:26:39 »
Bish bash bosh ;)
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