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Ways to remove stipped AN-365

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bacstabber(at)cox.net
Guest

Posted: Sun Apr 02, 2006 6:26 am Post subject: Ways to remove stipped AN-365

I have two stripped AN-365 nuts on my tie down because I over torqued them with my new torque wrench.  Now I have the two nuts that I can't loosen or tighten.  On the CDI wrench, I expected a loud "Click" sound but only got a bending of the handle at the head.  First question...is this normal for click torque wrenches in general or is this just how the CDI works?



My noviced belief is that these nuts need to be replaced but do they really?  They seem to be secure and don't want to come off anyway.  If they do need to be replaced, I need some advise on how to remove these nuts.



Thank you for your help...



Jack

wgill10(at)comcast.net
Guest

Posted: Sun Apr 02, 2006 6:43 am Post subject: Ways to remove stipped AN-365

Hello Jack,



Replace the stripped hardware. If able, use a small cut-off wheel in a

dremel or die grinder. 



Bill



--

khorton01(at)rogers.com
Guest

Posted: Sun Apr 02, 2006 7:46 am Post subject: Ways to remove stipped AN-365

On 2 Apr 2006, at 10:25, Jack Clark wrote:



 	  Quote: 	
		   



 I have two stripped AN-365 nuts on my tie down because I over  

 torqued them with my new torque wrench.  Now I have the two nuts  

 that I can't loosen or tighten.  On the CDI wrench, I expected a  

 loud "Click" sound but only got a bending of the handle at the  

 head.  First question...is this normal for click torque wrenches in  

 general or is this just how the CDI works?



 My noviced belief is that these nuts need to be replaced but do  

 they really?  They seem to be secure and don't want to come off  

 anyway.  If they do need to be replaced, I need some advise on how  

 to remove these nuts.


	


Jack,



The bolts were also over torqued, and there is no way to know how  

strong they are now.  If the tie down fails during a wind storm, your  

aircraft could be significantly damaged.  Replace the bolts and nuts.



I have no experience on removing stripped nuts, so I can't offer any  

good ideas there.



Kevin Horton         RV-8 (finishing kit)

Ottawa, Canada

http://www.kilohotel.com/rv8

rlundin46(at)yahoo.com
Guest

Posted: Sun Apr 02, 2006 8:48 am Post subject: Ways to remove stipped AN-365

I don't know how much room you have to work with, but

you could try a nut cracker. Very inexpensive tool

that screws a wedge against the nut and brakes it on

one side.

Good luck,

Rick



--- Jack Clark <bacstabber(at)cox.net> wrote:



 	  Quote: 	
		   

 <bacstabber(at)cox.net>

 

 I have two stripped AN-365 nuts on my tie down

 because I over torqued them with my new torque

 wrench.  Now I have the two nuts that I can't loosen

 or tighten.  On the CDI wrench, I expected a loud

 "Click" sound but only got a bending of the handle

 at the head.  First question...is this normal for

 click torque wrenches in general or is this just how

 the CDI works?

 

 My noviced belief is that these nuts need to be

 replaced but do they really?  They seem to be secure

 and don't want to come off anyway.  If they do need

 to be replaced, I need some advise on how to remove

 these nuts.

 

 Thank you for your help...

 

 Jack

 

 

 



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seipel(at)seznam.cz
Guest

Posted: Sun Apr 02, 2006 8:49 am Post subject: Ways to remove stipped AN-365

I'd replace the nuts and bolts.  Your torque wrench did exactly what 

mine does, and I expect that's normal.  The click over of the head is 

very subtle and you have to be paying attention or you'll miss it.



PJ



Jack Clark wrote:

 	  Quote: 	
		   



 I have two stripped AN-365 nuts on my tie down because I over torqued them with my new torque wrench.  Now I have the two nuts that I can't loosen or tighten.  On the CDI wrench, I expected a loud "Click" sound but only got a bending of the handle at the head.  First question...is this normal for click torque wrenches in general or is this just how the CDI works?



 My noviced belief is that these nuts need to be replaced but do they really?  They seem to be secure and don't want to come off anyway.  If they do need to be replaced, I need some advise on how to remove these nuts.



 Thank you for your help...



 Jack

webmaster(at)flion.com
Guest

Posted: Sun Apr 02, 2006 11:08 am Post subject: Ways to remove stipped AN-365

Seconding what Kevin said (since I didn't get the original post - that seems

to happen a lot; probably getting stripped by my ISP's spam filter), you

have actually stretched the bolt and weakened it, so it needs replacing as

well as the nut.  As such, you don't have to be gentle with the bolt.  A

nut-splitter will work, or careful work with a cutoff wheel (don't go

through the washer under the nut and into the structure).  You may find that

the nut will still 'grab' the non-stripped threads behind it, allowing you

to simply un-bolt it, so I'd try that first if you already haven't.  And,

yes, that is normal for click wrenches; I find that feel is a better

indicator than sound.  No one told me how they worked and I was expecting

them to ratchet freely past torque; I just about twisted the bolt apart. 



Patrick Kelley - RV-6a - cabin details ongoing...



--

rice737(at)msn.com
Guest

Posted: Sun Apr 02, 2006 1:28 pm Post subject: Ways to remove stipped AN-365

Use vice grips to get the nut off if there is room and replace nuts and 

bolts.



Paul

RV8 Finish kit,

Buying avionics at Sun and Fun

---

ceengland(at)bellsouth.ne
Guest

Posted: Sun Apr 02, 2006 3:50 pm Post subject: Ways to remove stipped AN-365

Jack Clark wrote:



 	  Quote: 	
		  



I have two stripped AN-365 nuts on my tie down because I over torqued them with my new torque wrench.  Now I have the two nuts that I can't loosen or tighten.  On the CDI wrench, I expected a loud "Click" sound but only got a bending of the handle at the head.  First question...is this normal for click torque wrenches in general or is this just how the CDI works?



My noviced belief is that these nuts need to be replaced but do they really?  They seem to be secure and don't want to come off anyway.  If they do need to be replaced, I need some advise on how to remove these nuts.



Thank you for your help...



Jack




	


Can you get a large pair of 'dykes' (diagonal cutters) to the 

intersection between the nut & washer? If so, you should be able to 

squeeze & apply force outward on the nut while turning the nut. Use your 

3rd hand to hold the head of the bolt.  Goal is to get the nut to 

bite on good threads & start unscrewing.



If that fails you might try cutting the bolt even with the nut & then 

drill the bolt like drilling out a rivet, but with a slightly larger bit 

instead of smaller. The washer will buy you a small safety margin to 

keep the bit away from the structure.



Torque wrench issues: If you've never used a torque wrench before, you 

will be shocked at the small amount of force needed to torque nuts under 

3/8" dia. I'll bet the wrench clicked before you even thought you had 

snugged the nut.

bacstabber(at)cox.net
Guest

Posted: Mon Apr 03, 2006 7:30 am Post subject: Ways to remove stipped AN-365

Thanks to everyone that has helped me with their reply.  I decided to use the Dremel to cut the nut.  I left a small amount of nut in place to help avoid damaging the spar during cutting.  The remaining nut was easily separated from the bolt.



Now in my next adventure in plane building, I will learn about replacement hardware purchasing...

HCRV6(at)comcast.net
Guest

Posted: Mon Apr 03, 2006 5:20 pm Post subject: Ways to remove stipped AN-365

Jack:



It would also be a good idea to check the calibration on your torque wrench.  The first one I bought when I was starting my RV-6 turned out to be over 100% in error in the 20 to 25 inch pound range for AN-3's (25 in lbs setting was actually 60 in lbs).  Suffice to say that that one went back to seller accompanied by a very nasty letter.  BTW, the seller was NOT Avery or Cleveland.



--

Harry Crosby

RV-6 N16CX, 195 hours



 -------------- Original message ----------------------

From: "Jack Clark" <bacstabber(at)cox.net>

 	  Quote: 	
		   

 

 Thanks to everyone that has helped me with their reply.  I decided to use the 

 Dremel to cut the nut.  I left a small amount of nut in place to help avoid 

 damaging the spar during cutting.  The remaining nut was easily separated from 

 the bolt.

 

 Now in my next adventure in plane building, I will learn about replacement 

 hardware purchasing...

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