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Nose gear leg repair using taper pin

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recapen(at)earthlink.net
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Posted: Mon Jul 01, 2013 12:00 pm Post subject: Nose gear leg repair using taper pin

Folks,



 	  Quote: 	
		  From the archives, I have retrieved a number of postings on replacing the AN5-20A bolt/assembly with a taper pin.

That process involves the pin going in from the bottom - requiring separating the engine mount from the airframe.  
	




Has anyone performed this repair from the top-down?  This looks like it could be done with the engine mount still attached.  I don't recall the engine-mount weldment configuration - that may dictate the direction of the taper pin.



I have a barely perceptible movement in my nose gear leg and I want to get it fixed before it gets worse.  Acknowledging I am at a less than smooth grass field which is a contributing factor - this may only be a temporary fix.



Thanks,

Ralph Capen

RV6A N822AR (at) N06 190hrs

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decaclops(at)gmail.com
Guest

Posted: Mon Jul 01, 2013 7:10 pm Post subject: Nose gear leg repair using taper pin

Howdy Ralph,



Yup, I did it that way. It's a real pain to work behind the engine. I 

drilled the pilot with a Milwaukee angle drill and worked the taper ream 

with an air ratchet. I set the air pressure very low, just high enough 

to keep the ratchet from stalling and used lots of cutting oil. It took 

a long time and was painful to reach, but the nose gear is rock solid 

now. I think I remember beating the firewall up a bit to make room to 

get the taper pin washer, nut, and cotter pin on.



If I had it to do over, I'd probably pull the engine as far as the 

hookups would allow and leave it dangling from the hoist while I worked 

to make better access.



Ed Holyoke



On 7/1/2013 12:59 PM, Ralph E. Capen wrote:

 	  Quote: 	
		   



 Folks,



>From the archives, I have retrieved a number of postings on replacing the AN5-20A bolt/assembly with a taper pin.

 That process involves the pin going in from the bottom - requiring separating the engine mount from the airframe.



 Has anyone performed this repair from the top-down?  This looks like it could be done with the engine mount still attached.  I don't recall the engine-mount weldment configuration - that may dictate the direction of the taper pin.



 I have a barely perceptible movement in my nose gear leg and I want to get it fixed before it gets worse.  Acknowledging I am at a less than smooth grass field which is a contributing factor - this may only be a temporary fix.



 Thanks,

 Ralph Capen

 RV6A N822AR (at) N06 190hrs

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recapen(at)earthlink.net
Guest

Posted: Tue Jul 02, 2013 3:17 am Post subject: Nose gear leg repair using taper pin

Ed, 



Thanks for your response.  I am especially glad to hear that it cured the issue in your case.

I'm still looking to review the plans and look at the mounting tube area again to see if there are differences between the top/forward and bottom/aft sides...that may influence my solution method.  



I am leaning towards your method as it will allow the repair with a minimal amount of dis-assembly - my plan 'B' is the same as your 'had it to do over'.



Ralph

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burnsm(at)suddenlink.net
Guest

Posted: Tue Jul 02, 2013 4:59 am Post subject: Nose gear leg repair using taper pin

Guys,

Another option is to use loctite.

I used loctite 609 with a new bolt and it kept things tight for about two 

years. I discovered loctite 680 which is even better for this aplication 

and used it about six months ago. So the jury is still out but it's an easy 

fix for sure.

Slide the gear leg out. Clean it up and slather it up with loctite and 

reassemble.

I move my 7A around without a tow bar most of the time and that "click" of 

a loose nose gear is very annoying to me!

And yes you can get apart later if you need to for some reason. Just some 

heat from a heat gun will soften it enough for removal.



Mark Burns

7A. 870 hours



 	  Quote: 	
		  From my Galaxy S3


	


On July 2, 2013 6:16:41 AM "Ralph E. Capen" <recapen(at)earthlink.net> wrote:

[quote] 



 Ed,

 Thanks for your response.  I am especially glad to hear that it cured the 

 issue in your case.

 I'm still looking to review the plans and look at the mounting tube area 

 again to see if there are differences between the top/forward and 

 bottom/aft sides...that may influence my solution method.

 I am leaning towards your method as it will allow the repair with a minimal 

 amount of dis-assembly - my plan 'B' is the same as your 'had it to do over'.



 Ralph

 --

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recapen(at)earthlink.net
Guest

Posted: Tue Jul 02, 2013 5:12 am Post subject: Nose gear leg repair using taper pin

Interesting option - I will look in to it!

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