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Mod 72

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wdaniell(at)etb.net.co
Guest

Posted: Thu Aug 09, 2007 7:01 am Post subject: Mod 72

Displaying my ignorance again



The mod calls for etching primer



What is etching primer and what does it do?  



And what is ACF whateveritis that prevents corrosion?  Roger told me that it

is like WD40 so is WD40 a substitute?



Thanks



Will

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jimpuglise(at)comcast.net
Guest

Posted: Thu Aug 09, 2007 8:14 am Post subject: Mod 72

Will-

  

 I had the same question but found both at Aircraft Spruce.  I have in front of me "Tempo Aviation Self Etch Primer" and "ACF-50" Anti Corrosion Formula, both from Spruce.  As I recall, the are less than $10 per spray can.  

  

 Jim Puglise - A-283

  

  uch mu  [quote][b]

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rampil

Joined: 04 May 2007
Posts: 870

Posted: Thu Aug 09, 2007 12:23 pm Post subject: Re: Mod 72

WD40 is not a substitute for the hi-tech ACF anticorrosive

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_________________
Ira N224XS

grahamsingleton(at)btinte
Guest

Posted: Thu Aug 09, 2007 3:18 pm Post subject: Mod 72

WD40 is definitely not a substitute. It degrades over a few months then 

causes abrasion or corrosion or both, (as I understand, it degrades to 

silica in some circumstances, particularly in electrical environments).

ACF50 or LPS1 2 or 3 are like the old Finnegan's Waxoil and leave a 

protective self healing film.

Graham



William Daniell wrote:

 	  Quote: 	
		   

 

 Displaying my ignorance again

 

 The mod calls for etching primer

 

 What is etching primer and what does it do?  

 

 And what is ACF whateveritis that prevents corrosion?  Roger told me that it

 is like WD40 so is WD40 a substitute?

 

 Thanks

 

 Will

 

 

 

 

 


	


-- 

Graham Singleton



Tel: +441629820187

Mob: +447739582005

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wdaniell(at)etb.net.co
Guest

Posted: Thu Aug 09, 2007 3:38 pm Post subject: Mod 72

Ok is there a commonly available substitute for both remembering that

bringing hazmat from the US to Colombia is a little costly?

Thanks

Will

--

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grahamsingleton(at)btinte
Guest

Posted: Thu Aug 09, 2007 3:49 pm Post subject: Mod 72

Waxoil? it's an old motor trade product.

Graham



William Daniell wrote:

 	  Quote: 	
		   

 

 Ok is there a commonly available substitute for both remembering that

 bringing hazmat from the US to Colombia is a little costly?

 Thanks

 Will

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M.Grass(at)comcast.net
Guest

Posted: Thu Aug 09, 2007 7:22 pm Post subject: Mod 72

All,



I wonder if Poly Fiber's Tubeseal can be used as well as a substitute for 

the ACF50. It says on the container



 " containing a very fine preservative oil, mil spec. l-21260, which has a 

characteristic of climbing the tube wall and spreading over the entire 

surface to provide lasting protection. Prevents rust and corrosion inside 

aircraft tubing structures."



Another set of questions:



The instruction of Mod 72 states:

" Thoroughly coat the insert with etch primer, including the bore, and allow 

to dry completely."



I am not sure about :

A- How do you uniformly coat the inside of the inserts (and probably the 

inside of the tubes too) ?

B- Don't you scrape the primer off again when you drive the insets into the 

tubes and therefore make the coating useless?



Wonder how others have done this.



Regards



Michael Grass

A266 Trigear, 914, Woodcomp3000

Detroit



---

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