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Re: [Tigers] Servo By-pass Unions

To: tigers@autox.team.net, Rollright@aol.com
Subject: Re: [Tigers] Servo By-pass Unions
From: <awtiger@cox.net>
Date: Fri, 15 Feb 2013 14:56:27 -0500
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Delivered-to: mharc@autox.team.net
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Fellow Tiger-ers:

This thread brings up a question that I have had for a long time regarding the 
bypassing of a faulty vacuum brake booster unit.  As for myself, I like things 
to at least look stock under the hood and, as such, would prefer not having to 
install a bypass line and remove the brake booster if the unit went bad.  This 
leads me to my question...would it be possible to, for lack of a better term, 
"gut" the inside of the hydraulic part of the brake booster cylinder and seal 
it to where the brake fluid would stay in the cylinder itself, and simply allow 
the brake fluid to flow through the hydraulic part of the cylinder via the 
brake lines as per normal?  Would doing this reduce the braking force or 
otherwise just flat not work altogether?  Obviously, I've never examined one of 
these cylinders in its torn-down state and, therefore, don't know for sure as 
to whether this would be a viable trick to attempt.  Any thoughts on this???  
Has anyone out there ever tried this??

Thanks,
Andy Walker
Edmond, OK
B382001600LRXFE
TAC #740

---- Rollright@aol.com wrote: 
> Hello,
>  
> Late last fall, I got my 7" servo rebuilt and re-installed. Interesting  
> difference! Manual brakes for 30 years.
>  
> Just a note on making a spare by-pass pipe in case the darned thing packs  
> up again.
>  
> Had one union that Tiger Tom gave me at a United in 1982 (2) in Hudson  
> Valley when it packed up in a mojor cloud of smoke( the first time it  packed 
> up).
> Recently I looked for a while for a second union to make a pipe loop  (to 
> avoid making another pipe bend in case of 'dreaded servo pack-up'.
>  
> Found correct part for about $3.00 at AutoZone 
> AGS Union  # BLU-7C
> 3/16"  (3/8-24) Bubble flare
>  
> Nice to find the right thing locally at the right price.
> Hope this helps.
>  
> Jim  Armstrong
> Mk 1A  
> 382002083
> LRXFE
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> 
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