[DeTomaso] Brake booster testing question

[Jeff Cobb]

Mark,
Just hook a automotive a/c vacuum pump or two and we use an old a/c gauge set so we can shut off vacuum and watch for leaks, 
since you will need volume, and push the pushrod about at maybe 125 pound of pressure with a 1 1/2 " stoke, depending on the 
length of foot pad to pivot and pivot to rod attachment. 
About 25 ft/pds at pedal pad which maybe 125 pound of pressure for the pushrod depending on the length of foot pad to pivot and pivot to rod attachment. 
The vacuum pump will tell you of an air leak or how well it holds and how the unit performs under vacuum.
I am not sure of the vacuum multiplication ratio.
A leak will be the only issue.

Jeff Cobb
Cell 225-907-4514

Work  225-343-7525
Fax     225-343-7550
zumzum at cox.net
jeffcobb1 at me.com				

On Feb 14, 2016, at 10:58 AM, Mark Charlton <pantera01826 at rogers.com> wrote:

> I am (finally) working on my Mangusta which has not been on the road in 25+ years. Many things are in surprisingly good state and others are completely toasted.
> 
> I would like to know if there is any way to bench test the function of the Bonaldi Brake Vacuum Servo unit (seems very similar to the Pantera unit). Gaining access to it requires removing most of the interior and, since I have it out now, I’d like to know that it works properly before I reassemble everything.
> 
> Short of just replacing it with a new or rebuilt unit, is there any way to know for sure that it will work properly without installing it and connecting everything?
> 
> Thanks!
> 
> Mark Charlton
> pantera01826 at rogers.com
> 
> 
> 
> 
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