Mechanical vacuum brake boosters
 

Does anybody have any information on what's available for mechanical vacuum booster brake parts?

Here is a Searle brain valve in the rod to the pedal I saw this weekend at the truck show. It operated a big diaphragm pulling on the brake cross shaft.

My truck has a different one operating a big vacuum cylinder and none of it has any markings.

Re: Mechanical vacuum brake boosters
 

Here is the "brain" valve on my 33 BB.

Re: Mechanical vacuum brake boosters
 

There were a lot of different pneumatic (air) vacuum brake manufacturers who made systems which could be fitted to early Ford trucks with mechanical brakes - Westinghouse-Bemdix, Vel-Vac, and Midland Christensen are just a few examples. I have a setup saved from a scrapped truck but it doesn't have a manufacturers name on it.
I doubt there are many sources of parts remaining for any of these vacuum brake systems so you may have to make your own parts.

Re: Mechanical vacuum brake boosters
 

I'm looking for another set up. If I just knew some part #s or something - I could search on ebay etc.

I cleaned and lubed the one I have since it was sticking in the on position..

I also cleaned out the little horse hair air filter and oiled it up.

Re: Mechanical vacuum brake boosters
 

Re: Mechanical vacuum brake boosters
 

Re: Mechanical vacuum brake boosters
 

Re: Mechanical vacuum brake boosters
 

Look at the 55,56 Thunderbird brake booster, They have been used for a long time. JMO

Re: Mechanical vacuum brake boosters
 

I have a Midland Hy-Power brake booster, 55-57 T-Bird on my '40. It works very good and can be remotely located. There is a company in Austrailia that makes or made a similar design.


https://www.onlineautoparts.com.au/p...oseo=true&c=AU


https://www.fordbarn.com/forum/attac...9&d=1714738078

Re: Mechanical vacuum brake boosters
 

Here's one on Amazon that might work.
dw
https://www.amazon.com/VH44-Remote-B.../dp/B0C5DXBV3V

Re: Mechanical vacuum brake boosters
 

Note that there is a VH40 and VH44 with different diaphragm diameters. Good price on Amazon.

Glenn