How your Hydrovac works
Posted: Thu Feb 02, 2012 9:25 pm
I found this short film that may help you understand what happens when you press the brake pedal . Enjoy http://www.youtube.com/watch?v=keChCevuKk8
This is a discussion forum on the GMC World War 2 era 2.5 ton truck...the CCKW.
https://cckw.org/forum/