Posted by Todd Somers [162.158.78.25] on Monday, January 16, 2017 at 20:11:30 :
In Reply to: this looks exactly(??) like the hydravac on posted by clueless [108.162.210.121] on Monday, January 16, 2017 at 12:37:57 :
The "second cylinder" might be the check valve to the vacuum line.
Follow Ups: