Hi,Jeff! Fellow "Bolter",Bob Burgoyne,has a hydrovac rebuild "link" in his "Gallery" page! His truck is a 1964 Chevy C-60. The name of the manufacturer is: Reman Incorporated. He says that the rebuild was actually fun to do,and quite simple. Nice step-by-step instructions/pics/exploded views. Good idea to replace those "HVAC" flex lines,as well. Hope this helps.
