did a search and didn't find to much. i took my hydrovac ('50 6400)off thinking it wasn't working but discovered problem was with master cylinder and length of rod. 2 questions - 1. is there a way to test this unit off the truck 2. does anybody have a source for parts? the number off the unit is "5 66 PC379494"
Last edited by mem; 11/17/2009 4:41 PM.
