http://www.autozone.com/repairguide...AMS/VACUUM-DIAGRAMS/_/P-0900c1528007dbe6 Best I could find! searched for 2 hours! A lot of wiring diagrams,Not much on Vacuum!! Same thing with my T.F. '55 Chevy 2-ton! I bought a Truck Shop Manual,and there was nothing in it for the hydrovac or the 2-speed vacuum plumbing! The "brake" side of the hydrovac was covered,but Not the vacuum routing! The only "problem" I had was when I attached my 2-speed lines.I had them switched. Button "Up" is "Hi","Down" is "Lo". I switched the lines at the diaphragm,and it worked as it should.


Just sold: 1955 2nd Series 6500 2-Ton Flatbed Truck
Mo' Tater
In the Stovebolt Gallery
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It takes an awful big dog to weigh a ton.