Hi jdchevy. I just discovered today an expert on the brake systems from 1910 to 1960 models. He has the parts and also rebuilds them. I think his company is Midwest Power Prod. He is in Morris, Illinois. His name is Rick (super nice) Phone: 815-942-0550
He is sending me a new Hydrovac for my 57 GMC LCF 2 1/2 ton.
Price was cheaper than rebuilding mine.
Wayne.

Last edited by Old GMC Gold; 03/27/2013 1:53 PM. Reason: spelling
57 GMC LCF 370
55 John Deere 40-W
59 John Deere 430-W
2000 GMC 4x4
56 John Deere 420-W
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