You need to call these guys. They made my 1960 C60 booster work like new. And it had sat for 27 years in a thicket. They are in San Jose Ca. Martin rebuilt mine in a day.
Power Brake Exchange, 2870 Alello Drive, San Jose Ca. 408-292-1305. The real old ones like this one are pricey to build. I paid around $300. But that truck now stops on a dime. Shops from all over the US will accept your unit for rebuild, charge you a fee and send them out to these guys. I'm lucky. They are about 15 miles from my home.
