The Stovebolt Site Forums The Parking Lot Big Bolts New to Big Bolts, with a new '51 6400 2 Ton

Not too long ago I was eyeballin an old military trailer that had an air/hydraulic combo brake system. There was a QD fitting on an air hose hose by the pintle eye that ran into what looked alot like a hydrovac can, just smaller, with a master cylender on it that pushed the wheel cylenders. That might be what the lever is for, manual trailer brakes, check the back of the truck for a hose connection. Of course tracing the hoses coming off the lever system would work too.