POWERBRAKEBOB
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"MAXI" BRAKE WAS A BRAND NAME OF ONE OF THE FIRST SPRING BRAKE UNITS. IN THE EARLY 60'S, THEY WERE ALL "RETRO-FIT" MAXI IS NOW OWNED BY MIDLAND, WHICH IS OWNED BY HALDEX. MAXI'S WERE A PISTON STYLE SPRING BRAKE WITH A DIAPHRAGM SERVICE CHAMBER.. MOST SPRING BRAKE WENT TO DOUBLE DIA CHAMBERS FOR EASE OF REBUILDING. NOW, MOST OF THOSE ARE SEALED UNITS, BECAUSE OF THE DANGER OF THOSE NOT KNOWING HOW OR IF TO CAGE THE SPRING. TO RETRO FIT TO AN OLDER TRUCK, WE HAVE ALL THE VALVES AND UNITS TO DO IT.
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THE CONVERSION TO MAXI BRAKES ALSO REQUIRES A "THIRD" OR PROTECTED TANK JUST TO OPERATE THE SPRING BRAKES, IN CASE OF AN AIR LOSS. WE COULD HELP YOU WITH THE PLUMBING OF THE SYSTEM
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WE MAY BE ABLE TO HELP YOU. I DO REBUILD THOSE UNITS, BUT OUR FAVORITE IS TO CONVERT THE AIR/HYD TO A NEWER SYSTEM.
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HI THERE! I'M NEW HERE. I WANTED TO MENTION MY COMPANY, POWER BRAKE SERVICE, HAS BEEN AROUND SINCE 1950, AND WE STILL HAVE THE PARTS AND THE KNOWLEDGE TO REBUILD ALL OF THE OLD HYDROVACS. WE ALSO SPECIALIZE IN RETROFITTING NWER BRAKE SYSTEMS, SUCH AS THE HYDROMAX, WHICH GIVES YOU A DUAL MASTER CYL. THEY HAVE EITHER 1.75" BORES, OR 2" MASTERS. IF YOU NEED YOUR HYDROVAC REBUILT, OR CHECK VALVES AND FITTINGS, WE PROBABLY HAVE THEM. OUR WEB IS "POWERBRAKESONLINE.COM"
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