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I had major brake problems with my 73' coach. My flexible lines in front were mostly stopped up. I had one that would kinda work and one that wouldn't. Both rear cylinders leaked. All of the steel lines were rusty to the point that they would leak if you so much as bumped them. I ended up replacing all of the components from front to back except the boosters. I had the local hot rod shop kid order my flex lines specially made, as they are not available. I made special clamps to hold them to the frame. All of the cylinders, seals, pads, shoes, hardware, etc had to be matched up at the parts house. The parts are available, but the #'s don't 100% work.
You will find that rotors and drums are non-existent for 1 ton GM chassis' up through 73. I'm pretty sure 69-73 were transition years to disc brakes. Luckily my rotors cleaned up at the min. One drum was too far out to even consider. I modified my rear backing plates with spacers to use later model C2500 drums which were fairly cheap from O'Reilly's. The machine work on the drums was pretty extensive. I also replaced the parking brake cables which were rusted off at the backing plates. All of the work was done at my shop. Parts were around $500. Couldn't have afforded to hired the work done.
Quote: rotors and drums are non-existent for 1 ton GM chassis
Didn't see any 1 ton drums there.
Flathead, I looked also. All the parts I see are for "TOY" or "SHOW" trucks. Nothing Barth owners could use on the heavier truck chassis.
I am not sure if Smiley actually looked. All of the brake parts on Bob's site are for "TOY" or "SHOW" trucks. None would qualify for the heavier Chevy Barth Chassis.
The brake system described by the poster is Hydro Vac, not Hydro Boost. Hydro Vac has a firewall mounted master cylinder with rigid lines running to two frame mounted vacuum boosters, one for the front brakes, one for the rear.
I replaced my boosters about 15 years ago only because they were 30 years old but a search lately turned up nothing in the way of replacement units.
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