I'm fairly new here, but ive already found out that you guys have some excellent solutions, so i hope you can help me! Ive got a 1970 buick skylark, 350, four-wheel drums, and its almost completely stock. My brakes went out about 4 months ago, so i went to BrakeMasters to see if they could fix it, they said 'Sure!' Man, do i regret that. Ive been back to them at least 8 times, and im no closer to fixing the problem.
My problem is this: when im at slow speeds, there is this throbbing of the car, like the shoes are rubbing on the drums. Also, sometimes when i break a little hard, there is this really, really, loud screeching sound, like a train is coming to a halt. Ive brought the car back numerous times, and they keep saying that it needs to be "adjusted." So they 'adjust' it, and it works fine for about a mile and a half! I just cant seem to get anywhere with these guys.
The drums are all either new, or have been resurfaced, so i know they are not out of round, but i also heard that the problem could be that the shoes are not arced to the drum, but i guess its no longer common practice to arc the shoes to the drum?
Anybody have any clues as to what the problem could be?