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Discussion Starter #1
I'm stuck! I just had my 67's booster and master cylinder replaced and when i got home i saw smoke coming from my rear right wheel well, so i had it flat bedded back to the mechanic, he put it up on the hoist and the wheel wouldn't move. He adjusted the rear brake drum adjuster thing and loosed it up to match the other wheel and checked the drum and everything else but couldn't figure out why it had seized(he's a brake specialist??) he said, after adjusting it, that it should be fine but it did it again and now i have no clue. I'm hoping some of the experts on here can help me (and my mechanic)
Thanks in advance
 

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The pushrod between the brake master cylinder and the booster is adjustable. It has to be set to the correct length called out in the shop manual or the brakes don't release all the way. If it's out of adjustment the other way you have very touchy brakes with lots of pedal travel.
 

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Discussion Starter #3
Thanks Royce,
i hope that's it, it seems like such a simple remedy for my mechanic not to catch
 

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did you get new pads? if they are new the width of the pad may be too much, i.e. with the wheel off the drum will turn, but with the lug nuts and tire on there is pressure. just my thoughts.
 

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the residual pressure check valve in the brass distribution block may be jammed to one side. I hear it's a trying task to center it again. good luck
 

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Discussion Starter #6
Thanks for the responses, i guess my mechanic had rebuilt the booster and i think the master cylinder, so he said there wasn't any need to adjust the pushrod because it wasn't touched, or something like that, and it only locked on one side and the pads weren't replaced either. I'll pass on the info on the residual pressure check valve and see if he makes sense of that ( none of this does to me, i rely too much on my mechanic) If anyone has any other ideas please let me know, thanks again
 

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BTW, I know on the 1970 (and perhaps the earlier models) there is a set procedure to adjust the proportioning valve (what Elimin8or70 calls the pressure check valve?). If you don't follow the procedure, you'll find your rear brakes locking prematurely. I'll see if I can find it somewhere. Ask me how I know.

Steve C.
 
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