OK....the emergency brake design on the 70's seems totally inadequate!! While I did change out the shoes/rotors about 2 years ago it never worked right and now the little shoes CONSTANTLY touch the rotor and they make a scrapping sound on the highway. I have looked at the design and the shoes literally "FLOAT" all over the place!!! Is there something I am missing?? Yes I have adjusted to no avail!! It appears the only thing that locates the shoes are 2 lousy spring face clips......which allows the shoes to float a good 1/2 inch in each direction!!! Any insight????

For the first 4 years I owned my '98 V70 AWD, it was warping rear brake rotors about every 10K miles. the dealer kept replacing them under warranty. Finally another shop discovered that the emergency brake cable had rusted into a position that was allowing the emergency brake pads to constantly rub against the rotors, causing them to overheat and warp. (I don't use my emergency brake).

It was a $600 repair for them to replace the cable (the entire exhaust system needs to be removed to gain access), but after they did it, my warping rotor problem went away. Perhaps you are suffering from the same problem.

Good luck.

--Phil

The design is a heritage from the 700-series (or possibly even the the 200-series?) so it is proven! I think the idea is that the floating shoes are centered vertically when pressed against the drum and that the will stay in the same position when retracted.
Anyway, they have a tendency to bind on our V70 now and then. I have removed the shoes, greased the contact surfaces, even lubricated the wires. Everything looks fine..
I have found that if I snatch the handbrake once or twice after the car has started rolling, a "clunk" is heard from each side when the shoes jumps back fully. If I dont I suspect that they may be dragging against the drum but I dont know for sure. I have asked the workshop but they only confirm that the brakes behave like this. So it is more or less routine to snatch the handbrake first on each trip now.
It feels a bit cheap, is there any better solution? The upper return spring looks very thin, would a stronger spring help? Maybe the automatic adjustment stops working then but I could live with that and adjust manually when needed...