I've lost the tool to change the pad, and I can't find any wrench thin enough to check the size needed. What wrench size fits so I can grind down just one wrench?
I would take a look at mine and let you know if i could but i 've lost my PC wrench too.
I used a pair of long nose visegrips to take my backing plate off yesterday with no problem. But it looks like a 9/16 open end wrench would do the trick for you. How thick are your wrenches ? I'm able to just stick the wrnech in there ? Why would you have to grind one down ?