After going through the threads here about SMC problems and rear brake lockup, one thing I notice is the lack of movement of the SMC when someone has had a problem related to this. Yesterday, my rear brke locked solid as I entered a parking lot so my assumption was the SMC had failed (again) I replaced the SMC assembly in 2011 with a brand new complete unit and have had no problems until now. My question is this: If the brake system and SMC are working properly, should I be able to move the SMC fore and aft on it's pivots easily? My feeling is there should be hydraulic pressure on the SMC so I should not be able to move it back and forth easily. One thing I noticed was when I started looking at the bike the SMC rocked back and forth quite easily with no resistance. By the time the tow truck got there my bike would roll quite easily, almost like the pressure had bled off and the brake released itself. I rode down the parking lot and applied only the front brake and I had exactly the same problem, rear brake locked solid. I'm hoping someone here with a bike that is working properly can tell me how much resistance the SMC has when it is pushed forward. I have not taken anything apart as yet, one thing I did read here was a possible brake pad popping out of the caliper on the end opposite the pin. Thanks in advance for your help and advice.
Mike
Mike