A/C differential clutch assembly needs replacement due to ball bearing wear. Unfortunately there is difficulty in removing the old one. Turning the bolt turns the front plate and does not loosen the bolt. Tried to hold the plate still as I turned the ratchet but its still too difficult. Please help. What is the correct way to remove and install? Is there any particular method I should try? Edit: By the way, I already tried the method where you turn on the A/C which may turn on the magnet, locking the clutch plate in place and can then turn the bolt using tension from the attached belt. In my case, turning on A/C does nothing. It doesn't even blow air. I'm still stuck.