If it was wore out there should be too much space. I usually replace the thrust bearing kit pt#12002213. I lube the cam and bearing. If the cam is not sliding up it won't release the brake. I have sometimes not put all the washers in so I can get the clip on, turn the pulley to release the brake, then put a spacer between the brake and the cover (that keeps the spring compressed just enough to allow the clip to go on easier), reapply the brake, take the clip off, reinstall all the washers, turn the pulley to release the brake and take out my spacer. (If my memory serves me correctly)