Bill,
When you put your cheater bar on the large bolt on the front pulley, can you get it to wiggle even the slightest bit when you do a push/pull drill. If something really is frozen, but it will wiggle a tiny bit back and forth, it would indicate that it isn't a piston or a bearing but more along the lines of a auxillary drive, gear or pump....something that has backlash associated with it.
If it ran fine last night but is frozen now, there might be something rotten in Denmark! This wouldn't be a typical scenario, as you probably know.
Stuart
