hi there
firstly just have a look at the back to see if there are any screws to get in through the back of the case if there are get in that way if not it will prob come out throught the front look for a seal or a joint in the casing
with regard to the alarm goin off at the wrong time set the alarm to go off at 12 move the time keeping hands untiol the alarm goes off if it is not 12 pull the alarm hand off and possition it to the time the clock says try again at 12 and get the postion right if needed regarding the bell side chances are it the hammer or the sping that has come lose so it wont be engaging properly locate the hammer and spring inside the clock and just make sure they are straight and in line with the bells
luke
July 2008