Haller Anniversary Mantle Clock quartz 85?

My father has Haller Mantle clock quartz 85 W085/00675 which has stopped working. I opened up the back plastic cover and all of the plastic cogs and internal gubbins fell out! I'm desperate to put the clock back together but haven't got a clue where all the cogs go, are there exploded views of the internal workings of this type of clock available? Or can somebody help me please, thanks Mark