how can I fix a cuckoo clock that was damaged by removal company?

Could anyone send me a picture/diagram of how the workings of a 3 weight black forest cuckoo clock should look? I'm sure that as the removal company wrecked it by chucking it into a box, there isn't too much wrong-the oddd bent wire out of place etc! At the momnet it ticks and chimes etc but not at the right time and only when I pull the weight down-any ideas? Thanks