Upon receiving the clock the first thing I do is visually inspect the clock for any obvious damage, check to see if the clock is wound up, this will tell me if the mainspring is broken, if it is not wound up I will wind it up a few clicks this will allow me to manually rock the abchor back and forth to check escape wheel drop.

The next job is to strip the clock (after letting down the mainspring ) when it is stripped down I again visually inspect all parts paying particular attention to wheel teeth, pinions, pivots and bushes.

Any damaged parts identified during inspection are then repaired, Including the making up of a new torsion spring, cleaned again ready for reassembling

After second inspection all parts are degreased cleaned and polished using Renaissance wax, the base is either just cleaned or polished as per customers specification .

The movement is then rebuilt ( note I wear latex gloves for reassembly to keep off finger prints )I then install the torsion spring and pendulum put the clock in beat ready for testing . 

The clock is then either refitted to base or installed into case and run for a couple of weeks to make sure all is as it should be.