Breitling Navitimer 806

[Bonefixer]

A friend of a friend has entrusted me with the service/restoration of what was his grandfather's Breitling Navitimer 806. It was just lying around in a drawer, missing its glass and two of the hands, but incredibly it runs and the Chrono seems to function. 
 

I've started dismantling it and have learned that I'm not the worst amateur watch fixer in the world - the dial had been glued down!

 I'm planning to strip down and clean the movement - I should be competent to do that. Clean and re-lume the hands. Source a new glass - acrylic I think - and do very little to the dial apart from maybe a cotton bud and water. 
 

Any advice from the good people here before I crack on? I did tell him the potential value of this and suggest he might get a proper watch maker to sort it. I've offered no guarantees apart from I shouldn't make it worse. 

[Mercurial]

It can be difficult to keep track of all the different screws on a movement like this, you can save yourself a lot of trouble by putting each screw back on the movement after removing the part it secures. 

This ensures every screw stays in the position you found it in, but if the watch was serviced by someone willing to glue the dial on, it’s possible that some of the screws are already misplaced.

You mentioned that the chronograph functions. That being the case, I suggest you keep all the eccentrics that adjust the depthing and engagement of the chronograph works in the position they’re in, unless you have experience with setting up and adjusting a chronograph. 

Take plenty of photos, and you should be fine during reassembly. 

I hope that helps,

Mark

[rehajm]

…watch the YouTubers who have serviced this one, maybe a couple of times.  It helps to be familiar when you dive in. Also can help when you forget where that screw goes…