- 25/4/18
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So my fiddling with reps has led to fiddling with some gens too. Just happened that someone asked me if I have ever worked on a 7750. Sure, fake ones. Turns out that was good enough for him, he asked me to take a look at his gen Breitling Avenger II. Couple issues:
First was easy, clean the bezel as it was very stiff and didn’t click through the positions with authority. Simple task - unscrew 8 screws around the edges of the bezel. Use a case knife to pop bezel off. Happy ultrasonic bath. Scrub stubborn grit with alcohol and pegwood. Reassemble.
Second was a mystery - date would not flip over with hand movement (manual or as time went by). Quick set worked fine. I suppose it’s time to open this beast up and get to the root of the problem.
There she is.
Open up the case, remove the crown, release case clamps, remove movement, take off all six hands, remove dial, and - aha - the date driving wheel is missing a leg.
It should look just like the day driving wheel here.
Time to get to work and removing a bunch of things from the top side of the movement.
All these things above.
Replace the driving wheel with a new one.
Reassemble and test the functions. Works great!
Pro tip - get a movement specific holder when working on chronos. No matter what you do it’s impossible to utilize an adjustable movement holder without the chrono mechanisms getting in the way.
First was easy, clean the bezel as it was very stiff and didn’t click through the positions with authority. Simple task - unscrew 8 screws around the edges of the bezel. Use a case knife to pop bezel off. Happy ultrasonic bath. Scrub stubborn grit with alcohol and pegwood. Reassemble.
Second was a mystery - date would not flip over with hand movement (manual or as time went by). Quick set worked fine. I suppose it’s time to open this beast up and get to the root of the problem.
There she is.
Open up the case, remove the crown, release case clamps, remove movement, take off all six hands, remove dial, and - aha - the date driving wheel is missing a leg.
It should look just like the day driving wheel here.
Time to get to work and removing a bunch of things from the top side of the movement.
All these things above.
Replace the driving wheel with a new one.
Reassemble and test the functions. Works great!
Pro tip - get a movement specific holder when working on chronos. No matter what you do it’s impossible to utilize an adjustable movement holder without the chrono mechanisms getting in the way.
