Servicing a Tag Carrera Calibre 7750 (pic heavy)

[Irishcain]

So I was sent a Tag to service, and I must say, it was actually quite an enjoyable job. The original problem was a non-functioning chrono, but a few other details were found along the way.

First, there was removal of the movement.

Next, I removed the hands and dial

Now I begin disassembly of the movement, checking for current and future faults, beginning with the Date and Chrono Works

Balance Assembly

Moving onto the motion works

I also disassembled the mainspring, but didn't take any pics. Sometimes you just get into the zone.

And now the Keyless

Into the cleaning machine

Ahhh, clean parts

After taking out each part and inspecting it, I also pegged out the jewels on each of the plates, bridges, and c*cks.

When the cleaning was done, it was time to test the case

Passed Perfectly!

Reassembled and testing for accuracy

And a Lume shot for the topping (I didn't mess with it, but it just didn't feel right leaving it off of here, lol)

In the end, there were a few things wrong with the watch. Too much oil, misaligned operating lever, broken incabloc spring, missing incabloc cap jewel, broken cannon driver pinion and a bent yolk spring being the worst of the faults. All in all, it was a nice piece to work on, but it does remind you why a7750's aren't exactly the most trustworthy movements.

[jonbummer78]

enjoy this post. thanks! I guess any 7750 rep has to be serviced very well before use