ETA 255.111 among others walkthrough

[HSL]

Now it is time for me to look at the ETA 255.111, a movement found in a large amount of mid-priced quarts watches from Certina, Tissot, Omega, ETERNA, Longines, Tudor and many others.

Though it goes by many names the original movement can be used as a guide when servicing others in this family.
To save space and not make the thread a mile long I as usual made two PDF files of the Disassembly and Assembly of the movement.

And as usual I urge you to look at the oiling and greasing scheme in the original documents from ETA.

Enjoy!

 

ETA_255_111_Disassemble.pdf

ETA_255_111_Assemble.pdf

[erikvanrossem]

i have a tissot with a eta 255 111. what could be the model of this watch ?!

I am looking for a back cover (which i lost)

[HSL]

There were a couple of them and with different cases, the one in the Picture comes from a Tissot Seastar (9kt gold case) and there were some earlie Tissot 1853 with the same movement.
It should say which one you have on the dial.

Edited September 3, 2019 by HSL

[VWatchie]

Very useful and perfectly illustrated! 

I've never serviced a quartz movement so this will come in very handy one day! Thanks!

[VWatchie]

Just serviced my first quartz watch, so again thank you!