Hamilton 600 Stuck Caseback

[Chrono15]

Hello all,

 

I have a Hamilton 600 with a stuck caseback. Any advice on how to loosen it without damaging the lugs, or caseback itself? 

It desperately needs a service, and an ultrasonic bath as you can see.

 

Thank you!

[watchweasol]

Hi The cheap way is to superglue a large nut to the back and use a spanner, Then fill the nut with acetone which will release the glue.  Job done. used it a few times and it works.

[Chrono15]

Just now, watchweasol said:

Hi The cheap way is to superglue a large nut to the back and use a spanner, Then fill the nut with acetone which will release the glue.  Job done. used it a few times and it works.

I may give that a shot, It doesn't damage in any way?

[oldhippy]

That is a screw back case, so you need a good case back opener. 

[Chrono15]

Just now, oldhippy said:

That is a screw back case, so you need a good case back opener. 

Correct, I have a few presses etc I have tried. It is stuck on tight.

[watchweasol]

No damage at all just clean the back with the acetone.

[vinn3]

3 hours ago, Chrono15 said:

Hello all,

 

I have a Hamilton 600 with a stuck caseback. Any advice on how to loosen it without damaging the lugs, or caseback itself? 

It desperately needs a service, and an ultrasonic bath as you can see.

 

Thank you!

    notice the flats.  a large cresent wrench can turn this.   you need a "fixture" to hold the case securley.  i use the wooden block.  this case has fine threads and might be "cross threaded".  be careful,  good luck.  vin

[rodabod]

I’ve always wanted one of those diver-style Hamiltons. Message me if you ever decide to sell it!

[Chrono15]

Update: I was able to get it off with the nut and glue trick. I also heated it slightly with a blowdryer. The gasket had basically turned to glue in the back. In the midst of service as we speak! 

[Chrono15]

Project Complete! Thanks everyone! Now to possibly find a new crystal.. this one has crazing,