Omega Dynamic Chronograph Caliber 1138 Service

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Tick Tock Doctor's detailed photo essay on servicing an Omega Dynamic Chronograph, caliber 1138, offers an invaluable behind-the-scenes look at the intricate world of watchmaking. His step-by-step visuals demystify the complex process of disassembling and preparing a chronograph movement for service. This post is an essential resource for enthusiasts seeking to understand the craftsmanship and precision involved in maintaining a mechanical timepiece.

Omega cal. 1138 Chronograph

Always make sure your screwdrivers are shaped well.

Removing stem and crown.

You can see the chronograph module.

Have your technical information ready if available.

Removing hands.

Wraping the dial for protection,

Last look before disassembly.

Chronograph module

The two screws and holding brackets for chronograph module

The module just seperates from the time movement with the screws.

Time to clean.

Mainspring barrel and arbor.

Closing the barrel lid.

Now for the chronograph disassembly and cleaning.

Have to finish some other things first. Let me know if this is intresting to you.

This message has been edited by tick tock doctor on 2012-07-26 21:39:30 This message has been edited by tick tock doctor on 2012-07-26 21:46:31 This message has been edited by tick tock doctor on 2012-07-26 21:51:41

Key Points from the Discussion

These detailed service posts serve as a public service announcement, educating those who underestimate the complexity, organization, precision, and specialized tools required for mechanical watch servicing.
The Omega Dynamic Chronograph, with its caliber 1138 (similar to the Speedmaster Reduced), is often considered challenging due to its stacked chronograph module, but experienced watchmakers find it manageable.
The photo essay provided valuable insights into the internal workings of a chronograph module and the process of removing a crown stem, which is useful knowledge for enthusiasts.
While disassembly is interesting, the real challenge lies in reassembling the intricate components of the watch.

The Discussion

aroma

Jul 27, 2012

but it's the putting it back together that I'd have problems with!! A very interesting piece and yes, keep it coming. Cheers Andrew

G99

Jul 27, 2012

Ive never seen a chrono module before so ive learnt something. Also knowing how thw crown stem comes out is handy. Keep it coming G

nilomis

Jul 27, 2012

I love to see the internals. More, please. Congratulations, Nilo

mrsnak

Jul 28, 2012

...I really appreciated seeing an in depth photo essay into the bowels of this beast. Many watchmakers are afraid to work this movement because of the stacked configuration (same movement as the Speedmaster reduced), but those that are comfortable find them like working on any other watch. Mine has been bulletproof and still keeping COSC specs after 4 years of ownership, and mine was bought used - an early model (yellow lume) I will bookmark this thread for future reference.

flightmaster71

Jul 29, 2012

Serve as public service anouncements to all those poeple who don't appreciate what is envolved in servicing a mechanical watch. You know the "I have to spend how much every five years to get it serviced??..." types. Not just due to the fact that your posts display the complexity that we as Purists know is involved in these watches but because they demonstrate the organisation, attention to detail, precision and specialist tools required by a watchmaker such as your self. Your photography reflect

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Omega Dynamic Chronograph Caliber 1138 Service

Key Points from the Discussion

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