Broken Lyre Spring on Incabloc, Help

[easthammer]

I have broken a lyre spring on an RL1235.21 and have found the below on the incabloc website. What part number would be for the main plate lyre spring 770.03 or 775.03 as im not sure what is classed as above or below? 

Part two - I do not have a jeweling tool but do have a staking set. I believe I will need to push out the setting. My idea was to use a staking set to push it out slightly to put in the spring and then set it back in again? 

Would anyone have any better ideas on how to go about this?

first time I have ever broken one. Pretty gutted I did it but it is what it is. 

 

[Nucejoe]

Removing adjustor arm might give you enough access to replace the spring, 

[JohnR725]

Pictures are always nice  just so we can confirm what's going on..

On 1/27/2021 at 6:55 AM, easthammer said:

770.03 or 775.03 as im not sure what is classed as above or below

Usually below is the main plate above is the  backside of the watch. Usually on the backside of the watch the parts are physically bigger because they look pretty.  So the bigger physical size spring will be visible  the smaller will be on the Dial side