Valjoux 72 help

[Oyster]

Got some quick question about Valjoux 72 , 1 parts that I don't know where it belong their 3 identical part like this and both is on the chronograph wheel, this one I don't know 

Thanks for reading !

[RyMoeller]

Those are the frictions springs for the Chronograph Runner (8000) and Hour Recording Runner (8600) and Conveyer Wheel (8610).  The spring for the Chronograph Runners is longer and is located on the Barrel Bridge:

The other two are on the Main Plate (dial side).  Following is an image from a Valjoux 71 I worked on- I think the hour recording mechanism is pretty much the same assembly as the Valjoux 72:

[Oyster]

33 minutes ago, RyMoeller said:

Those are the frictions springs for the Chronograph Runner (8000) and Hour Recording Runner (8600) and Conveyer Wheel (8610).  The spring for the Chronograph Runners is longer and is located on the Barrel Bridge:

The other two are on the Main Plate (dial side).  Following is an image from a Valjoux 71 I worked on- I think the hour recording mechanism is pretty much the same assembly as the Valjoux 72:

thank you RyMoeller ! , will try that.