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236 Posts
As the title suggests I would be interested in how other members replace the cloverleaf shaped spring that holds cap jewel in place when the balance spring is still attached to the balance cock.
I have had reasonable success with the method below but I am worried I will bend the balance spring.
Once the cap jewel is sitting in its cup in the balance cock I ensure the spindle of the balance spring is not in its normal position and so is not trying to push out the cap jewel as I try to lock it in place with the spring.
I then insert one of the 3 tabs in its channel and then turn the spring with fine tipped tweezers until the next tab sits over the cut-out to the channel. I then apply downward pressure on the spring with my finger nail while trying to turn the spring with the tweezers. Eventually it locks into the channel. I then turn the spring until the thirds tab is over the cut-out and repeat the procedure. All this time I am applying pressure with my finger on the spring to prevent it flying across the room.
My concern is that when I apply the downward pressure on the spring to get it into the cut-out I am also crushing the balance spring and so could damage it.
is there any way t get around this or any way to may this procedure less fiddly?
Thanks
Chris
I have had reasonable success with the method below but I am worried I will bend the balance spring.
Once the cap jewel is sitting in its cup in the balance cock I ensure the spindle of the balance spring is not in its normal position and so is not trying to push out the cap jewel as I try to lock it in place with the spring.
I then insert one of the 3 tabs in its channel and then turn the spring with fine tipped tweezers until the next tab sits over the cut-out to the channel. I then apply downward pressure on the spring with my finger nail while trying to turn the spring with the tweezers. Eventually it locks into the channel. I then turn the spring until the thirds tab is over the cut-out and repeat the procedure. All this time I am applying pressure with my finger on the spring to prevent it flying across the room.
My concern is that when I apply the downward pressure on the spring to get it into the cut-out I am also crushing the balance spring and so could damage it.
is there any way t get around this or any way to may this procedure less fiddly?
Thanks
Chris