Hi rcfocus,
Thank you for your reply.
I think that you are right. It seems that the ring supporting the spring is missing.
I might be able to replace this component myself.
How do I get hold of such a component?
Best Regards,
Flemming Lassen Nielsen
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rcfocus 0
Suppose UMS5 and UM3 have the same printcore structure. From the UM3 step file, we can see the spring in pirntcore 2. It should not come out to be seen. That means it is damaged and you should return it to distributor for service.
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