The rub-in jewels in question are those with a cap jewel held by friction or some kind of claws to secure it, no easy way to take the cap jewel out. I know the easiest way to lubricate it is just use a automatic oiller. Is there any method to oil it if I dont get an automatic oiller? Thank you!
Hey I hope I can help you. I live in China and there's a considerable amount of spare parts of 7001 taking out from the original movement including the whole barrel assembly and mainspring. Where do you live? I see if the selling can ship to you or not? As for the prize I guess one barrel assembly will be ¥100 that's around $14.
Just took a look and PUW movements in general has a crown wheel with a small bearing. And by the looks of your ratchet screw I would say it is missing the small bearing and is upside down.
I just pop a picture on a common PUW ratchet wheel here so you can see what it might look like.