Hi,
I inherited this beautfil turntable from my father. He bought it new in the 70's and it has been in their home (in a warm room) until I got it. The turntable stood unused for 20 years.
However, it does suffer from the same problem with the bearings I read about many times on this site. Before I realized that, I bught a new idler wheel and rubber belt as the rubber on the old idler wheel was hard and it gave a rubbing noise when pressed against the step puley.
I disassembled the motor according to the nice walk through that I found on this site. I put the bearings in acetone for 24h in order to dissolve the old gunk. There was plenty of gunk/dirt in the acetone when I was finished.
After that I prepared the oil infusion process by filling a small transparent glass bottle half way with SAE30 oil (Castrol Classic XL 30 - SAE30, https://www.oliebiksen.dk/shop/castrol-classic-xl-2660p.html). I fitted a wine vacuum plug and made a vacuum. Then the air started to free from the bearings - that process went on for several hours. The bottle was kept in the oven by 80 degr. C. Another 24h later I released the vacuum and removed the bearings after a couple of hours.
While infusing the bearings, I also soaked both "felt rings" in oil:
(picture taken before the oiling process)
Everything went fine so far. So I fitted everything backwards and adjusted the step puley so the 33 rpm mode could touch the widest part of the puley (for maximum speed if needed).
I have now tried the turntable over several days and the symtoms are all the same: It starts up too slow at about 30-31 rpm. After 25-30 min. it can go up to 33 1/3 rpm (and higher), which of course tells me that something is still wrong. However, I don't think there is too much friction in the motor, because when I cut the power (idler wheel not touching the puley), it doesn't stop immediately but keeps going a couple of seconds before stopping. Also I can very easily spin it with my fingers.
So, do you have any clue of what I should do now?
I have some suggestions myself (but I would really like your opinion instead of shooting in blind):
* Wrong oil used
* Infusing process gone wrong
* Misalignment of the bearings (how can I tell?)
* Some other parts of the turntable? But everything is moving very smoothly - also the little nylon piece on the speed adjustment arm is still on
I really hope someone can help me here :)
Best regards from Denmark,
Kim