Beogram 4002 DC Motor Restoration

A Beogram 4002 DC platter motor in need of restoration arrived recently from Australia. This shows the motor as I received it:

I took it apart to get the bearings out for oil infusion:

The bearings are the two small donuts on the black pad. I immersed them in motor oil and pulled a vacuum. Immediately strong bubbling started:

The bubbling indicates that air is being drawn from the pores of the Oilite bearing material to make room for diffusing oil. After about 72 hours the bubbling stopped and I extracted the bearings from the oil:

Then it was time to reassemble the motor for a RPM stability test in one of my Beogram 4002s:

I ran a ~24 hrs measurement with my BeoloverRPM device. This is the curve that I measured:

This is pretty much as good as it gets with the DC motor of a Beogram 4002. This motor is ready for duty again!