By popular request (really, I got quite a few emails about this!...;-), I finally completed my Beogram DC motor restoration video! It demon...
Friday, February 19, 2016
Beogram 4002 (5513): Restoring the DC Motor
After I rebuilt the arm lowering and tracking mechanisms of the Beogram 4002 (5513) that I am restoring right now, it was time to get into the electronic parts. I decided to first look into the motor. This Beogram showed a perfect RPM stability, so there was no immediate need for rebuilding the motor, but I think a full restoration should include the motor to ensure longterm stability of the restoration and full day-to-day usability of the unit. So here we go:
This shows the motor extracted from the enclosure:
Then I took the motor out from the noise shield:
and took it apart.
Then it was time to lubricate the sleeve bearings, clean the commutator and the brushes and put it back together. After installation I did another 24 hrs test, and the result was essentially the same as before. So it is all good in the motor department! On to exchanging the electrolytic capacitors and updating the RPM trimmers and relay!