The Beogram 4002 I've had for three weeks has had some speed issues since I tried to kill it. On the occasional LP, especially 180 gram recent reissues, I had clearly audible wow, for perhaps half a revolution of the disc. On one of the three 45s I own, the entire song seemed off pitch (too low). I had a few hours alone this morning (the Fabric Selector and Offspring were out buying me a listening chair!) so I thought I'd take the BG4002 out of the system and try a 10 minute, 10 dollar fix.
After taking the cartridge off, I took the two main aluminum plates off, removed the top platter, removed the belt, and finally removed the subplatter. I used a twisted, lint free cloth to clean out the bearing cylinder as best I could. I then wiped down the bottom spindle. I put two drops of "Z Black Bearing Oil" from LP Gear in the bearing cylinder, one drop on the bottom spindle, and reassembled everything.
Since then I've listened to a 45 a few times, a couple (former) problem LPs, plus the 10" Black Market Clash, and I've heard no wow/speed issues. I've got a strobe disc coming this week for testing, and I'm ordering belts from Martin to be sure, but it seems cleaning and lubricating the platter was the key here.
I should've known better. When I bought the deck from Jeff, he disassembled the whole of the platter and I should've cleaned and lubricated it when I reassembled it.
Can't wait until I finally get the new Soundsmith cartridge!