This is the most misunderstood procedure. The manual explains that the speed is set by a combination of the magnet’s vertical position and its rotational angle relative to the stepped pulley. Do not attempt this without referencing the manual’s magnetic field diagram. You will need a strobe light or a phone app (RPM Calculator or iRPM).
The idler wheel transfers power from the stepped pulley to the main platter. It must be perfectly round, pliable, and properly aligned. Common Issue Corrective Action Glazed, hard, or flat spots thorens td124 service manual
Remove the bottom plate of the bearing housing. Wipe out all old oil. Inspect the thrust pad at the bottom; if it is deeply pitted, flip it over or replace it. This is the most misunderstood procedure
If you want to dive deeper into restoring your turntable, tell me: Which version do you have ( or Series II )? You will need a strobe light or a
Some owners choose to replace the original rubber grommets with after‑market spring suspensions that lower noise transmission. The service manual gives the original motor mounting geometry, so you can verify that any after‑market upgrade keeps the motor pulley aligned with the stepped pulley.
Essential for removing the retaining clips on the idler wheel and pulley shafts.