Clean the shaft and internal bronze bushings with alcohol. Apply 2-3 drops of light turbine oil to the shaft and reinstall. The Idler Wheel
A small rubber belt connects the motor pulley to a stepped intermediate flywheel/pulley assembly. This isolates motor vibrations from the platter.
A classic symptom of an E50 motor that needs a full teardown. As the old oil heats up, its viscosity changes drastically, causing the motor to drag. Conclusion thorens td124 service manual
Remove the long case screws holding the motor caps together. Gently tap the casing with a plastic mallet to separate the sections.
Clean the linkage levers underneath the chassis. Old grease turns hard and locks up the speed selector switch. Clean the shaft and internal bronze bushings with alcohol
Release the delicate retaining clip (or rubber washer) on top of the idler wheel spindle.
When you download a manual, check that it includes mechanical assembly drawings and not just the user instruction booklet. The genuine service manual has exploded views of the stepped pulley, idler wheel assembly, motor mount details and the speed‑change mechanism. This isolates motor vibrations from the platter
Remove the three screws holding the bottom cap. Be prepared for old oil to drain out. Pull the main spindle shaft straight out from the top.