Vitamix Drive Socket With Wrench

When do you need to change the drive socket?
It depends on how often the machine is used, but this is a wearing part that will need to be replaced sooner or later. Normally after a few years. Something that accelerates the wear of the drive wheels is wiggling the jug during operation, or removing the jug before the machine has come to a complete stop.

If the machine starts to sound in a way that it didn't before, then it's time to check the drive wheel. If it has become worn and needs to be replaced, you will hear a difference in the sound when the machine is running. You can also see what the cogs look like.