bigmessowires,

I recently re lubricated the 400k floppy drive of my Macintosh 128k. The instructions provided are for newer, half height SuperDrives and 800k drives.

The servicing involved removing four screws from the underside of the drive. This enables you to release the disk carriage assembly from base of the drive.

Now you need to free the disk carriage assembly from the eject motor. This can be a fiddly task!

Once fully removed, you can gently wash the drive assembly of its old grease and apply some new white lithium grease.

Finally reassemble the drive and make sure it injects and ejects disks properly.

I hope this helps!