Troubleshooting an IBM 5155 - (portable personal computer)

[Innfogra at aol.com]

I, too, am interested in the question of how to lube and maintain the  
floppies. I need to go through a several 5 1/4 in full height floppy  drives myself. 
And the first has IBM on the front also.
 
Thanks for the help,
Paxton
Astoria, OR