FWIW, these guys suggest filtered gasoline to clean precision spindle bearings before grease packing:

http://www.gmnbt.com/spindlebearings_installation.htm

Don't burn yourself up!

Of course, since you have the Kluber uber-grease, you may want the Kluber uber-cleaning-procedure:

http://www.klueber.com/PDF_Dokumente...EANING_ENG.pdf

Brake Cleaner is on that list:

http://www.berrymanproducts.com/Portals/0/1420.pdf

Cheers,

BW