Originally Posted by
riverdrifter
I'm not sure if this has the original front hub. Serial number dates the bike May 1984, a 21 inch model 620. The catalog says the hubs should be Atom Lux-Compe Helicomatic QR. That's what is on the back, but the front is a Normandy Luxe Competition.
A normandy hub is an atom hub. Those are original equipment.
Grease does not get better with age. It's a pain but the bike really needs a complete tear down before doing any extensive riding. It's your call and your bike but that's what I would do.