how to replace front wheel bearing on 1988 orion?

Your front wheel bearing comes as one part and if you try to remove it it falls apart and will need a new bearing fitted using a press.The old bearing has to be pressed out and the inner race will have to be removed of the hub flange by using a angle grinder or air chisel (make sure you where eye protection)
The bearing is pressed into hub and then hub flange (the part the wheel is bolted to) is pressed into the bearing.
Why not take hub assembly to your local garage should only cost about £15.00 to fit
Hope this is helpfull

Gervase
January 2005