Didn't see the black bolt you refer to, the axle has a spring behind the flange that brake drum bolts to, the spring pushes the bearing to a collar that has a small retainer in a groove in the axle. You can push the collar and the bearing toward the flange and see the small retainer, you'd need three hands to get it off. The oil seal rides on the collar. The axle tube has a flange and four bolts that hold the brake baking plate and more bolts at the other end that hold it to the differential, it's all one piece, so I guess it's a terrell. My local cart guy didn't know so he ordered parts for both terrell and fuji 'cause he wants to stock everything. When the parts come in tomorrow I'll see what fits and pass the info on. Thanks to HotRodCarts and Gonzo!