1986 Toyota Pickup rotors

Hey there,

I've got a 4 wheel drive 1986 toyota pick up. I'm trying to replace the rotors. I have the rotor/hub assembly off. I've removed all the bolts holding the rotor to the hub unit, but still can't separate the two.
Do I need to disassemble the hub?
Are there two parts to the hub?: an inside bearing housing and an exterior that "sandwich" the rotor?

Thanks so much.