Does the hubcap have what looks like molded in lug nuts? If so, look carefully at the nuts. Some may have stamped ring indentions that will indicate that they will turn and releasing the cap. If not, the hubcap probably will just pry off to expose the wheel lug nuts. Careful, they probably bend easily. Using a wide bladed screw drive or
hub cap puller might help. This is a toy hauler TT, right? Bob
EDit: Never mind, I see you've got it.