They are called Swivel Pins. Download the Rave manual, http://green-oval.com/joomla/index.php?option=com_docman&task=cat_view&gid=13&Itemid=29 and read up on it.
It's unlikely, but the loose hub could be the swivel pin preload being too light, if he grabbed the tire at 12 & 6. But if that's what it is, they definitely need rebuilding and not just adjusting, though just adjusting usually doesn't last too long, replacing at least the bearings is a better route to go.
If it were my car I would just tighten the hub nuts correctly and drive it to see if the swivel pins are loose, typically evidenced by the steering wheel jerking back and forth when you hit a bump, until you apply the brakes and/or slow down. If they seem good they you can probably just replace your hub bearings and seals.
I have it. Thanks!!