Hi, i have a '87 300TD that just developed a clunking when hitting a bump or turning. I jacked up each wheel and tested for play. The left rear moved around quite a bit. you can visibly see the axle move behind the hub when you shake the rotor around. Nothing else in the suspension moves. I'm pretty sure I need a wheel bearing, but I haven't, and still don't notice any whining while driving, which seems strange to me. This is a wheel bearing, right? Thanks in a advance.