Noise From Front Driver's Side

[Jmana]

There is a noise coming from the front driver's side of my 85 300SD that keeps getting worse, but I cannot figure out where it's coming from. The noise is really hard to describe, I would describe it as a "crunching" noise, but it's more like a very dull squeak, like the noise that bad shocks make. It also makes a thump that is felt on the floor and in the brake pedal. The noise is really noticible when going slow and putting on the brakes, but it is also heard occasionally when just going down the road. It will also do it when I turn the steering wheel back and forth. I cannot replicate the noise when it is not moving, I've tried bouncing the front end up and down but no noise. Sometimes it will do it if I push the car from side to side. Putting on the brakes when not moving will not make the noise, but even going a few miles an hour and putting on the brakes the noise is really loud. The only thing I have done to the front is about 2 months ago I put new calipers, pads, rotors, and repacked the bearings. The noise began a few days ago, and now is to the point where I am worried that there is something seriously wrong. I took the wheel off tonight and checked the bearings again, and they look ok (I didn't take them out), and the wheel seems solid and moves smoothly so I don't think it's the bearings going out. Originally I thought maybe a bolt was loose at the caliper, but they are all tight. The steering assembly seems tight also. I am at a loss as to what could be causing this noise. Has anyone else had this happen? Any suggestions on where to look to find where it's coming from?