The only part I see on the diagram is the complete upright ("knuckle") which includes the hub and bearing. P/Ns 447-330-06-20 and 447-330-07-20 (right).Has anyone out there replaced the front wheel bearings on a Metris? Is the bearing replaceable or do I have to replace a whole wheel hub assembly? Any part #or links would help.
Thanks for all the info. I have heard the high pitch sound of a wheel bearing but I have no crunching sounds as you described. I only hear the sound at certain speeds around 65mph. If I turn to the left it goes away...hmm. Still thinking it may be a wind noise..okay I am hoping it will be...I also wanted to note that It was about 2.5 weeks from the time the squealing/grinding started to when I made the repair. I few times during that period I did old bearing check where you grab the tire at 12 and 6 and rock back and forth. Absolutely no play in the bearing. Even now there is no slop in the old bearing but you can hear the crunching in there when you just spin the hub with your hand.
Hello. Thank you for the high-quality information. I'm hoping that you can help me further. I'm on a road trip and I need to perform the same repair. Since I'm not home, I'll have to buy the tools in order to perform the repair. Do you remember the wrenches and socket sizes from when you did the repair?So heres an update:
The part I needed was 447-330-07-20. Gottlieb nailed it a couple posts up. As you can see in the pics, its a bearing, hub and steering assembly. Mercedes calls in a steering knuckle. I was able to source the part online for $648 (this included 2-day shipping). Gottleib also noted that the bearing/hub can be replaced in the old knuckle but this would require a big press. Replacement wasnt too difficult. The ball joints separated fairly easily so no special tools were required there. It took me about 1.5 hrs
If anyone has a similar problem and has the ability to press a new bearing. I can sell you my used knuckle. DM me.
My van has about 60k miles at this point and was disappointed to see a bearing go so soon but s*** happens. I dont recall hitting anything before the problem started but I clearly remember the moment the problem became audible. I was doing about 65 on the highway when a minivan cut me off. I had to slam the brakes pretty hard and the high pitched squealing started.