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  #16  
Old 06-19-2001, 01:28 PM
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Hi David- as another possibility for your to consider in chasing this squeaking noise down.....

On the E320 Coupe, I had a squeak that was heard faintly in the cabin in circumstances nearly identical to yours. Naturally, I would be able to hear it and no one else would (techs or passengers).

Noise was occurring due to a semi-loose fender and bumper= problem rectified by re-torquing mounting bolts.

Prior to sourcing the culprit(s), there was an extensive search and discovery process that included replacing front windscreen together with multiple occasions SF Factory Authorized Service exhausted inordinate amounts of time reviewing cabin fittings, chair mounts, dash, interior/underneath dash technics, floorboard, engine compartment, suspension, vents, and more misc. "things". It was a real witch hunt where the source of the problem was not immediately proximate to where it manifested itself (since energy can travel through metal and plastic in any/every direction).

I know how irritating this is, so much so, that I was going to give the car away if that rock solid solitude of the cabin would not be restored.

Good luck and hope this helps.
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  #17  
Old 06-19-2001, 02:44 PM
David C Klasse's Avatar
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Location: Mission Hills in the City of San Diego
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Fad,
I'm sorry to hear about that! That's a real bummer.
But I know it's something in the front right wheel, and it's gotten a little worse, and all of my friends can hear it too, it's especially loud on the freeway in the carpool lane with the wall right next to me. I'm taking it over in about an hour. I work next door, so it's convenient.
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #18  
Old 06-19-2001, 05:27 PM
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Join Date: Apr 2000
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David,

Try taking that right front tire off again. Grab the brake rotor (cool of course) and give it a pull. Does it move toward you? Next try to push in with the left hand and pull with the right and vice versa (with the steering wheel locked). Does it move? Now give the rotor a spin and listen (be sure not to catch any fingers between the center hub and caliper, it hurts big time). Do you hear or feel anything? If so, what?

I think it's your wheel bearing either needing to be tightened, replaced or repacked.

Be sure to have the car well supported on jack stands, or on a lift, before trying any of these procedures. Also try not to have any part of your body under the car when pushing/pulling or tugging on parts.

PS: Loose or worn wheel bearings can cause wheel vibrations and mimic symptoms of warped rotors when braking.

[Edited by MikeTangas on 06-19-2001 at 04:37 PM]
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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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  #19  
Old 06-19-2001, 06:10 PM
David C Klasse's Avatar
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Mike,
Thanks for the tip, I'll try that.
As of now though, I took it over to the mechanic, we drove it again, and he STILL didn't hear it. So we went back over and I told him to take of the wheel and inspect. Another mechanic, Tony, really nice guy, jacked up the car, and spun the wheel, we could hear the squeeking/grinding noise. Then, he took the wheel off, visually inspected everything, said nothing looks out of whack. Then we spun the rotor without the wheel and couldn't hear anything. It all sounded normal without the wheel on. Then we put the wheel back on, spun it again, and we still couldn't hear the noise. It had gone away again!

Mike, and those directions about grabbing the rotor will help me determine if in fact it is a problem with the wheel bearings?
Thanks!
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #20  
Old 06-19-2001, 06:23 PM
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Join Date: Oct 1999
Posts: 1,562
....appears that weight on the front end is necessary to observe the condition or cause condition to reappear....you should be able to chase this down since there are only a few possible culprits in the front suspension

and, thanks David for your reply,,,,my E320 Coupe received the necessary attention and is quiet and solid as a rock again,,, so E500 has a stable mate and isn't too lonely in the garage during the week.
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  #21  
Old 06-19-2001, 08:07 PM
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David,

If there is any noticeable movement of the rotor when you grab and yank or work in/out that is a sign of loose/worn bearings. (Not to be confused with the possibility that the steering isn't locked and you are moving both wheels). If the rotor is moving you will feel it, maybe even hear it.

Did the mechanic pop the dust cover off the hub when he "visually" inspected everything? There wasn't any noise when the rotor was spun, but noise when the wheel was mounted and spun, correct?

With the car on a lift, and the suspension relaxed, all of the weight of that wheel was riding on that one bearing.

Hmmmm...
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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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  #22  
Old 06-19-2001, 08:14 PM
David C Klasse's Avatar
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Yes, it didn't make the noise when the wheel was off, but then when we put the wheel back on, it didn't make the noise then either, so kind of frustrating. No he didn't pop off the dust cover... is that is what's in the center? The covering thing the juts out a little? My rear wheel doesn't have one of those, and I thought that was funny...

I'll do the test tomorrow!
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #23  
Old 06-19-2001, 08:33 PM
MikeTangas's Avatar
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Join Date: Apr 2000
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Posts: 4,430
Now I'm getting confused

I went back to look at your pictures, first post pinned it on left front, later it pinned the noise on right front. Which one is it??

Either way, the dust cap is shown in your pictures. Yes, it's the piece that juts out from the center hub.

To access the bearings you have to pop that cap, just pry it off gently. It should be kinda greasy on the inside. The bearing will be retained by any of several methods (generic term for "I don't know how your's are retained"). You can check/repack the outers and retighten the assembly with out having to pull the calipers or rotors. To do a full bearing repack/replacement (inner/outer), you have to pull the calipers and rotors, plus replace the seal.
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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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  #24  
Old 06-19-2001, 08:40 PM
David C Klasse's Avatar
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Mike,
I'm sorry if that was unclear.
It is the drivers side front wheel, hasn't ever changed!

But I noticed that my rear wheel doesn't have that bearing cap, is that important?
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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #25  
Old 06-19-2001, 08:54 PM
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Nothing to worry about on the rear David. The rear bearings support the axle, and for lack of better terms, are internal and non-serviceable like the front wheel bearings.


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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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  #26  
Old 06-19-2001, 08:58 PM
David C Klasse's Avatar
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Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
So the rear should not have those coverings on them? I guess that's good to know, I was beginning to wonder why/how they weren't there! So if something happens, they simply get replaced? Unlike the front where they can be serviced...
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #27  
Old 06-20-2001, 11:25 PM
David C Klasse's Avatar
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Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
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My buddies,
I am going to San Fransisco tomorrow (about a 450 miles each way) in my Mercedes(!!). Well I was curious to knew if this is bad if in fact my ball joint is slightly worn/bad. Does it matter that much?
I have been a bit concerned and wanted to have it fixed by the time I left, but it can't be! So what do you all think?

Well today I took off both front wheels for comparison. I first took off the problematic wheel, and at certain turns of the wheel, while pulling and pushing, there was an EVER SO SLIGHT movement, or play. It was not 100% tight but it was sure close. Well I wanted to compare with the passenger side (a "good" wheel), and there was no play really at all. So does this mean balljoint? What is a ballpark figure for this? And can I go to San Fran and be ok? I can always get it fixed while I'm up there if it gets bad.

I also have vibration again in my steering wheel, is this also an indicator of a bad ball joint?
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #28  
Old 06-21-2001, 02:04 AM
MikeTangas's Avatar
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Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
David, if that rotor had perceptible movement then I'd be getting that bearing retightened, repacked or replaced. Especially if you plan on running 450 miles each way. Once the bearing starts to go it won't be long before you are chasing one wheel down the highway while balancing on the other three.

Loose or worn wheel bearings can cause vibration too.
__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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  #29  
Old 06-21-2001, 02:12 AM
David C Klasse's Avatar
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Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Excuse my language, SHlT!!!!!
What am I going to do? How long does it take to repack a bearing!? I have maybe an hour in the morning while I'm at work... but that's it. I have to drive stuff up to a few offices during that time. I plan on leaving by 12...
How long does it take?
How much does it cost?

THANKS!!!!!
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #30  
Old 06-21-2001, 02:20 AM
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Join Date: Apr 2000
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Posts: 4,430
As long as the bearing is OK, you can repack and tighten the outers in just a few minutes. For the quickie job, one doesn't even have to remove the wheels (if you have wheel covers that is). I haven't a clue as to what it might cost at the shop, that's been a home job for me, well, forever.

If the bearing is too worn, then the rotor has to come off, the races need to be punched out, then new races set in, plus a new seal on the inside. No idea what book time might be, but with parts in hand, maybe an hour a side.
__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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