[W124] W124list Digest, Vol 25, Issue 3

[Gibbons, Paul]

Richard,

Remember the engine will be cranked-over hard at high(ish) speeds,
delivering the power required to get there....

This means the engine mounts will be under a lot of strain and
metal-to-,metal contact could take place.......not just in the engine mounts
but the exhaust is at the ectreme of it's movement too, so could be
contacting something....


-----Original Message-----
From: w124list-bounces at mbcoupes.com
[mailto:w124list-bounces at mbcoupes.com]On Behalf Of Richard Granville
Sent: Monday, June 04, 2007 3:57 PM
To: w124list at mbcoupes.com
Subject: Re: [W124] W124list Digest, Vol 25, Issue 3


steve,  i am amazed that already you seem to have information that no 
mercedes garage seemed to have here in Bordeaux.... they simply say that 
they knopw of no-one set up to balance the drive shaft.  The drive shaft has

been off and on buth i am convinced now from the words  "thrumming at 100 to

150 kmh that this is exactly the problem.    How long does the procedure 
described in the  AF41 etc   sheet take ?  Are tjhey going to  "sting" me 
for the repair as I have already spent a lot on this car...... although i do

have a vehicle which will potentially outlast me !

I agree on balancing being delicate but do not feel that this is the 
cause.... too many different rebalances by different companies has not cured

the  "thrumming"  (i am so, so pleased with this word... it describes 
exactly the problem !

regards and thanks    Richard
----- Original Message ----- 
From: <w124list-request at mbcoupes.com>
To: <w124list at mbcoupes.com>
Sent: Monday, June 04, 2007 2:55 PM
Subject: W124list Digest, Vol 25, Issue 3



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> Today's Topics:

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>   1. Re: Vibrations (Steve Nervig)

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> ----------------------------------------------------------------------

>

> Message: 1

> Date: Mon, 4 Jun 2007 05:54:58 -0700

> From: Steve Nervig <dakota at mac.com>

> Subject: Re: [W124] Vibrations

> To: W124 CE Coupes and Convertibles <w124list at mbcoupes.com>, Richard

> Granville <richard.granville at wanadoo.fr>

> Message-ID: <B96A38DE-FCCD-48BF-B093-2843885EC318 at mac.com>

> Content-Type: text/plain; charset="utf-8"; Format="flowed";

> DelSp="yes"

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>

> On Jun 4, 2007, at 4:27 AM, Richard Granville wrote:

>

>> 1990 300-24ce  automatic 5 speed.   Vibrations at 100 Kmh + ....

>> much of front suspension checked and replaced, rear drive shafts

>> new, new rear differential, replaced rubber bushes in drive shaft,

>> and of course changed alloys and tyres with many balance checks !

>> The steering feels  "metallic" when the vibration comes in and

>> although the steering wheel transmits the metallic vibration feel,

>> I am not convinced that the body transmits as well.  Never been in

>> crash or shunt, Mercedes and Mannesfrance perplexed..... beautiful

>> condition but this vibration spoils long trips on motorways....

>> any wizzkids out there with ideas ?   Regards to all readers

>> Richard English in France !

>

> Richard, I'm not sure from your description, as to whether you feel

> it is in the front end or the rear drive shaft.

>

> Were the wheels/tires balanced on the vehicle? Some cars really

> require this to get it 'perfect'. A lot of shops do not know how to

> balance wheels/tires properly, so I suggest finding a specialty shop

> that REALLY knows what they are doing, if you haven't previously done

> so.

>

> Failing that, it may be your drive shaft, and it may need to be

> balanced. Here are a couple of jobs that show how to do this. There

> is also job 41-080 in the Service Manual if you need it.

>

> Regards,

> Steve

> 1992 300CE Sportline

>

>

> ??

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