[W126 Coupe] rear wheel shackle

[Dick Spellman]

Hi Ronny,

Can you post a photo while pointing to the defect?

You could be describing the flex disk that binds the drive shaft to the 
differential..  These are at both ends of the drive shaft and usually 
the front fails first.  I've always replaced both at the same time and 
replaced the center support bearing as well.  It's just normal wear and 
tear.  On a proper lift, drop the exhaust, drop the metal shield and 
then go about removal of the flex disks, drive shaft and center support 
bearing.  Inspect and if needed replace the rear pinion seal if it's 
leaking heavily.  It will weep lightly if the differential vent is 
blocked just from pressure and if this is the case, just leave it 
alone.  Mine as well drain and replace the differential fluid if it's 
not been done.

I've done this more than a few times on 126 and 124 chassis cars over 
the years.  It's pretty common after 100+k miles.

-\Dick


On 10/2/2011 1:52 PM, Ronny 560sec wrote:

> Hi Dick,

> Thank you for your reaction.

> It is located behind the rear shaft and facing the trunk, let we say.

> It is a flat vertical piece with a horizontal piece facing the wheel 

> and another below it facing the middle of the car.

> The mechanic said it is a shackle keeping the wheel in place.

> I discovered that something was wrong when driving first backwards and 

> then forward. this happened with a harsh click sound.

> Can you tell me more about it?

>

> Ronny

> *From:* Dick Spellman <mailto:dick.spellman at gmail.com>

> *Sent:* Sunday, October 02, 2011 10:14 AM

> *To:* Mercedes Coupes Mailing Lists <mailto:mbcoupes at mbcoupes.com>

> *Subject:* Re: [W126 Coupe] rear wheel shackle

> Ronny,

>

> Are you referring to the sway bar that attaches at two points to the 

> rear chassis and then to the plastic links at each rear wheel?

>

> If this has a broken chassis clip, it can be easily repaired.

>

> Or are you referring to the big knuckle at  the front of the rear 

> wheel (semi-trailing arm)?

>

> The only failure I've seen on these is the shock blowing through the 

> arm itself.  There is no repair, only replacement with used parts.  I 

> did both at the same time where it's a complete removal of the rear 

> end.  It's a full day of work and other components should be replaced 

> at the same time and maintenance on numerous pieces completed as well.

>

> If it's just the sway bar, it's not a big job and easy to repair.

>

> Regards,

> Dick

>

> On 10/2/2011 12:23 PM, Ronny 560sec wrote:

>> I had a very strangle experience and wonder if others had the same.

>> The shackle on the rear wheel behind the driver jumps out of the 

>> housing and is also bended.

>> The mechanic will take it apart and will look at it if it possible to 

>> straighten it and put it back in place.

>> What is your opinion?

>> Ronny


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