[R129 SL] Harmonic damper

[Victor R. Lopez]

Thanks Blake for all the information. I'll be climbing under my SL this week end to check the numbers myself.

Blake Cameron <blake at cameronlaw.com> wrote:v\:* {behavior:url(#default#VML);}o\:* {behavior:url(#default#VML);}w\:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);}
Harmonic balancer failure is a major problem on the late-model M112 320 V6 & M113 430 & 500 V8 motors, although it’s particularly prevalent on the V6.  Mercedes has just issued a recall in April to address the issue.  

 

The problem is that the large rubber ring in the face of the balancer cracks & swells, and eventually comes out of the pulley.  Up to this point the failure is progressive.  All hell breaks loose once the rubber comes out completely.  The balancer may fly apart and when it does, it take out everything within its path, including the radiator, timing chain cover, and oil pan.  Just cruise by the E-class or ML-class forums at MBWorld.org
 About 1 out of every 10 or 20 threads discuss harmonic balancer failure.

 

Here is a link to the TSB:

http://www.edsoto.com/files/fsy8a83l-1

 

Blake Cameron 

 

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From: r129list-bounces at mbcoupes.com [mailto:r129list-bounces at mbcoupes.com] On Behalf Of George Jenner
Sent: Tuesday, June 14, 2005 1:18 PM
To: SL Mailing List
Subject: Re: [R129 SL] Harmonic damper


 

Adam, I suggest you first take the SL into another mechanic who is certified in MB engines for a second opinion.  The first mechanic may be exactly right but you need to verify that before you decide to let someone operate.  Harmonic dampers do not generally become faulty unless the bolt holding it in place has worked loose. (unlikely).


 


Let us know what you find.


 


George Jenner


 


Motor on........


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