Date registered: Mar 2005
Vehicle: '01-E320 & 02-ST2
Location: John 15:18-19
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
RE: Harmonic Balancer Recall: Key Points
You have the 113 engine in your car, so given the year it is *potentially* included in the campaign. When pic posting is fixed I'll post a couple of pics that might help you locate the number. The first one is a drawing that shows the location of the HB itself, it's #5 in the drawing and bolts to the crankshaft. The grooves in the drawing are where the belt runs, the P/N would be stamped into the top/outer perimeter of the arc of the steel behind the pulley.
The second pic is a true picture, not a drawing, of the number itself. I'm 95% sure the perspective is from under the car with the cladding removed, so the belt is in the front (covering the grooves) and then you can see the number stamped in just behind the belt (runs in the same plane as the belt). Even if yours had already been replaced (see below re: dealer) it would have the P/N in the casting.
If your car is running fine, you can relax a little. When these fail they're proceeded by really weird vibrations whenever the engine is running. If you call your dealer and give them your VIN, they can actually compare it to their list and confirm whether or not your car is affected (as well as advising whether it was already repaired), then you don't have to look for the number.
Lastly, it's important for us all to remember that not every HB with these part nos. is in fact defective. There were two suppliers that made batches for which the number of failures was statistically higher, which is why MBZ started the service campaign. Thus, it's entirely possible that even if you have one of the P/Ns in the affected campaign, it might still be a perfect HB that will live out a normal life.
Take care and enjoy the ride,