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shertex · #12 09-01-2013, 07:09 PM

Quote:

Originally Posted by centroid1

Does anyone know about the timing chain recall for the 91-93 W124 ? Does it apply to specific W124 or specific year ?

I'm interested in the 93 300D and wonder if any of them have that recall issue.

Yes, the 93 300D was affected. You can tell by VIN. Here's some info from a previous thread:

The "stretched" timing chains of 1993 engines are discussed in Mercedes-Benz Technical Service Bulletin Ref 05/91 dated December 1994. The heading says it applies to engines 602 and 603 in chasses 124 and 140, cars built between July 1992 and July 1993.
The bulletin indicates that affected engines may indicate one or more of the following: unusual noise form chain area, rough running, hard starting, loss of power, increase in oil consumption.

There is a list of specific chassis numbers in the bulletin. I have a copy I downloaded from Alldata. The chassis numbers are somewhat difficult to read but appear to be as follows:
For model 124, engine 602:
from B810470 to B999999
from D000001 to D025898
from J001335 to J01979
from F231885 to F266917
In the above list, the "D" could be a "C," it is very tough to tell.

for Model 140, engine 603
from A092142 to A155557

If in doubt, I would ask your MB dealer to check the bulletin for you.

The bulletin says that the chain should be replaced if the stretch exceeds 3 degrees. In that case, the timing chain sprocket is to be inspected. If the sprocket teeth are broken or worn as shown in the bulletin figures, the camshaft sprocket and injection pump timing sprocket are to be replaced. If the stretch exceeds 10 degrees, the pistons are to be inspected for damage.

The Bulletin does not indicate the warranty aspects of this. That is, it does not say who picks up the tab.

Hope this helps!