Timing Chain Replacemnt

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GM - 17 Sep 2008 22:33 GMT

1990 560 SEC

As a rule of thumb, how many hours labour should a shop charge for the
replacement of a timing chain in this car?

And I don't mean the cheater method that basically just feeds the new chain
in with the old, I'm talking full replacement with all the guides, the
tensioner, etc etc.

Any feedback would be much appreciated.

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Tiger - 18 Sep 2008 03:30 GMT

http://www.mbcoupes.com/repairarticles/timingchain/timingchain.htm

I would say 10 hours. There are so many parts to take out!

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JD - 18 Sep 2008 03:50 GMT

> http://www.mbcoupes.com/repairarticles/timingchain/timingchain.htm
>
> I would say 10 hours. There are so many parts to take out!

I've seen it done much faster by breaking the master link and wiring the
old chain to the new one and snaking it through. Probably not the elegant
factory recommended method but it seems to have a lot of credence among the
MB cognoscenti in this neck of the woods.

JD

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trader4@optonline.net - 18 Sep 2008 14:10 GMT

> >http://www.mbcoupes.com/repairarticles/timingchain/timingchain.htm
>
[quoted text clipped - 6 lines]
>
> JD

Actually, according to the MB service manual for my 116 300SD, cutting
the old chain, connecting new one to it, then feeding it around is the
correct replacement method. Also included is removal/inspection/
replacement of the tensioner, guide rails, etc. I think what GM may
have meant was that the job should include more than just changing the
chain, which I agree. MB manual says that if an overhaul is being
done, then an original type timing chain which is not split should be
used.

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Tiger - 18 Sep 2008 14:33 GMT

Yes, the two hours job. That is what I would do if it was me. Mbcoupes.com
has excellent hints on how to do this with one person... usually it takes
two... but his way eliminates error.

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