Found double row timing chain - Mercedes-Benz Forum
 
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post #1 of 7 (permalink) Old 04-10-2011, 04:10 PM Thread Starter
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Found double row timing chain

Well I just ordered all the parts to do replacement of the vacuum and timing chain. I was basically going to refresh the entire top of this engine.
Long story short, I opened the valve covers and viola! There is a double row timing chain.

Well now my question is, with 135K miles on the engine should I still change the chain? The rails are looking a bit root beer color but look to be in good shape, should I change these? How many miles do the double row chains need service?
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post #2 of 7 (permalink) Old 04-10-2011, 09:14 PM
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If the rails are root beer, it's most likely time. They darken with age and they don't get much darker than that. Most people consider the change interval 100k miles. Do you know if/when the chain/rails/tensioner were last done?

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post #3 of 7 (permalink) Old 04-10-2011, 09:24 PM Thread Starter
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Is 100k miles the same time to replace a double row timing chain also
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post #4 of 7 (permalink) Old 04-10-2011, 09:29 PM
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Yes.

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post #5 of 7 (permalink) Old 04-10-2011, 09:52 PM
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60k miles... That don't look root-beer colour to me


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post #6 of 7 (permalink) Old 04-10-2011, 10:19 PM Thread Starter
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I don't know when my timing chain was last done but the car has 135k on it so if 100k is the time for a change then I am going to do it. However there isn't any measurable stretch on it.
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post #7 of 7 (permalink) Old 04-10-2011, 11:10 PM
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The guides, not the chain. Looking pretty root beer to me. They can also turn "Hershey Chocolate: brown.

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