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  #1  
Old 09-24-1999, 07:31 PM
mikeb
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When is a good idea to replace a timing chain. My MB is 1985 380SE with 100,000 miles? Some say that this model has double chain, others say that replacing is not that expensive and may save money on a long run.
  #2  
Old 09-24-1999, 10:37 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
The cost is usually about 900-1200 US Dollars. Do it if it hasn't been done.

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Benzmac:
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
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  #3  
Old 09-25-1999, 08:14 AM
mikeb
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Is this a cost of replacement a chain? Or, is it a cost of failing to replace the chain and potential damage? Is it difficult to replace a chain? I have done it before but not on MB and I am not sure if I could do it myself.
  #4  
Old 09-25-1999, 06:45 PM
metricman
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Before deciding whether or not to do the timing chain yourself, you may want to R&R the left side valve cover and inspect the rails. It is very common for the inner rail on this side to break when the chain starts to 'slap'. The rail pins can be stubborn to remove... and many techs remove the rocker arms before rolling in the new chain. It is not a hard job, but you have to be careful! No shame in backing away from this type of engine maintenance, a mistake usually means bent valves....

Good Luck either way.

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  #5  
Old 09-26-1999, 09:08 PM
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Join Date: Aug 1999
Location: Cincinnati, Ohio
Posts: 1,935

Your car does have a dual-row chain, but MB recommends replacement at 100K mile intervals. If the chain snaps, you will have major headaches! I would strongly recommend that you have the chain replaced. Good precaution. Besides, if you ever decide to sell the car, the potential owner will see that all the proper services were carried out at the recommended times.

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Rgds,
Aaron Greenberg
MB technician
'67 250SE Cabriolet
'77 450SL
'79 6.9
'79 6.9
'80 300SD
'81 240D
'85 380SE
'89 420SEL
'93 300E 2.8
  #6  
Old 09-27-1999, 07:06 PM
mikeb
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Thank you very much for the responses. I am convinced to do it and I will have chain changed.
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