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Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 54019
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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I have a 2003 S500 Mercedez, The timing chain tensioner is

Customer Question

I have a 2003 S500 Mercedez
JA: Are you fixing your S500 yourself? What have you tried so far?
Customer: The timing chain tensioner is leaking, I am fixing it myself I already removed the old timing chain tensioner and I bought an O Ring, and I was going to reinstall the timing chain tensioner with the new O Ring, so what is the procedure for doing so?
JA: How many miles on the car? How responsive has your car been lately?
Customer: 116K miles
JA: What is the make/model of your car?
Customer: 2003 S500 Mercedez
JA: Anything else you want the mechanic to know before I connect you?
Customer: I am doing the repair myself and I want to know the procedure
Submitted: 11 months ago.
Category: Mercedes
Expert:  Marty replied 11 months ago.

Hi, welcome to Just Answer. My name is*****'ve attached the workshop instructions for replacing the chain tensioner below.

Let me know if you have any questions. Please remember to click on a rating for my service in order for the website to credit me for helping you today.

Customer: replied 11 months ago.
Can we reuse the old timing chain tensioner? If so, what do we have to do to reuse it?
Expert:  Marty replied 11 months ago.

Yes you can reuse it. You just reinstall the tensioner. You do not need to reset this type of tensioner.

Expert:  Marty replied 11 months ago.

I sometimes place it in a vise to compress the plunger but if you simply thread the tensioner into the housing and tighten it slowly it will compress.

Expert:  Marty replied 11 months ago.

Just checking in. Did you get the tensioner installed?