Mercedes-Benz Maintenance: M272 & M273 Timing Chain Tensioner Replacement Guide

In this detailed tutorial, we walk you through the process of changing the M272 and M273 chain tensioner in a Mercedes-Benz. Whether you're a seasoned mechanic or trying this for the first time, our step-by-step guide will help you navigate this process with ease. From rotating the engine to the specific 40-degree mark to the intricate details of using a Torx wrench and torque wrench with precision, we have got you covered. Remember, safety first - always dispose of the old chain tensioner properly. Get ready to give your Mercedes-Benz the care it deserves. Watch now to master the chain tensioner replacement process!

[@arlonsparks1199]

cleanest engine rebuild shop i've ever seen

[@cesarfro620]

When somone helps you. Which way you hold the rear camshaft ratchet? Inn towards the engine or out towards the driver door??

[@tonychavez2083]

Why would one need to replace? When noticeable chain noise is heard under front cover? Or after replacing guides I guess.

[@arabianmarshmallow4415]

over time the spring inside the tensioner gets weaker so when you start the car there is no tension on the guides causing the chains to slap the guides causing a drum like rattle for 2-3 seconds when you start the car.

[@tonychavez2083]

@@arabianmarshmallow4415 thanks, I didn’t think about that spring.

[@fakeddyfakefake9714]

@@arabianmarshmallow4415 Can a bad tensioner cause timing to be out? I have the 1200 and 1208 codes but the engine was not supposed to suffer from idler sprocket wear.

[@arabianmarshmallow4415]

@@fakeddyfakefake9714 depending on what year your car is it can be the balance shaft which is a common issue on these cars

[@shahzadbutt8954]

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