DIY Tensioner/Pulley Kit replacement on 2008-12 Mercedes Benz C300

DIY Tensioner/Pulley Kit replacement on 2008-12 Mercedes Benz C300

[@jackzap]

Car was squeaking and your video helped me change the belt. Thanks!

[@briansamara9587]

Great video! DIY went well and you saved me a pile of cash! Thanks!

[@marcusscott6199]

Great video very detailed thanks 😊

[@mastercdiychannel8063]

Thank you.

[@thongsoukmingsing1715]

Thanks for making this video

[@MrNini1826]

You are the best 👌 you explain very good...I check ✔ another video 📹 they just waist your time .. but you know very well ..thank you

[@mastercdiychannel8063]

Thank you

[@thomasmend4321]

Thanks for the help. Really

[@CarlosGarcia-kr5ph]

Very useful thanks

[@daveycrockett9447]

You should compress the tensioner and place the set pin in place BEFORE loosening any screw on the belt tensioner pulley- otherwise you won’t have access to the other bolt.

[@daveycrockett9447]

Never mind - you addressed this. Great job on the video.

[@mujotagani1049]

Counter-clockwise brotha

[@Daniel-pj9nm]

Is there a specific tightness I should screw the bolts when I replace the pulleys or is it just as tight as possible?

[@daveycrockett9447]

You have to be very careful NOT to overtighten. The block is aluminum- so it’s easy to strip the threads if you are not careful. I used blue lock tight and 18 ft/lbs

[@josecarreras7749]

So my pulley broke from the back lip and ripped my belt to shreeds is there a certain limit to how tight the pulley gotta be

[@rjkulman8990]

torque is about 20 nm ( always good to know torque values, and apply them accordingly)

[@makennajames773]

What would cause the belt to slip off after replacing the top pulley?

[@mastercdiychannel8063]

Makenna, it could be many factors such as loose bolts, bad pulley, bad belt to a bad tensioner. Make sure to route the belt to the right direction/diagram. The belt will need to be tight so it wont slip off. I hope you can fix it.

[@Rob-ln-Real_Life]

Installed incorrectly

[@panseycain7086]

Hi, can you please tell me if I have a bad water pump or is it just the serpentine belt. Thanks.

[@mastercdiychannel8063]

Pansey, I won't be able to tell without seeing a video of it. What is wrong with the car?

[@rjkulman8990]

remove belt, listen for bearing noise, same as other pullies, if leaking or noisy --- replace

[@everetteramey5723]

I must have a dirty belt; I replaced all the pulleys and check the other ones and chirping..

[@kennethmay6343]

Have you looked into this yet? I’m about to try to replace the Idler pulley on mine and see if it still is squeaking..

[@everetteramey5723]

@@kennethmay6343 I haven't changed the belt yet; someone told me to check all the other pulleys by spinning them or pulling up and down on them and they didn't feel loose.. I KZbin 303 aerospace protectant it quieted that belt for 2 weeks.. I'm going to clean the pulleys then spray the belt down again.. That belt doesn't have any breaks in it. When I get time I'm going to clean everything.. I been working on my other vehicle to get working . KZbin 303 aerospace protectant and how to clean idler pulleys.. before getting a new belt research which ones are of quality. Some belt will tend to chirp more often than others..

[@Rob-ln-Real_Life]

Turn the car on with the belt off ..if the chirping stops you know it’s a pulley

[@groovyruben7776]

I would’ve left the belt hanging