Tag: spanner

Mercedes CLS55 AMG W219 – Worn Serpentine Belt Tensioner Pulley (YouTube)

When you know its time to replace a worn serpentine belt tensioner pulley.

I changed it after 190.000km (118.000 in miles). Also see my previous post about the replacement tensioner from Trucktec Automotive with a steel pulley.

Worn belt tensioner pulley (YouTube)

Mercedes CLS55 AMG W219, New Serpentine Belt Tensioner

What do you do when you have a noisy serpentine belt tensioner? You replace it with a new one off course! Never skip an opportunity to buy new shiny parts 🙂

I was able to find a Trucktec Automotive tensioner for the m113k engine, which has a steel pulley instead of the known-to-fail plastic pulley. It’s an easy DIY task, the most time is spent on removing parts to get access to the tensioner.

Trucktec Automotive serpentine belt tensioner with steel pulley

Trucktec Automotive serpentine belt tensioner vs OE Mercedes Benz serpentine belt tensioner

New serpentine belt tensioner in place!