Tag: pulley

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, Replacing The Crankshaft Double Pulley

After a incident in the garage, I had the idea that the crank pulley had a slight wobble. As these pulleys are known to separate (after a long period), I didnt feel comfortable with the car and made the decision to get this replaced.

Off course, its not a cheap item to replace, as this is an AMG specific item (2 belts running of the crank pulley, 1 for the accessory belt (6 ribs) and 1 for the supercharger (8 ribs)).

I went to Mercedes specialist Ralph Eidams in Brunssum where they were able to replace it within the hour, keeping down costs on labour. Even though it probably wasn’t necessary, I ultimately did it for peace of mind. I also let them replace the front main axle seal (krukaskeerring).

Partnr crankshaft pulley: A1130300103

Partnr crankshaft pulley bolt: 0009900200

Partnr front main seal: A0239978447

Ralph Eidams: https://www.ralpheidamsmercedes.nl/

CLS55 on the 2 post ramp

Mercedes CLS W219 on the 2 post ramp

Old crankshaft pulley out

New crankshaft pulley A1130300103 in place!




Mercedes CLS55 AMG W219, Replacing The Supercharger Idler Pulley

I noticed that the supercharger idler pulley had quite some dirt accumulation on it and also felt a bit of play, so decided to replace it with a new pulley. I made the right decision as the grease was escaping and therefore attracting the dirt.

Runs smooth again with the new pulley. When I will upgrade with billet pulleys, I will also replace the tensioner itself.

Old (+dirty) and new pulley



Mercedes CLS55 AMG W219, Replacing the Supercharger Pulley Bearing (Nachi)

I decided to replace the supercharger pulley bearing with a fresh new Japan made Nachi bearing. One of the easiest way is the hot/cold method, where you heat up the pulley and freeze the bearing itself. This results in the bearing sliding into the pulley with relative ease.

I could’ve also used my workshop press, but I didn’t want to force it in. I followed this guide for it:

Some more pictures:

All CLS55 AMG pictures here in my Google Photos album: https://photos.app.goo.gl/6SP5PFAUXCqanoSX9




DeWalt DCF899 impact wrench VS stubborn Volvo S80 Crank Pulley Nut VS Parkside PASSK 20-Li A1

I have been trying to get the crank pulley nut of the vibration damper of my P2 Volvo S80, but have been unsuccessful so far. I tried multiple times with heat, breaker bars, my Parkside PASSK 20-Li A1 impact wrench etc etc.

Decided to invest in a premium brand impact wrench and it has surpassed my expectations! Check my video