djjdnap

Ive seen a few other threads, but havent found a definite answer.

Driving today power steering went out battery light comes on and im like i now the belt didn't break.
Made it to a gas station belt is shredded and idler pulley at the top is cracked.

Ive only found

http://www.autopartswarehouse.com/sk.../FBI44976.html

as a replacement, is there a metal pulley option out there?

08 cls 63 78k miles

gianton

Post your VIN to check which is the correct part. I'd go for INA not FEBI BTW.

djjdnap

WDDDJ77X98A121101

gianton

The OE part nr is the A 156 202 06 19 and you should change both sheave pulleys (nr 50 and 65 from the epc picture attached).

Best aftermarket parts I could find are the SKF VKM 38527 and Gates T36619.

https://www.autodoc.co.uk/skf/7883359
https://www.autodoc.co.uk/gates/7957214

djjdnap

Can't seem to source those part #s here in the U.S.
I would have figured the gates would be available, but can't find anything.

gianton

Check the price with your MB dealer there should be some difference but not much.

djjdnap

just called they said nr 50 & 65 is the same part which is good.
​​​​​​​
56.99$ a piece

gianton

It's double the price of the aftermarket.

I am changing both idler pulleys along with the serpentine belt and belt tightener on my S204 with 155k miles just as a precaution. I got the INA pulleys/belt tightener and the Gates serpentine belt at 1/3 of the dealer prices.

djjdnap

Broke down and bought 2 from the dealer. Gates belt from orielly.

About 120$ for the pulleys and 37$ for the belt only because I can't afford to wait 5 days for shipping.

but none the less I cannot find a nr 65?

Edit:
my setup looks like this its 3 smooth pulleys 2,3&4 and 1 is the only grooved.
https://www.mbusa.com/vcm/MB/Digital...c_cls63amg.pdf
pg: 436-7 as i couldnt find an actual belt layout for my car using google.

djjdnap

After running the belt looks like 3 was supposed to be grooved as well?

djjdnap

Well got it all figured out.
After driving around today and just so happening to open the hood as i smelled antifreeze, the plastic smooth pulley had melted. Went to the dealership again 60$ but looking at the new and old pulley my old one had gotten long and skinny and i thought it looked weird when i put the belt back on in the first place.

Well went to oreilly and found a metal Gates pulley, especially after the guy at the dealer saying that the plastic pulleys were crap.

I also noticed that the Gates belt that orielly gave me was like 2373mm and the manual states 2360mm, so i also got a smaller belt.

Got everything back on just so happened to squeeze the radiator hose and it has a hole in it im guessing from when the pulley broke so now i have to wait until Tuesday because nobody has it in stock.

edit

Gates Part #s

36220 - Metal pulley
K060923 - 2360mm Belt