Replacing belt on E320

[JOHN07]

Could someone please tell me how to change the drive belt on my 94 E320? I have never replaced one on a Mercedes. Also the parts store has 3 different belt sizes. It asks for an engine range. How do I find this?

It's not really an easy job in my opinion to change the belt. I've removed and installed mine numerous times and each time I have to look at the owners manual for the correct routing over the pulleys. Look on the belt and it should have a part# on it that the parts store can cross reference.

If you look below the power steering pump pulley you should see a belt tensioner of which keeps the belt tight. I can't remember what size socket fits on the bolt (seems like it was a 13 or 15mm). Anyhow release the tension on the belt and it will slip off the power steering pump pulley, from there you can remove the rest of it.

I've found it's easier to this job if you first remove the radiator shroud, it will give you a bit more room to work in. Let me know if this helps, if you need more information I'm sure I can post a picture of the tensioner and the correct belt routing.

Here you go, I found a picture of the correct routing and it shows where the belt tensioner is.

What do you know, here's an even better picture with a description of the pulleys.

[englishman]

Contact Phil at Parts Shop, give him your VIN# and he'll get you the right belt (you're correct there are 3 options).
You may want to change the belt tensioner damper while you're in there if yours has the external damper.
You will also have to loosen the tension locking bolt - a 10mm hex socket work great.
To set the tension line up the arrow on the tensioner with the markings while tensioning the belt with the 13mm tensioner.
Hope this helps.