SOURCE: how do I replace a fan belt on C280 model with air conditioner
You find a 17 mm bolt under the belt or a 15 mm bolt in the middle of the tension pulley. If you undo the bolat this will
release the belt tension.
To remove the belt turn the bolt by slipping a 4' pipe
over the socket wrench handle.
Use a wrench as a lever to slide out the belt. Put the new belt last on the idler pulley that contacts the belt only on the smooth
side.
Do not unscrew the Button Torx bolt in the center of the tension pulley, it is not needed.
SOURCE: drive belt diagram 1990 300se mercedes
I know it's a little large, but here's the belt routing diagram you are looking for. Hope it helps!
SOURCE: renew fan belt mercedes vito cd1 112
high i have a 2002 merc vito. there is exaust fumes coming through the air vents when moving. i have to keep the air circualting with in the cabin to stop it, but does any one know how to fix my problem?
SOURCE: need a diagram to replace fan belt for mercedes
Hello there sorry it took a while but here it is
Belt Routing Diagram 
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hope this works
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