ml 270 cdi aux belt change

[leigh_f]

Hi i have searched the forum high and low but am looking for an idiots guide to changing the aux belt on my car. or a couple of pics/ diagrams to point me in the right direction
thanks

 

[panason1c]

First, draw a diagram of the routing of the belt before you remove it, then remove the front undertray to enable you to access the belt from below, there is a small hole on the underside of the spring loaded belt tensioner (the part that moves when you pull on the belt) , select a drill bit that will go into the hole and then pull hard on the belt to force the tensioner back far enough so that the drill bit locates thru the tensioner hole and into a recess in the block, this will lock the tensioner in place when you release the belt, with the belt free of tension you will be able to remove it and re-route the new one into place, just pull hard on the new one, once fitted, to tension the tensioner and enable you to remove the drill bit.

 

[leigh_f]

many thanks spot on advice!