Trying to unloosen the tension pulley

TIMOTHY GIPSON

MEMBER
1999 MERCEDES BENZ ML320
210,354 MILES

My first problem is trying to unloosen the tension pulley to put the belt back on. Do I even need a tool or can I just put it back on? And my second question is where does the engine coolant hose at the top go to?

Monday, October 2nd, 2017 AT 9:37 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
43,070 POSTS

There is a bolt on the front of the tension-er that is used to move the tension-er so you can install the belt.

Here is a guide ad some diagrams (Below) so yo can get the job done:

https://www.2carpros.com/articles/replace-serpentine-belt

and

https://www.2carpros.com/diagrams/mercedes-benz/ml320/1999

Here is how it is done on your car:

Please let us know what happens.

Cheers, Ken

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