Idler and Tensioner Change
03-20-2010, 06:44 PM
#1
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2001 E55, 2002 ML55, 2002 SL500, 2003 CLK55
Idler and Tensioner Change
Thought at 90k it'd be a good time to change out my idler/tensioner/belt.
Little did I know that my idler was cracking and my tensioner was no longer spinning smoothly.
Here's a pic of my idler next to the new one. Scary!
All in all fairly simple job.
The scariest part is holding the tensioner tensioned with a pin so that you can gain access to the bottom torx bolt. Scary since there's quite a bit of tension locked up there.
Little did I know that my idler was cracking and my tensioner was no longer spinning smoothly.
Here's a pic of my idler next to the new one. Scary!
All in all fairly simple job.
The scariest part is holding the tensioner tensioned with a pin so that you can gain access to the bottom torx bolt. Scary since there's quite a bit of tension locked up there.
03-25-2010, 10:22 AM
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320ml
I just had to change mine the other day it totally cracked and broke in half braking the serpentine belt i was surprised to see it was plastic. im just glad it happened as I pulled into the driveway.
03-25-2010, 02:06 PM
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2001 E55, 2002 ML55, 2002 SL500, 2003 CLK55
Don't forget to check your tensioner too.
Might be in bad shape given the condition of the idler.
