idler belt pulley fell off... need help
Thread Starter
Super Member
Joined: Jan 2012
Posts: 526
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From: ChiTown
e46 m3, w211 e55
idler belt pulley fell off... need help
So I opened the hood and found the SC idler puller (tensioner drive belt pulley or whatever its called) on the floor.
I can't tell what is suppose to be there to hold it in place. Can you tell from the pic what is missing for me to put it back on? Also anything else I should check?
Is the car OK to drive without the belt on the SC? The rest of the belts are working fine. This is the belt tensioner pulley that connects to SC (but not the SC pulley itself - that is fine).
I can't tell what is suppose to be there to hold it in place. Can you tell from the pic what is missing for me to put it back on? Also anything else I should check?
Is the car OK to drive without the belt on the SC? The rest of the belts are working fine. This is the belt tensioner pulley that connects to SC (but not the SC pulley itself - that is fine).
MBWorld Fanatic!
Joined: May 2009
Posts: 1,187
Likes: 239
From: Santa Clara, Ca
2003 SL55 / 2002 SLK32
So I opened the hood and found the SC idler puller (tensioner drive belt pulley or whatever its called) on the floor.
I can't tell what is suppose to be there to hold it in place. Can you tell from the pic what is missing for me to put it back on? Also anything else I should check?
Is the car OK to drive without the belt on the SC? The rest of the belts are working fine. This is the belt tensioner pulley that connects to SC (but not the SC pulley itself - that is fine).
I can't tell what is suppose to be there to hold it in place. Can you tell from the pic what is missing for me to put it back on? Also anything else I should check?
Is the car OK to drive without the belt on the SC? The rest of the belts are working fine. This is the belt tensioner pulley that connects to SC (but not the SC pulley itself - that is fine).
it looks like the bearing merely came apart. The inner race is still attached to the mount on the motor and the outer race is still retained in the pully by its retaining clip.
Replace the bearing ... directions can be found here https://mbworld.org/forums/w211-amg/...ng-repair.html
hope that helps,
Chris
Thread Starter
Super Member
Joined: Jan 2012
Posts: 526
Likes: 4
From: ChiTown
e46 m3, w211 e55
it looks like the bearing merely came apart. The inner race is still attached to the mount on the motor and the outer race is still retained in the pully by its retaining clip.
Replace the bearing ... directions can be found here https://mbworld.org/forums/w211-amg/...ng-repair.html
hope that helps,
Chris
Replace the bearing ... directions can be found here https://mbworld.org/forums/w211-amg/...ng-repair.html
hope that helps,
Chris
MBWorld Fanatic!
Joined: May 2009
Posts: 1,187
Likes: 239
From: Santa Clara, Ca
2003 SL55 / 2002 SLK32
Thanks so much. I was able to push the portion of the bearing out of the pulley... just need to find a new bearing for replacement. Do you happen to know in the meantime if safe to drive without? Also is there a local option to source a replacement bearing? e.g. Mercedes part #?
The bearing is not a Mercedes service part as far as I know, so there would be no mercedes part number. You can likely pick it up at your local Motion Industries location if you can't wait to get it from amazon, ebay, etc. The 6203zz part number is a designation that describes the bearing and is not manufacturer specific. The zz part refers to the metal grease/dust shield and is not deal-breaker if you can't get it (as long as they have a 6203 that is sealed and is rated similarly for load and speed).
Hope that helps,
Chris
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Joined: Jan 2014
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From: Republic of Texas
'99 and '05 E55 AMG
Purchase the bearing off of Amazon. NSK 6203 ZZC3 or equivalent. They're cheap. While you're at it, replace the plastic pulley with a Dayco 89130. My cost was about $27 for bearing and pulley.
While you're at it, you'll want to take a look at all the other pulleys; may be easier to replace them all right now while you have the belts off.
While you're at it, you'll want to take a look at all the other pulleys; may be easier to replace them all right now while you have the belts off.
