W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Is my belt too big? Feels like it's slipping

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Old Jun 7, 2012 | 11:19 PM
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CLS55 AMG
Is my belt too big? Feels like it's slipping

I took off my engine cover and saw that there's some rubber deposits on the underside. looks like it came from the s/c belt. this belt is brand new and was put on when I had my 175mm EC pulley installed. is this belt too big for this pulley? if so, which belt should I use instead?



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Old Jun 8, 2012 | 06:15 AM
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2003 W211 E55, 2003 W220 S600
Go with a size smaller
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Old Jun 8, 2012 | 10:09 AM
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My OEM belt dusts up the underside of the cover like this.. Everytime I back off a hard pull it squeals.. Stock pulley///
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Old Jun 8, 2012 | 12:31 PM
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CLS55 AMG
Originally Posted by shardul
Go with a size smaller
Would a size smaller be K080510?
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Old Jun 8, 2012 | 01:06 PM
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The K080514 is what I used with my EC 172mm pulley. Seemed to work well.
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Old Jun 8, 2012 | 04:27 PM
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Originally Posted by xpl0sive
I took off my engine cover and saw that there's some rubber deposits on the underside. looks like it came from the s/c belt. this belt is brand new and was put on when I had my 175mm EC pulley installed. is this belt too big for this pulley? if so, which belt should I use instead?




that belt (51.4 in) is the same belt that is used on the 172mm pulleys so i cant imagine it being to big for yours, if anything it would be a bit on the tight side
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Old Jun 8, 2012 | 05:15 PM
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2005 E55
For the OP, one thing to consider-- how do you know whether the dust is from the old belt, the new belt, or both?
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Old Jun 8, 2012 | 05:40 PM
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i cleaned the dust from the old belt before i had this one put on. so i know it's from this belt
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