W208 ... Belt damper? Rattling / tapping noise from front.

whitelockben

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I went to merc spec today wit ha rattle coming from my 1999 W208 200. The advised me it was the belt dampner? Just wondering if anyone could shed any light on this and how hard to job was to do at all? And possibly a part number if any one would know it? I've never heard of a belt damper.

Thanks

Ben
 

Alex Crow

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presdumably this noise is most pronounced at idle? if by damper you mean the belt tensioner, this is not uncommon. if you car is a kompressor variant it will have two of these, so be sure you get the right one. they are dead easy to fit but some are quite pricey indeed. hope that helps ben (is it ben?)
 
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whitelockben

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yeh it is at idle! brilliant. its naturally aspirated. just wondering if there was a how to on the forum. ive tried a serch but not getting much back. any idea what part to look for. just a belt tensioner from my locl motorfactors?
 

brianbrian

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Not expensive to have it done in the garage 1hours labour, but I would have the belt changed also while they are at it, parts approx- £100
 

Alex Crow

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i doubt you can get this part anywhere but MB. to fit it should only take 1/2 hr max. it is help on by 2 or 3 bolts with male torx heads, not sure of the size. the old tensioner needs to be turned anticlockwise with the 17mm tewin-hex casting below the tensioner wheel. then you may need to lock it with a 4 or 5mm pin - just look at the new one which comes with a throw away locking pin fitted to aid assembly. with the tensioner locked and the belt out of the way just unbolt and swap over. if it seems difficult when you get going that is because nothing is REALLY simple and a mechanics job is not that easy after all! but get back on here if you are struggling.
 
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whitelockben

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cheers to both of you thanks for the replies. will give it a go next week. should i be okay driving like that?
 

television

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Would you like a how to do this paper,,and welcome from me to the forum:D
 

turbopete

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cheers to both of you thanks for the replies. will give it a go next week. should i be okay driving like that?

i cant see why not. mines been rattling for months!
 
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whitelockben

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Thats alright then, shouldnt be for more than a week more though
 

slksimon

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hi there
our slk(200 kompressor) rattles just the same on tickover,i thought it was the supercharger,when you run it with the belt off it is sweet as a nut,there is an idler pulley and the tensioner pulley,how do you know which is the cause of the noise? brilliant forum by the way,just crammed with usefull info, regards simon
 

television

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Hello Simon you do have the damper and the idler,and any of these thing could cause a rattle, if you undo the top bot on the damper you could check that out, all in this link
 


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