E200 w124 tensioner pulley wobbling

Swifters

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W124 E220
Hi, I have a e200 where the tensioner pulley sheared off. I replaced the pulley and tensioner arm and drivebelt all with genuine Mercedes parts. It has been fine for about a month but has now started to wobble. Have I not tightened the nut up to the correct torque or something? I asked Mercedes when I purchased the parts what torque it should be tightened to but got a shrug back. Any help much appreceated. I've included a picture with a red arrow taken from above engine bay. Good 5-10mm deviation with engine running.
 

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Alex Crow

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W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
surely just take the belt off and have a look?
 

wireman

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Is there a damper fitted to your tensioner? if so it might be jiggered.
 

television

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Jiggered means no good

I can let you have the tensioner fitting paper with all the info on it
 
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Swifters

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I did fit a brand new tensioner though so is this possible? Any info you have on the tensioner would be useful. thank you
 

television

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2002 SL500, 216 CL500, all fully loaded
With an Email address I can sen you the info
 
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Swifters

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W124 E220
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I took the whole lot apart and found out I'd fitted the new damper/piston the wrong way round. The bolt had pulled apart from the bottom of the assembly and the auto. tensioner had no support. Thank you for all the replies. I'll be more careful next time.
 
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