190E (W201) 1982-1993: 190E 2.3, 190E 2.6, 190E 2.3-16, 190E 2.5-16, 190 D 2.2, 190 D 2.5, 190 D 2.5 TURBO, 190E 2.5-16 Evolution I, 190E 2.5-16 Evolution II

SERPENTINE BELT TENSIONER BREAKING AJUSTER ROD COLLAR

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Old Sep 12, 2008 | 05:03 PM
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1986 190e
SERPENTINE BELT TENSIONER BREAKING AJUSTER ROD COLLAR

1986 190E 2.3 HAVE BROKEN 2 SERPENTINE BELT TENSIONER BREAKING AJUSTER ROD COLLAR WHILE WHILE TRYING TO ADJUST BELT TIGHT. I WOILD HAVE THOUGHT THE ROD WOULD HAVE BENT FIRST OT SOMETHING. BEFPRE BREAKING THE CAST METAL COLLAR
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Old Sep 12, 2008 | 06:47 PM
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
There

should in no way be enough tension on the rod to break the collar getting the belt tension correct.Have you measured for the proper belt length?That way you won't have to tighten it beyond spec.Do you have the spec for belt tension?How much it should be able to be pressed down at the test point.
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Old Sep 13, 2008 | 10:58 AM
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1986 190e
broke the first collar with the old belt. went to the dealer got the second adjusting rod/collar and also bought a new belt. be honest don't beleive it was close to being tight enough. put the tensioner in a vise and the shaft the collar attach's had no "spring" movement. not able to twist it to return to orignal spot. i've ordered a new tenioner kit. going through search's on the web last night ran across someone with the exact same problem. no luck with any repleys on the final repair.
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Old Oct 7, 2014 | 05:59 PM
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1989 190e
broken serpentine belt tensioner

Originally Posted by anderbud
1986 190E 2.3 HAVE BROKEN 2 SERPENTINE BELT TENSIONER BREAKING AJUSTER ROD COLLAR WHILE WHILE TRYING TO ADJUST BELT TIGHT. I WOILD HAVE THOUGHT THE ROD WOULD HAVE BENT FIRST OT SOMETHING. BEFPRE BREAKING THE CAST METAL COLLAR
you routed the belt wrong, find the diagram .. I just broke two collars and wasted so much time. get a print out or find the diagram , because the belt will squeal uncontrollably for ever if you don't . STOP tightening do it right.
when it is routed properly your belt will be quiet and the water pump will flow right and the alternator will charge , please believe me ,learn from my horrible experience.
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