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#1
05-16-2009, 12:12 PM
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Do all W202 have a shock on the serp belt tensioner?
My 1998 C230 needed a new serpentine belt tensioner. There is no tensioner dampener ( shock absorber) on the one I took off nor is there an attchment point on the tensioner I took off. The new tensioner has an attachment point for a dampener. Is my car supposed to have a dampener and/or is this the wrong tensioner for my car?
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John 1998 C230 for the wife 1986 Porsche 944 Turbo for me in the summer  1993 Audi 90 for me in the winter 
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#2
05-16-2009, 03:11 PM
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I just looked at mine and it has no external damper on it. I think there is a spring inside. Sounds like you have the wrong one maybe. Where did you get it? Did you need the whole thing or just the pulley?
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#3
05-16-2009, 09:18 PM
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I got the tensioner without the pulley. I used the pulley off the old one. The bearing was fine. Got from FCpgroton. Guess I gotta return it.
__________________
John 1998 C230 for the wife 1986 Porsche 944 Turbo for me in the summer 1993 Audi 90 for me in the winter
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#4
05-18-2009, 04:40 PM
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Just called the dealer and they said the new updated tensioner has the separate shock absorber. Apparently the type on my year car is the older no longer made version. So now I need to determine where on the front of the motor the shock would attach to and get the shock.
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John 1998 C230 for the wife 1986 Porsche 944 Turbo for me in the summer 1993 Audi 90 for me in the winter
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#5
05-18-2009, 04:47 PM
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All M111 engines with new version tensioner must be retro-fitted with a belt shock!
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#6
05-18-2009, 08:51 PM
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M.B.DOC,
What was wrong with the old kind?
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#7
05-19-2009, 08:15 AM
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They rattled & went "bad" too often! So MB had it re-designed.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#8
05-19-2009, 11:41 AM
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Mine started rattling at 130K miles only when in drive or reverse. I ordered the shock. The bracket to attach the top of the shock is next to the thermostat. The bracket is threaded. Anyone know what size bolt to use for the top bracket?
__________________
John 1998 C230 for the wife 1986 Porsche 944 Turbo for me in the summer 1993 Audi 90 for me in the winter
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