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  #1  
Old 11-25-2012, 06:08 PM
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91 500sl transmission problem

Wife was driving the 1991 500sl with 70k miles when the car lost power and stopped.The engine was running fine but the car wouldn't move in any gear even stranger the car would roll when in park.

While removing everything need to pull the transmission I noticed the transmission mount on the back case had been broken.While taking a closer look noticed that the rear output flange would spin with the transmission in park but the output shaft would not

Turns out the rear output flange splines were completely stripped and the rear bearing seized!
The transmission appears to function normally otherwise
Dropped the pan and it was surprisingly clean as was the filter..

Found a rear transmission case with good bearing at pullapart junk yard for $10 but can not find a 4 tab output flange.All the 300 & 420 with 722.3 transmissions had 3 tab flanges.

Can anyone suggest a good place to get a used output flange?
Would like to avoid dealer price on that item.

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  #2  
Old 12-04-2012, 08:00 PM
88Black560SL
 
Join Date: Oct 2004
Location: CT
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Is't doing to have to come from another 500 between 1990 and I believe 1994.They were about $135 new for a 3 lobe.

I need a 4 lobe on the differential if you can find one.
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  #3  
Old 12-05-2012, 11:48 AM
is thinning the herd
 
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Have you called the dealer?

Mercedes dealership parts really aren't as shockingly expensive as people like to say they are, also they will usually work with you and discount the part off retail if you are nice to them.
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Old 12-16-2012, 10:00 PM
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Dealership wants $380.00 for the flange

ECS tuning has the flange listed for $220.00

Was hoping to find one cheap from a blown tranny

If anyone needs a 3 tab flange I have one from a 722.3 transmission.
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  #5  
Old 12-21-2012, 08:34 PM
88Black560SL
 
Join Date: Oct 2004
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Quote:
Originally Posted by sbin View Post
Dealership wants $380.00 for the flange

ECS tuning has the flange listed for $220.00

Was hoping to find one cheap from a blown tranny

If anyone needs a 3 tab flange I have one from a 722.3 transmission.
I'm not surprised. I paid $135 for a 3 lobe. I would assume the 4 lobe units are significantly more due to age and low production numbers. I was also quoted $25 for the diff 4 web flange.

You might be able to make a deal with someone on E-bay selling a 4 lobe flange transmission. They should interchange.
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  #6  
Old 12-09-2014, 05:48 PM
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http://www.peachparts.com/shopforum/diesel-discussion/301813-transmission-problem-fix-2.html#post3417479

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