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  #1  
Old 09-25-2006, 04:55 PM
droland52's Avatar
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Location: Brooksville, FL
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1988 300te Differential help

Coming home from Key West, the rear differential on a 300te (170K) began to howl and bellow smoke. Hot fluid was dripping from the differential case and flung on the rear hatch. It had a previous light leak, had it checked and was OK'd. Now, it makes a grinding noise in D or R, and will not move. Makes the same noise when pushed in N.With the help from a friendly motorist, I rented a UHaul and dolly to carry it the final 130 miles home.

I have located a used differential from an eBay used parts dealer in SC ($150+50 shipping). During the discussion with him, there was a mention of a possibility of a driveshaft bearing seizure. My mechanic confirmed this possibility, however, when this occurs, it wipes-out the differential(?). The excessive heat changes things.

These rearends are suppose to be bulletproof. How did this occur - low fluid level? How do I proceed with this?

Best Regards
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  #2  
Old 09-26-2006, 08:06 AM
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If the drive shaft was the problem then you wouldn't have a fluid leak at the diff.

The most common failure of MB differentials is leakage! IF a leak ISN'T repaired properly then the differential bearings are at RISK...
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  #3  
Old 09-26-2006, 08:29 AM
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the only other failure i have seen is a fellow who ran different sized tires on the rear, and the constant diff action boiled out his fluid and ruined the bearings.

tom w
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Old 09-26-2006, 11:08 AM
david s poole
 
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Location: dallas
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diff

make sure you get ratio from wagon,sedan is not same.prob cause is lack of fluid .diff gets hot on trip.
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  #5  
Old 09-28-2006, 09:25 PM
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300te differential

I thank you all for the replies. I think I will replace the entire differential assembly.

Best Regards
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