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  #1  
Old 10-17-2005, 05:51 PM
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need to prepare new washers for differential fluid change?

For W124 rear differential fluid change, must I prepare two new washers?
Or is it OK to re-use existing washers?

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  #2  
Old 10-17-2005, 08:12 PM
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Differential Washers

Hi,---- The answer to your question is NO. I have owned a 91 & presently a 95 w124 that I have done differential service on. The fill & drain plugs are tapered pipe thread which do not require a sealing washer. They are 14 MM HEX size. You will need a 1/2" drive hex 14MM & a breaker bar to "crack them loose", sometimes they "are in there". Make sure you remove the fill plug FIRST, if you drain it & can't remove the fill plug, you have a " Big Problem ". Good Luck ,------ Ray
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Old 10-17-2005, 09:46 PM
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Good advice from Ray - especially on removing the fill plug first.

It's also a good idea to either wrap teflon tape on the threads or treat them with neversieze to prevent them from rusting on in the future.
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Old 10-18-2005, 09:29 AM
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Excellent advise from above. Make sure you have a breaker bar that is plenty long enough.
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  #5  
Old 10-18-2005, 11:26 AM
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It also helps to spray them with a penetrating oil a few times x a few days before you intend to remove them. By doing this I didn't need a breaker bar or have any trouble removing mine after 12+ years becoming stuck.

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