Stuck Sump Nut

Discussion in 'Engine' started by design guru, Oct 24, 2011.

  1. design guru

    design guru Hardcore MB Enthusiast

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    The sump nut on my C240 W202 is stuck! It looks like the last owner attempted to undo it and damaged the outside so now not even a spanner or socket will fit properly.

    Any ideas or suggestions?

    I want to do an oil change and I have a new sump nut to replace but removing the original is the problem.
     
  2. artyman

    artyman Hardcore MB Enthusiast

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    Cut a slot and use a big screwdriver. Heating it may help as well.
     
  3. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    Suck the oil out with a oil sucker.
     
  4. grober

    grober MB Club Veteran

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    Like he says^^^^^^ gives you a little more time to think about the solution
     
  5. Ian B Walker

    Ian B Walker MB Club Veteran

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  6. NW_Merc

    NW_Merc Banned

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    Just adding to what Ian has just said, the bolt extractors are worth their weight in gold. However you will need to remove the bolt from the extractor socket with a pair of pliers and replace the sump nut with a new one.
     
  7. R.Sendout

    R.Sendout New Member

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    I did an oil change on mine yesterday and the sump bolt was silly tight. I would highly recommend the use of a 6 sided socket for doing this as the bolt used is quite soft.

    I know this doesn't solve your problem but I have also found the Irwin extractors very good, although not a guaranteed solution.
     
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  8. brucemillar

    brucemillar MB Club Veteran

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    Suck the oil out.
     
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  9. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    Weld a nut to it if your feeling brave.......
     
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  10. Harrythedog

    Harrythedog Hardcore MB Enthusiast

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  11. NW_Merc

    NW_Merc Banned

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    Is cheese really relevant here?
     
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  12. OP
    OP
    design guru

    design guru Hardcore MB Enthusiast

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    Took the weld option as I new a guy who helped me out when my wheel locking nut was damaged. He did say that even if I got the bolt extractors I would have probably had a job removing them as the nut was on so tight it took him 3 welds and it final gave way.

    Thanks for all the suggestions.
     
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