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differential drain plug leak?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by TruckerPete1990, Aug 30, 2020.

  1. Aug 30, 2020 #1
    TruckerPete1990

    TruckerPete1990 Road Train Member

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    Noticed on My 2014 T680 the drain plug is leaking(The drain plug at the very bottom). I can honestly say i don't know how long its been leaking but its a small one maybe a drip every now and then. First question is what should the torque be on them? I tried to tighten but seems its just gonna spin and dont wanna rip it out.. If a shop over tighten this how would i go about fixing this without replacing the whole differential?
    Thank you
     
    TruckerPete1990, Aug 30, 2020
    TruckerPete1990, Aug 30, 2020
    #1
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  3. Aug 30, 2020 #2
    AModelCat

    AModelCat Road Train Member

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    IIRC its just a pipe plug in the bottom of most diffs. If its tight and leaking, you'll have to pull it out and put some teflon tape or thread sealant on it. If you don't want to drain all the oil, buy a new plug and do a quick swap.

    Just double check its not leaking out between the carrier and housing, dripping down onto the plug (the plug being the lowest point).
     
    AModelCat, Aug 30, 2020
    AModelCat, Aug 30, 2020
    #2
    Heavyd, spsauerland and Goodysnap Thank this.
  4. Aug 30, 2020 #3
    AModelCat

    AModelCat Road Train Member

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    If its loose, the plug (if its pipe thread) will be tapered and will tighten in there. Just use some common sense, if it looks like its threading into the housing (below flush) and not tighening, stop and access.
     
    AModelCat, Aug 30, 2020
    AModelCat, Aug 30, 2020
    #3
  5. Aug 30, 2020 #4
    Goodysnap

    Goodysnap Road Train Member

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    If the square is stripped, MIG weld a nut to the plug to get it out.
     
    Goodysnap, Aug 30, 2020
    Goodysnap, Aug 30, 2020
    #4
    AModelCat and spsauerland Thank this.
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