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Cat 320bl engine oil leaking??????

Discussion in 'Excavators' started by will, Jan 19, 2011.

  1. will

    will Member

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    On top of the valve cover there is a breather tube that is leaking some oil. What could the cause possibly be? Thanks.
     
  2. willie59

    willie59 Administrator

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    Do you mean that breather pipe is leaking oil at connection to valve cover, or the breather pipe is leaking a considerable amount of oil out of the end of the pipe?
     
  3. will

    will Member

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    At the connection to the valve cover. Thanks
     
  4. willie59

    willie59 Administrator

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    If I remember the BL correctly, that crankcase vent gizmo simple fits into a hole in the casting of the valve cover, it's sealed with an o-ring. Over time, engine heat causes that o-ring to get hard as a brick and it starts seeping oil. Replace the o-ring seal and it should fix your leakage.
     
  5. will

    will Member

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    Thanks i will replace it and see what happens.
     
  6. dsichewski

    dsichewski Well-Known Member

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    Bingo....Atco you are completly correct!
     
  7. willie59

    willie59 Administrator

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    LoL...well, we'll see. :D