Eaton Fuller 13 Speed - Need help identifying part

Discussion in 'Trucks [ Eighteen Wheelers ]' started by HDFatboy, Mar 13, 2015.

  1. HDFatboy

    HDFatboy Light Load Member

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    Sep 22, 2011
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    I have air leaking from this part on the transmission. I took it off and the gasket is bad. However I have been looking through the parts diagram and can't seem to find what this part is called.

    Closest dealer is over an hour away and I want to make sure they have it first.

    [​IMG]
    [​IMG]
     
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  3. sailboatjim

    sailboatjim Light Load Member

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    Aug 27, 2014
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    That the range valve I believe.
    It cycles when you go from low to high range.
     
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  4. HDFatboy

    HDFatboy Light Load Member

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    Thank you. I got it all cleaned up, installed new gasket, and it no longer leaks.

    For future reference, I needed the Eaton Fuller o-ring kit part # K-3341
     
    blanco and rank Thank this.
  5. Cetane+

    Cetane+ Road Train Member

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    Albany, NY
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    It looks like the oring on that shaft is leaking letting oil into the air cylinder. You "can" change it without taking the rear case off, but it is harry. You need to make sure you dont lose where the shift fork rides on.
     
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  6. HDFatboy

    HDFatboy Light Load Member

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    Thanks for the info! The kit contained a few gaskets and o-rings but I only replaced the cover gasket where it was leaking air.

    When I get a chance I will take the cover off again and inspect it.
     
  7. sailboatjim

    sailboatjim Light Load Member

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    Good deal. I wish everyone finished their threads like this. It helps anyone coming in behind you.
     
    puncher Thanks this.
  8. hkooner

    hkooner Bobtail Member

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    Sep 14, 2016
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    Hello my friend I have same problem gasket air leak from same place. I bought oRing kit. Is it easy to put new gasket ? I seen in photo there is 4 screw. Only open those no need to disconnect any air hose or air filter regulator ? Can you please give me instructions thank you
     
  9. Baldo esparza

    Baldo esparza Bobtail Member

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    Jul 22, 2019
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    Have any one put the complite oring kit k3341
     
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