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Air leak at splitter

Discussion in 'Trucks [ Eighteen Wheelers ]' started by kwforage, Feb 11, 2020.

  1. Feb 11, 2020 #1
    kwforage

    kwforage Road Train Member

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    Jun 3, 2007
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    I have a RTLO18913 that will leak air for a second at the shift knob when splitting down form the high side to the low side. It still shifts fine, everything seems normal except this little spit of air everytime I split down. Any ideas?
     
    kwforage, Feb 11, 2020
    kwforage, Feb 11, 2020
    #1
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  3. Feb 11, 2020 #2
    AModelCat

    AModelCat Road Train Member

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    Did it just start doing it?

    The valve on the stick is meant to exhaust air from the cylinders on the transmission IIRC. Could just be normal operation.
     
    AModelCat, Feb 11, 2020
    AModelCat, Feb 11, 2020
    #2
  4. Feb 11, 2020 #3
    kwforage

    kwforage Road Train Member

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    Jun 3, 2007
    Wisconsin
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    Just started, it's not the normal exhaust air leak.
     
    kwforage, Feb 11, 2020
    kwforage, Feb 11, 2020
    #3
  5. Feb 11, 2020 #4
    Deere hunter

    Deere hunter Road Train Member

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    Mine does something similar to that every once in a while so when I park for the night I just sprayed WD-40 in all the little cracks wipe it down and go to bed next morning no leak!
     
    Deere hunter, Feb 11, 2020
    Deere hunter, Feb 11, 2020
    #4
  7. Feb 12, 2020 #5
    lester

    lester Midwest's #1 Feed Hauler

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    Likely you just have an o-ring that's leaking a little. Could be cut or just dry. Simple enough to take the top off and replace and lube everything up. Or just leave it be. Mine leaks pretty much constantly when the splitter is back. I haven't bothered to take it apart, I just primarily leave the splitter forward
     
    lester, Feb 12, 2020
    lester, Feb 12, 2020
    #5
  8. Feb 12, 2020 #6
    Mike250rs

    Mike250rs Heavy Load Member

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    Sep 24, 2019
    Raleigh, NC
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    rebuild kits are fairly cheap, but honestly just a good cleaning and lub on the springs will work wonders
     
    Mike250rs, Feb 12, 2020
    Mike250rs, Feb 12, 2020
    #6
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