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Rubber airlines on 13 speed transmission

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by earnies2, Jun 18, 2023.

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  1. Jun 18, 2023 #1
    earnies2

    earnies2 Medium Load Member

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    May 17, 2012
    Dedham, MA.
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    I have a 13 speed trany and 2 of my rubber airlines are leaking. Not bad but if I stop for the night I loose airpressure unless I put the shifter in high range and overdrive.
    Can I replace thoes lines with ¼ inch plastic airlines? Or do I need to get replacements from the dealer. .. thanks in advance
     
    earnies2, Jun 18, 2023
    earnies2, Jun 18, 2023
    #1
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  3. Jun 18, 2023 #2
    BoxCarKidd

    BoxCarKidd Road Train Member

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    1/4" plastic will work fine.
     
    BoxCarKidd, Jun 18, 2023
    BoxCarKidd, Jun 18, 2023
    #2
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  4. Jun 18, 2023 #3
    Snailexpress

    Snailexpress Road Train Member

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    Rocky
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    Are you sure leaking is on air line ? In most cases leaks is inside air actuator.
     
    Snailexpress, Jun 18, 2023
    Snailexpress, Jun 18, 2023
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  5. Jun 18, 2023 #4
    woolybully35us

    woolybully35us Medium Load Member

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    Mar 13, 2015
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    mine was leaking at the crimp on the rubber lines i replaced them with 1/4" plastic works just fine
     
    woolybully35us, Jun 18, 2023
    woolybully35us, Jun 18, 2023
    #4
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  7. Jun 18, 2023 #5
    earnies2

    earnies2 Medium Load Member

    691
    281
    May 17, 2012
    Dedham, MA.
    0
    Well I sprayed them with soapy watter and got bubbles.
    Whare is theactuator located I will check it out
     
    earnies2, Jun 18, 2023
    earnies2, Jun 18, 2023
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  8. Jun 18, 2023 #6
    Last Call

    Last Call Road Train Member

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    JMO.. but those rubber airlines gota be older than dirt
    Reguardless I would be replace them for a number of reasons
    1 reason.is they moght be chaffing internally and when the do they start plugging things like your actuator
     
    Last Call, Jun 18, 2023
    Last Call, Jun 18, 2023
    #6
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  9. Jun 18, 2023 #7
    earnies2

    earnies2 Medium Load Member

    691
    281
    May 17, 2012
    Dedham, MA.
    0
    I belive they are original from 2009 with 800k on them
     
    earnies2, Jun 18, 2023
    earnies2, Jun 18, 2023
    #7
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  10. Jun 18, 2023 #8
    Last Call

    Last Call Road Train Member

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    I didn't think they were even using rubber line in 09
     
    Last Call, Jun 18, 2023
    Last Call, Jun 18, 2023
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  11. Jun 18, 2023 #9
    Snailexpress

    Snailexpress Road Train Member

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    Rocky
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    Actuators inside the gearbox. When you switch splitter air coming to one or other actuator to push rod inside. Hoses are cheap, check Fleet Pride store.
     
    Snailexpress, Jun 18, 2023
    Snailexpress, Jun 18, 2023
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  12. Jun 19, 2023 #10
    earnies2

    earnies2 Medium Load Member

    691
    281
    May 17, 2012
    Dedham, MA.
    0
    Does the transmission need to be removed to get to the acuater?
     
    earnies2, Jun 19, 2023
    earnies2, Jun 19, 2023
    #10
    Rideandrepair Thanks this.
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