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Air dryer purging every 10 seconds

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bigstank, Sep 7, 2015.

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  1. Sep 7, 2015 #1
    bigstank

    bigstank Light Load Member

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    Hey guys need some info here. I had to replace the air governor (mines on the air dryer under the truck) I put a new non adjustable one on (cause that's all the shop had) and it builds pressure up to about 130lbs and purges every 10 secs. When I driving down the road and give it throttle the purging does it repeatedly every sec until I let off. Can someone explain to me what's up with this junk lol thanks
     
    bigstank, Sep 7, 2015
    bigstank, Sep 7, 2015
    #1
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  3. Sep 7, 2015 #2
    Heavyd

    Heavyd Road Train Member

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    Usually massive leak in the signal line/system between air dryer and compressor will cause issues like this. The unloaders in the compressor could be leaking as well.
     
    Heavyd, Sep 7, 2015
    Heavyd, Sep 7, 2015
    #2
    bigstank and SLANT6 Thank this.
  4. Sep 7, 2015 #3
    SLANT6

    SLANT6 Road Train Member

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    Your compressor is constantly running. As said in last post, unloader could be full of carbon and stuck
     
    SLANT6, Sep 7, 2015
    SLANT6, Sep 7, 2015
    #3
  5. Sep 7, 2015 #4
    bigstank

    bigstank Light Load Member

    87
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    Mar 4, 2013
    missouri
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    No leaks I checked. I believe it's probably time for a new dryer. I haven't changed this one in 5yrs
     
    bigstank, Sep 7, 2015
    bigstank, Sep 7, 2015
    #4
  7. Sep 7, 2015 #5
    bigstank

    bigstank Light Load Member

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    Mar 4, 2013
    missouri
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    Air compressor on this truck is only a year old and fills the air system up quickly as normal
     
    bigstank, Sep 7, 2015
    bigstank, Sep 7, 2015
    #5
  8. Sep 7, 2015 #6
    SLANT6

    SLANT6 Road Train Member

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    The Nut House
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    Yeah the Air Compressor works, we know that because it builds up to it's max and the safety valve trips. Your compressor is not shutting off.
    But go ahead and change out the drier if you don't want to listen
     
    SLANT6, Sep 7, 2015
    SLANT6, Sep 7, 2015
    #6
  9. Sep 8, 2015 #7
    bigstank

    bigstank Light Load Member

    87
    19
    Mar 4, 2013
    missouri
    0
    Changed out the air dryer this morning and problem solved. Thx for the info guys
     
    bigstank, Sep 8, 2015
    bigstank, Sep 8, 2015
    #7
  10. Sep 8, 2015 #8
    MACK E-6

    MACK E-6 Moderator Staff Member

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    With the apparent rectification of the OP's problem, we're done here.
     
    MACK E-6, Sep 8, 2015
    MACK E-6, Sep 8, 2015
    #8
    bigstank Thanks this.
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