Lost air pressure. Springdale Montana.

Discussion in 'Freightliner Forum' started by xsetra, Feb 21, 2020.

  1. xsetra

    xsetra Road Train Member

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    Lost air pressure. Changed governor. Checked air from compressor not very strong. I can feel compressor sucking air in.
    Exhaust to dryer I can hold finger over opening. Very little pressure.
    I need a mechanic/ tow. I'm near Springdale Montana. 95 miles west of Billings on I90.
    Suggestions are welcome.
    Thanks.
     
  2. Snailexpress

    Snailexpress Road Train Member

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    Stack open or broken unloader valve in compressor head. Try to spray some WD-40 in compressor intake to loose soot deposits. And try to disconnect 1/4 inch airline from air dryer to eliminate faults from dryer.
     
    xsetra Thanks this.
  3. xsetra

    xsetra Road Train Member

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    Thank you. I will try that.
     
  4. Snailexpress

    Snailexpress Road Train Member

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    Disconnect both intake and pressure side so compressor can blew out WD-40 and soot. Cover pressure side with rag or it will be over your face.
     
    HoneyBadger67 and xsetra Thank this.
  5. Dave_in_AZ

    Dave_in_AZ Road Train Member

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  6. Odin's Rabid Dog

    Odin's Rabid Dog Heavy Load Member

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    Don't do that. Others may learn from your experience.
     
    Snailexpress and MACK E-6 Thank this.
  7. xsetra

    xsetra Road Train Member

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    Thanks.
    No
    ew minutes.
    I opened both intake and exhaust.
    Sprayed wd40 . Let sit for a few minutes.
    Idled up, no change in air pressure.
     
  8. xsetra

    xsetra Road Train Member

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    The reason I asked for delete. I had decided to call a tow truck. Since it's Friday afternoon and I don't want to hang out on the interstate all weekend.

    I will post repair required.
    I changed governor.
    I did remove all connections at air dryer and air compressor.
    I had system air none from compressor.

    I can feel air getting sucked in to compressor. Not as much coming out.

    I sprayed wd40 in to unloader valve. No improvement.
     
    Odin's Rabid Dog Thanks this.
  9. xsetra

    xsetra Road Train Member

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    I took both lines off. Sprayed in the intake. Nothing much comes out the other side.
     
  10. Snailexpress

    Snailexpress Road Train Member

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    Probably valve is cracked. How old is engine?
     
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