18 speed grinds while cruise is set

Discussion in 'Trucks [ Eighteen Wheelers ]' started by greasehorn, Feb 19, 2020.

  1. 25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    the road less travelled
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    Same ratios in high with final OD. You have more gears on the bottom, useful for heavy haul and off pavement, also steep grades.
     
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  3. BoxCarKidd

    BoxCarKidd Road Train Member

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    Loose bell or flywheel housing bolts?
     
  4. Chubby Fly

    Chubby Fly Medium Load Member

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    a broken spring inside the transmission? lol
     
  5. haycarter

    haycarter Road Train Member

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    Does It only do It when you're under Power or when Coasting...?????
    Or if you Pop It into Neutral ,Does It still Do It..??
     
  6. lester

    lester Midwest's #1 Feed Hauler

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    The rpms going up when the grinding starts doesn't make an #### sense. Only way rpm can go up is if there's something slipping between engine and the tires. Only thing that could really slip is the clutch. Anything else in the drivetrain won't slip. Are you sure the rpm are actually increasing and not just in the driver's head? How much are they increasing?
     
  7. Chubby Fly

    Chubby Fly Medium Load Member

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    18 speed huh. Rpms go up and grinding starts. That is in your auxiliary. Hi lo splitter isn’t staying engaged. Take it back in.
     
    swaan Thanks this.
  8. greasehorn

    greasehorn Bobtail Member

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    Feb 6, 2020
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    thank all of you for your help, ill be sure to let yall know what the problem is, im pulling the transmission in the morning. im not a driver, just a wrench (inexperienced one at that) someone said throw out bearing we replaced the clutch and it still does it, and it only does it while the cruise is set on flat ground, if you put it in neutral it stops. if you depress and release clutch it stops. i think its a bad syncro in the split gear, when i take the trans out it goes back to fleet pride and they dissassemble it and determine if they are going to warranty it or not, so im not holding my breath.... thanks again
     
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