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9 speed hanging up

Discussion in 'Ask An Owner Operator' started by FinkPloyd, Nov 17, 2022.

  1. Nov 17, 2022 #1
    FinkPloyd

    FinkPloyd Light Load Member

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    Sep 2, 2015
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    International paystar 5000s 9 speed deep reduction transmission.
    Trying to upshift say from 6th to 7th itll act like there is a wall in font of the gear. Sometimes if I clutch it just a little bit itll pop in without problems. Other times itll pop in and start grinding. Rpm and road speed is the same.

    Only have this problem with the Paystars, The Macks and s series Internationals with the same transmission shift just fine.
     
    Last edited: Nov 17, 2022
    Reason for edit: Content
    FinkPloyd, Nov 17, 2022
    FinkPloyd, Nov 17, 2022
    #1
    77fib77 Thanks this.
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  3. Nov 17, 2022 #2
    Metalicious

    Metalicious Road Train Member

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    Bad synchronizer in the tail of the transmission?
     
    Metalicious, Nov 17, 2022
    Metalicious, Nov 17, 2022
    #2
  4. Nov 17, 2022 #3
    W923

    W923 Road Train Member

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    Guessing the forks and rails are worn enough that you’re not getting the 6th fork completely back to neutral and that won’t let the 7th fork move because of how things are interlocked (on purpose)
    Try squareing the corner as you come out of sixth and over to the next gate instead of going diagonal.
    But maybe your not naming the gears the same as i am in which case what I said is meaningless.
     
    W923, Nov 17, 2022
    W923, Nov 17, 2022
    #3
    Bean Jr. Thanks this.
  5. Nov 17, 2022 #4
    FinkPloyd

    FinkPloyd Light Load Member

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    Basically just a h pattern 8 speed, left and down is lo/lo lo then 1 through 8.

    So 6th is high range and back and 7th is to the right and up.
     
    FinkPloyd, Nov 17, 2022
    FinkPloyd, Nov 17, 2022
    #4
    W923 Thanks this.
  7. Nov 17, 2022 #5
    77fib77

    77fib77 Road Train Member

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    Shift gate warn out? Aka the top box
     
    77fib77, Nov 17, 2022
    77fib77, Nov 17, 2022
    #5
  8. Nov 17, 2022 #6
    FinkPloyd

    FinkPloyd Light Load Member

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    The shift tower is definatly worn, In neutral can twist the shift lever about 1/4 inch back and fourth. In gear the slop is about 3 inches side to side.
     
    FinkPloyd, Nov 17, 2022
    FinkPloyd, Nov 17, 2022
    #6
  9. Nov 18, 2022 #7
    W923

    W923 Road Train Member

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    We’re on the same page then
    Try coming fully forward to the neutral position before moving over to 7th
     
    W923, Nov 18, 2022
    W923, Nov 18, 2022
    #7
  10. Nov 18, 2022 #8
    AModelCat

    AModelCat Road Train Member

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    Sounds like a sticky shift rail.
     
    AModelCat, Nov 18, 2022
    AModelCat, Nov 18, 2022
    #8
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