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Clutch or transmission issue?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by superhill56, Apr 22, 2020.

Page 3 of 5
  1. Apr 22, 2020 #21
    AModelCat

    AModelCat Road Train Member

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    Vibrations and noises are hard to pinpoint. Even stuff like wrong driveline angles can transmit vibrations to the transmission. Heck one time I had a buddy's father-in-law ask me to help diagnose a transmission issue and I ended up finding it was a crankshaft bearing issue.
     
    AModelCat, Apr 22, 2020
    AModelCat, Apr 22, 2020
    #21
    650cat425 Thanks this.
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  3. Apr 22, 2020 #22
    superhill56

    superhill56 Light Load Member

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    Wow! I did that last month. Replaced a turbo and ended up being exhaust manifold gaskets.
     
    superhill56, Apr 22, 2020
    superhill56, Apr 22, 2020
    #22
  4. Apr 22, 2020 #23
    superhill56

    superhill56 Light Load Member

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    I hope this ain’t something I keep having to throw money at.
     
    superhill56, Apr 22, 2020
    superhill56, Apr 22, 2020
    #23
  5. Apr 22, 2020 #24
    superhill56

    superhill56 Light Load Member

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    Update. It doesn’t make the noise in 4th either
     
    superhill56, Apr 22, 2020
    superhill56, Apr 22, 2020
    #24
  7. Apr 22, 2020 #25
    Rideandrepair

    Rideandrepair Road Train Member

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    I would rule out loose/ worn linkage, and watch for broken springs, laying inside the inspection cover. And keep running it.
     
    Rideandrepair, Apr 22, 2020
    Rideandrepair, Apr 22, 2020
    #25
    650cat425 Thanks this.
  8. Apr 22, 2020 #26
    superhill56

    superhill56 Light Load Member

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    Was transmission. I just lost all my gears except 4 and 9
     
    superhill56, Apr 22, 2020
    superhill56, Apr 22, 2020
    #26
    650cat425 Thanks this.
  9. Apr 22, 2020 #27
    superhill56

    superhill56 Light Load Member

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    I was trying to make it home
     
    superhill56, Apr 22, 2020
    superhill56, Apr 22, 2020
    #27
    650cat425 Thanks this.
  10. Apr 22, 2020 #28
    650cat425

    650cat425 Road Train Member

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    That certainly sucks. I'm sorry to hear of such bad fortune. I hope you update the thread after you find out what exactly happened!
     
    650cat425, Apr 22, 2020
    650cat425, Apr 22, 2020
    #28
    superhill56 Thanks this.
  11. Apr 22, 2020 #29
    superhill56

    superhill56 Light Load Member

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    I certainly will and I appreciate all your help. Helped me troubleshoot the issue tremendously! Just didn’t hold up long enough to make it home.
     
    superhill56, Apr 22, 2020
    superhill56, Apr 22, 2020
    #29
    650cat425 Thanks this.
  12. Apr 22, 2020 #30
    AModelCat

    AModelCat Road Train Member

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    Call it a hunch, but I'm guessing you broke the input drive gear (the gear the input shaft splines in to). That would explain 4th/9th only since those are the only gear positions the main box doesn't transmit power to the countershafts.
     
    AModelCat, Apr 22, 2020
    AModelCat, Apr 22, 2020
    #30
    jamespmack, superhill56 and 650cat425 Thank this.
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