Clutch or transmission issue?

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

  1. 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.
     
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  3. 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.
     
  4. superhill56

    superhill56 Light Load Member

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    I hope this ain’t something I keep having to throw money at.
     
  5. superhill56

    superhill56 Light Load Member

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    Update. It doesn’t make the noise in 4th either
     
  6. 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.
     
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  7. superhill56

    superhill56 Light Load Member

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    Was transmission. I just lost all my gears except 4 and 9
     
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  8. superhill56

    superhill56 Light Load Member

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    I was trying to make it home
     
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  9. 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!
     
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  10. 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.
     
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  11. 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.
     
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