Clutch or transmission issue?

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

  1. superhill56

    superhill56 Light Load Member

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    I have an 06 ISX with a 10 speed Eaton Fuller. Yesterday my clutch started rattling as it was spinning. Almost like it’s rubbing something. It does it in every gear but 9th and you can hear it slightly at idle. No doubt it’s the clutch making the noise but the fact it’s smooth in 9th has me confused. I’m all ears guys. Thanks in advance for yalls help!
     
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  3. AModelCat

    AModelCat Road Train Member

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  4. superhill56

    superhill56 Light Load Member

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    I’m not sure I posted image of the door jamb
     

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  5. AModelCat

    AModelCat Road Train Member

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    FRO I think is an overdrive transmission, making 9th gear direct. Does it do it in 4th as well?
     
  6. superhill56

    superhill56 Light Load Member

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    Yes it makes the noise in 4th too
     
  7. superhill56

    superhill56 Light Load Member

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    And the clutch is still operating as it should as well as shifting smoothly through all gears. Just making the rattling noise as the clutch spins
     
  8. 650cat425

    650cat425 Road Train Member

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    I'm probably stating the obvious, but how long has it been since the throw out bearing was greased?
     
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  9. superhill56

    superhill56 Light Load Member

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    yes sir. It was back in February when I had it PM’d. It almost seems as if it could be shifting back and forth. When I’m going down a hill you don’t hear it.
     
  10. 650cat425

    650cat425 Road Train Member

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    Well, I'm not sure why you're going two months between grease jobs, but I'd try greasing it and making sure you do the throw out bearing well before you do anything else. That'll be the cheapest and easiest place to start troubleshooting.
     
  11. AModelCat

    AModelCat Road Train Member

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    I'm leaning towards internal transmission issue. 9th is direct, no torque is being put through any of the countershafts in direct. However without being there to listen I can't say for sure.
     
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