What the heck is going on with my clutch?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by seabring, Sep 19, 2012.

  1. seabring

    seabring Road Train Member

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    Had a strange thing happen with my clutch week before last. Posted about it in the " how to tell if you clutch is going out" thread. I had my usuall shop check it for me. They checked the bell housing for broken pieces and found nothing. They adjusted it to specs, it was only slightly out. They checked the linkages etc, all good. They test drove it and the mechanic said he thought it was operating normally. I still think something is wrong as it will still allow the shifter to get hung up in gear when using the clutch. It works fine at low rpm and low speed but when downshifting on a hill for example at 1300 rpm it will hang up. Could it be the clutch or could it be something else? I am using my normal driving habits and it's operating very different to what it was before the problem. I am not worried about spending the money on a clutch replacement if it's needed but I am wondering if it may not be the clutch but something else causing this? Any ideas?
     
  2. bender

    bender Road Train Member

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    Clutch centerplate hanging up on flywheel drive lugs or clutch discs hanging on input shaft splines causing clutch to not fully release.
     
    Last edited: Sep 19, 2012
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  3. seabring

    seabring Road Train Member

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    How would this be fixed? Is a new clutch required ? I am really quite clueless when it comes to clutches. Also the linkages seem to have what to me seems a lot of play in them. Is that normal, my shop said they were fine, would it be wise to put new linkages and rods in if I change out the clutch? I don't mind spending the money, just want to do the job properly the first time.
     
  4. 55_cans

    55_cans Light Load Member

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    My understanding is that you have to pull the transmission. I'll get you the link that shows how the center plate engages the flywheel lugs. Sticky clutch discs may be from excess grease and dirt seeping in from the release bearing, or the wrong (low temp) grease being used to grease the release bearing. The movement on long linkages can be checked by small springs properly placed, I've even seen bungie cords used.
     
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  5. 55_cans

    55_cans Light Load Member

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    Duplicate post
     
    Last edited: Sep 19, 2012
  6. 55_cans

    55_cans Light Load Member

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  7. Pablo-UA

    Pablo-UA Road Train Member

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    may be just a worn clutch? may be it is time to drop the tranny and pull clutch out?
     
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  8. bender

    bender Road Train Member

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    Yes, a new clutch, resurface flywheel and install new drive lugs in flywheel. Since I am unable to see the linkage I can't make judgement, but if you have doubt get a second opinion from another shop or just go ahead and pre-order the linkage parts for when you schedule the clutch replacement. I would install a new clutch, not a rebuilt.
     
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  9. belltransit

    belltransit Light Load Member

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    i watched the video...and it was mostly installing or removing a clutch...not adjusting it and how much free travel u should have...im sure i need to have mine adjusted cause it starts releasing just past the switch.
     
  10. bender

    bender Road Train Member

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    When you run your clutch adjustment ring in to gain free travel, the release point becomes high on the pedal.