Slipping clutch ???? ????

Discussion in 'Peterbilt Forum' started by LittleMissCabover, Dec 26, 2013.

  1. LittleMissCabover

    LittleMissCabover Light Load Member

    125
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    Sep 6, 2011
    kansas
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    Hi All ! I've got something going on that I need help with. I'm not sure what it is, but I'm guessing it's the clutch. Empty or loaded, when taking off it feels like it's not in gear.
    If I give it more accelerator it helps. Sometimes I have to engage the differential lock to move. This doesn't happen all the time, but maybe 75%. Please help !
     
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  3. baha

    baha Road Train Member

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    air sup. might be over/extended when it happens get out and look at air bags, also is any free play at top of clutch.
     
  4. wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    If locking the power divider in helps I don't think it's clutch. Usually when a clutch slips if you let of the throttle and feather back into it it helps. Just hitting the throttle makes it slip worse. Any noises or strange smells like something burning
     
    LittleMissCabover Thanks this.
  5. LittleMissCabover

    LittleMissCabover Light Load Member

    125
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    Sep 6, 2011
    kansas
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    thanks baha ! you'll need to school me, because I don't get the air suspension being over extended part. and yes, I seem to have normal free play of the clutch pedal.
     
  6. travis wal

    travis wal Bobtail Member

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    Aug 29, 2012
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    check the rear ends ,you might have a bad one

    good luck on this
     
  7. baha

    baha Road Train Member

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    if your sup. valve is acting bad it can let wheel spin when you flip power div. truck will move,best to have it CK. at real shop before it gets bad?
     
  8. LittleMissCabover

    LittleMissCabover Light Load Member

    125
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    Sep 6, 2011
    kansas
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    baha; thank you, thank you, thank you !!!! !!!! I THINK THAT YOU MIGHT BE RIGHT ! when I went to start the truck this morning, I thought that there was a huge gap between the tires and the trailer. I just thought ---- "well that's weird". YOU ARE A GENIUS !!!! !!!!
     
    baha Thanks this.
  9. tator1960

    tator1960 Light Load Member

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    Dec 29, 2013
    0
    If your leveling valve is acting bad it's probably shocks. Look for oil leaks around shock absorbers.
     
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