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Belt sqeeling..or is it?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by me myself and I, Jul 12, 2012.

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  1. Jul 12, 2012 #1
    me myself and I

    me myself and I Heavy Load Member

    735
    312
    Oct 5, 2009
    vernon hills,Il
    0
    Seems so easy. My belt sqeels when I step on gas. Not every time but more and more. I've removed A/C belt, still sqeels. Both other belt and tensioner are about 1 year old. Tensioner was moving some so I've got a new one. No change. Got some of that belt dressing thing, sprayed it seemed to do some good so I've replaced belt but it didnt do any good. Alternator is new and Its spining fine. It also runs water pump and radiator fan. I dont know how to check those. Or is it something different that just sounds like a spinning belt? It on Volvo with ISX. Any suggestions?
     
    me myself and I, Jul 12, 2012
    me myself and I, Jul 12, 2012
    #1
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  3. Jul 12, 2012 #2
    bender

    bender Road Train Member

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    Jul 20, 2010
    Don't Kid Yourself
    0
    Sounds like your alternator could be hard charging often. Bad batteries can cause this as well as alternator failure. I see you have replaced the alternator. Have you had the batteries checked? Constant hard charging of the alternator to maintain the charge in bad batteries will overheat the alternator and cause belt squeal from the heavy load and the small pulley. The use of belt dressing will ruin a good belt and actually contribute to squealing.
     
    bender, Jul 12, 2012
    bender, Jul 12, 2012
    #2
  4. Jul 12, 2012 #3
    me myself and I

    me myself and I Heavy Load Member

    735
    312
    Oct 5, 2009
    vernon hills,Il
    0
    Batteries were tested when I had alternator replaced. One thing about alternator. It always show 14.2-14.3 V .
     
    me myself and I, Jul 12, 2012
    me myself and I, Jul 12, 2012
    #3
  5. Jul 12, 2012 #4
    bender

    bender Road Train Member

    2,105
    1,360
    Jul 20, 2010
    Don't Kid Yourself
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    14.2 V is perfect. Do you run your batteries low when you take your ten?
     
    bender, Jul 12, 2012
    bender, Jul 12, 2012
    #4
  7. Jul 12, 2012 #5
    heavyhaulerss

    heavyhaulerss Road Train Member

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    Dec 23, 2009
    AL/TN BORDER
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    if the alternator belt is not tight enough, it will sqeel
     
    heavyhaulerss, Jul 12, 2012
    heavyhaulerss, Jul 12, 2012
    #5
  8. Jul 12, 2012 #6
    112racing

    112racing Road Train Member

    1,384
    20,548
    Nov 30, 2008
    pocono's, pa
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    if it has a spring loaded idler pulley it could be worn out ....they are a wear item and periodically need replacement to hold the proper belt tension
     
    112racing, Jul 12, 2012
    112racing, Jul 12, 2012
    #6
  9. Jul 12, 2012 #7
    DL550CAT

    DL550CAT Road Train Member

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    Oct 18, 2009
    Waynesburg, Pa
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    When you step on the "gas" pedal. Are you sure its a belt? If it does it all the time it could be a boost leak or an exhaust leak ahead of the turbo. They can also sound like a belt squeal.
     
    DL550CAT, Jul 12, 2012
    DL550CAT, Jul 12, 2012
    #7
    Heavyd Thanks this.
  10. Jul 14, 2012 #8
    ladaviscpa

    ladaviscpa Bobtail Member

    4
    0
    Jul 3, 2012
    0
    check manifold bolts cummins has problems with them breaking sounds just like belts squeeling
     
    ladaviscpa, Jul 14, 2012
    ladaviscpa, Jul 14, 2012
    #8
  11. Jul 14, 2012 #9
    me myself and I

    me myself and I Heavy Load Member

    735
    312
    Oct 5, 2009
    vernon hills,Il
    0
    Well upon further inspection I've found 9/16 socket sitting on that block pan connection kinda leaning on balancer. Two day battle to remove it from there was won but not without the cost ( burns, scraches ). We'll see tomorrow if it 'll cure it. But the fact that it was doing it only when I step on the "gas" leaves me with uneasy filling. And no it wouldnt do it every time.
     
    me myself and I, Jul 14, 2012
    me myself and I, Jul 14, 2012
    #9
  12. Jul 15, 2012 #10
    w900

    w900 Light Load Member

    83
    27
    Mar 25, 2009
    Carlisle,Pa
    0
    Maybe check wheel in turbo just to make sure it's not starting to rub
     
    w900, Jul 15, 2012
    w900, Jul 15, 2012
    #10
    aiwiron Thanks this.
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