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Eaton Fuller mid range transmission clutch brake

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by carlcassity, Feb 29, 2020.

  1. Feb 29, 2020 #1
    carlcassity

    carlcassity Bobtail Member

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    Feb 29, 2020
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    Hi so I bought a Sterling service truck and after a couple of weeks I found it grinding in first gear. I thought the clutch might need to be adjusted but when I got under it it was missing the clutch brake. My local Napa only caries one type of clutch brake but when I went to install it it was to big. I also cant feel any grooves on the input shaft. Im wondering if my Eaton Fuller 6 speed transmission even has a clutch brake? If it doesnt how do I get my trans to quit grinding in first gear?
     
    carlcassity, Feb 29, 2020
    carlcassity, Feb 29, 2020
    #1
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  3. Feb 29, 2020 #2
    pushbroom

    pushbroom Road Train Member

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    It will not have a clutch brake. Should be a syncro trans, syncros match gear speed to let it go into gear. I think proper clutch adjustment is 3/4 inch from pressure plate to the release bearing? Ill see if I can find the manual on it.

    Edit: Manual attached. If its a 2 disk clutch its 3/4 of an inch.
     

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    pushbroom, Feb 29, 2020
    pushbroom, Feb 29, 2020
    #2
    BoxCarKidd, Goodysnap, spsauerland and 1 other person Thank this.
  4. Feb 29, 2020 #3
    Chubby Fly

    Chubby Fly Medium Load Member

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    Like pushbroom said, eaton 6 is not a big truck trans. That is a syncro trans. IT does not have a clutch brake and is not supposed o be double clutched or gears floated. Is to be driven like a stic shift pickup truck or passenger vehicle. Those synchro 6 trans are junk and always fail which is your issue. The synchros are shot. The previous owner drove it like a semi truck and ultimately messed it up. You can continue driving it that way or drop the trns and replace it. ILl bet that sterling yo have also has a small 7 liter cat in it.
     
    Chubby Fly, Feb 29, 2020
    Chubby Fly, Feb 29, 2020
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    Bean Jr. Thanks this.
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