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Eaton 10 speed manual problem

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mladen86, Dec 23, 2017.

Page 1 of 2
  1. Dec 23, 2017 #1
    mladen86

    mladen86 Medium Load Member

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    Aug 23, 2012
    Chicago,il
    0
    Ok,so I don’t have 5th and 10th gear anymore.
    Earlier today i noticed some noise and slight vibration coming from underneath the truck while cruising at 65mph.
    Then,when traffic came to a stop a noticed that shifting through the gears isn’t smooth,there was noise and grinding between each gear.
    I stoped at rest area and noticed that there is noise coming from underneath the truck,I guess from transmission even when truck is in neutral and idling and the noise stops when i press the clutch.
    Another weird thing happening while idling is that speedometer needle is going up and down erratically.
    Oil level is good.
    I continued driving and after some time everything became smooth again,like nothing is wrong.
    Then after maybe two hours noise came back even louder and i lost 5th and 10th gear.
    Anyone knows what could be a problem?
     
    mladen86, Dec 23, 2017
    mladen86, Dec 23, 2017
    #1
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  3. Dec 23, 2017 #2
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Overhaul or replace. Hope you are home.
     
    BoxCarKidd, Dec 23, 2017
    BoxCarKidd, Dec 23, 2017
    #2
  4. Dec 23, 2017 #3
    mladen86

    mladen86 Medium Load Member

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    Aug 23, 2012
    Chicago,il
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    Nope,1000 miles away.
     
    mladen86, Dec 23, 2017
    mladen86, Dec 23, 2017
    #3
  5. Dec 24, 2017 #4
    Jet A Fuel

    Jet A Fuel Bobtail Member

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    Dec 24, 2017
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    If your near Atlanta Southern Gear and Transmission are great folks and have alot of RR Eaton parts in stock.
     
    Jet A Fuel, Dec 24, 2017
    Jet A Fuel, Dec 24, 2017
    #4
  7. Dec 25, 2017 #5
    mladen86

    mladen86 Medium Load Member

    303
    269
    Aug 23, 2012
    Chicago,il
    0
    Well made it to the yard.
    970 miles at 50mph in 9th gear.
    What a torture.
    Will update after the holidays,shop is closed until 3rd.
     
    mladen86, Dec 25, 2017
    mladen86, Dec 25, 2017
    #5
    Jet A Fuel, SAR, Oldironfan and 2 others Thank this.
  8. Dec 25, 2017 #6
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Glad you made it home and hope you enjoy the week off. Guessing the rear main shaft bearing went out.
     
    BoxCarKidd, Dec 25, 2017
    BoxCarKidd, Dec 25, 2017
    #6
    mladen86 Thanks this.
  9. Dec 25, 2017 #7
    Oldironfan

    Oldironfan Road Train Member

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    May 22, 2017
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    You need a new gear in the trans. Or a fork. Trans is easy to do at least when watching it on YouTube.
     
    Oldironfan, Dec 25, 2017
    Oldironfan, Dec 25, 2017
    #7
    mladen86 and BoxCarKidd Thank this.
  10. Dec 25, 2017 #8
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Driving a truck is like that on You Tube also when you look at the posts of talented drivers. It is so easy anyone can do that. Believe that? Dave in Az has some beach property for sale.
    All meant in good fun. That transmission is probably a basket case now. Still probably less expensive than emergency Christmas day service. He would probably still be there and dumped a lot of cash. Glad he made it home for Christmas. Better late than never.
     
    BoxCarKidd, Dec 25, 2017
    BoxCarKidd, Dec 25, 2017
    #8
    mladen86 Thanks this.
  11. Dec 27, 2017 #9
    jake744

    jake744 Light Load Member

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    Dec 27, 2017
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    5th and 10th would be front gear in the main box. Could have stripped the teeth off. Seen it happen lots of times.
     
    jake744, Dec 27, 2017
    jake744, Dec 27, 2017
    #9
    mladen86 Thanks this.
  12. Dec 27, 2017 #10
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Jake: Welcome aboard! Just some open discussion on this problem.
    I also have seen that lots of times but would that cause shifting problems in other gears?
    We do not know if this is a direct or overdrive transmissions which affects the diagnosis.
     
    BoxCarKidd, Dec 27, 2017
    BoxCarKidd, Dec 27, 2017
    #10
    mladen86 Thanks this.
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