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Eaton fuller 10 speed grinding when switched to low

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by RV transporter, Mar 26, 2018.

Page 1 of 2
  1. Mar 26, 2018 #1
    RV transporter

    RV transporter Light Load Member

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    Dec 23, 2017
    Kentucky
    0
    I bought a 2000 Volvo today 12.7 with 10 speed . The transmission shifts up fine . When downshifting the gears all engage as they should but when I push the selector down in 6th gear it starts grinding as soon as the shifter gets in neutral. I have to flip it back to high to stop the grinding. From a stop it goes into low fine . I am a rookie but had a seasoned driver drive it , his overall shifts were nicer and could sometimes get it into low but with some grinding . I am thinking the low syncro. is wore out . I would like to get a conformation on that . Can that be changed without pulling the transmission?
     
    RV transporter, Mar 26, 2018
    RV transporter, Mar 26, 2018
    #1
    Another Canadian driver Thanks this.
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  3. Mar 26, 2018 #2
    ClineER

    ClineER Light Load Member

    229
    139
    Apr 27, 2016
    N.E. Oklahoma
    0
    Sounds like the synchro. You can remove the rear section without pulling the trans. You have to pull counter shaft covers and brace the counter shafts to reinstall the aux section of the trans
     
    ClineER, Mar 26, 2018
    ClineER, Mar 26, 2018
    #2
    Another Canadian driver and RV transporter Thank this.
  4. Mar 26, 2018 #3
    fatmike02

    fatmike02 Light Load Member

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    Mar 1, 2018
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    Excuse me for my ignorance becuase I’m not that mechanically inclined with the trans but isn’t there something on the trans that supplies airflow to the range selector that fails and sometimes limits air creating this problem. Cheap and easy fix?
     
    fatmike02, Mar 26, 2018
    fatmike02, Mar 26, 2018
    #3
    Another Canadian driver and BoxCarKidd Thank this.
  5. Mar 26, 2018 #4
    RV transporter

    RV transporter Light Load Member

    56
    46
    Dec 23, 2017
    Kentucky
    0
    I hope so . Like I said I have to come to a stop in 6th then flip down to get back in low smooth
     
    RV transporter, Mar 26, 2018
    RV transporter, Mar 26, 2018
    #4
    Another Canadian driver Thanks this.
  7. Mar 26, 2018 #5
    RV transporter

    RV transporter Light Load Member

    56
    46
    Dec 23, 2017
    Kentucky
    0
    The experienced driver even tried the range selector at very low speeds in a parking lot . Up went fine always a grind then flipped down almost always had to change back to high to stop the grinding
     
    RV transporter, Mar 26, 2018
    RV transporter, Mar 26, 2018
    #5
    Another Canadian driver Thanks this.
  8. Mar 26, 2018 #6
    ClineER

    ClineER Light Load Member

    229
    139
    Apr 27, 2016
    N.E. Oklahoma
    0
    You can disconnect low air line and connect to pressure gauge to double check pressure. That would show for sure if synchro or air
     
    ClineER, Mar 26, 2018
    ClineER, Mar 26, 2018
    #6
    Another Canadian driver Thanks this.
  9. Mar 26, 2018 #7
    BoxCarKidd

    BoxCarKidd Road Train Member

    4,528
    6,587
    Aug 26, 2014
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    Probably. Need the model number for anyone to answer R&R back box without removing the top plate first. Tag should be on the right rear of the transmission. Some thing like FRO15210C.
     
    BoxCarKidd, Mar 26, 2018
    BoxCarKidd, Mar 26, 2018
    #7
    Another Canadian driver Thanks this.
  10. Mar 26, 2018 #8
    RV transporter

    RV transporter Light Load Member

    56
    46
    Dec 23, 2017
    Kentucky
    0
    IMG_2837.JPG IMG_2835.JPG
    I couldn't find a model tag , I found 2 rebuilder tags . The part on the top right on the back is loose , the bolts are backed out a little. It looks like it has a cable that screws on it.
     
    RV transporter, Mar 26, 2018
    RV transporter, Mar 26, 2018
    #8
    Another Canadian driver Thanks this.
  11. Mar 26, 2018 #9
    diesel drinker

    diesel drinker Road Train Member

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    Apr 10, 2015
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    I had that problem in an older Volvo! It was (as I was told ) power divider.It finally fell apart and I had to do 700 miles with locked differential.
     
    diesel drinker, Mar 26, 2018
    diesel drinker, Mar 26, 2018
    #9
    Another Canadian driver Thanks this.
  12. Mar 26, 2018 #10
    fatmike02

    fatmike02 Light Load Member

    127
    159
    Mar 1, 2018
    0
    How in the hell did your power divider have anything to do with your range selector not shifting smoothbin your trans? Or did I have too many vodkas tonight and not reading you right?
     
    fatmike02, Mar 26, 2018
    fatmike02, Mar 26, 2018
    #10
    Another Canadian driver and Hulld Thank this.
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