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Worn shift tower?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Lazer, Nov 6, 2020.

  1. Nov 6, 2020 #1
    Lazer

    Lazer Road Train Member

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    2003 Freightliner Columbia, w/ MB engine, Eaton Roadranger 6-10. Gear position 4/9 does not go in gear. I can feel the gear there, but shifter will not stay in.
    How do I test to determine if it is a worn shifter or an actual gear problem?
    All other gear positions work perfectly.
     
    Lazer, Nov 6, 2020
    Lazer, Nov 6, 2020
    #1
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  3. Nov 6, 2020 #2
    wore out

    wore out Numbered Classic

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    You can almost bet it's in the transmission. Riding down the road in 10th with your hand on the shifter creates wear on the 4/9 side of the shift collar. Eventually it gets enough wear it can no longer engage all the way. Not saying you do that but its obvious some one has
     
    wore out, Nov 6, 2020
    wore out, Nov 6, 2020
    #2
    Diesel Dave, Goodysnap and AModelCat Thank this.
  4. Nov 6, 2020 #3
    Lazer

    Lazer Road Train Member

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    That possible, this is a company truck, I have been here just over 2 months, everyone that is here says this truck has been this way for awhile.
     
    Lazer, Nov 6, 2020
    Lazer, Nov 6, 2020
    #3
  5. Nov 6, 2020 #4
    Hulld

    Hulld Road Train Member

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    I have seen this problem on Columbia’s before.
    The ones that I have seen with this problem have a piece coming off the stem of the shifter coming out of the shift tower and then the shifter bolts to that.
    This piece is A tapered fit held with a bolt.
    Sometimes this piece moves and doesn’t allow the shifter to fully engage the gear before the shifter contacts the floor board under the rubber boot.
     
    Hulld, Nov 6, 2020
    Hulld, Nov 6, 2020
    #4
  7. Nov 6, 2020 #5
    little cat 500

    little cat 500 Road Train Member

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    more than likely the sliding gear is wore out or shift fork may be bent
     
    little cat 500, Nov 6, 2020
    little cat 500, Nov 6, 2020
    #5
  8. Nov 6, 2020 #6
    Hulld

    Hulld Road Train Member

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    048BBC80-14D8-4E3E-B21A-409809B9B8FF.jpeg
    here’s a picture of a Columbia set up to help you understand what I am talking about.
    Columbia’s don’t have the shifter bolted directly to the stub shaft coming out of the shift tower like most trucks do.
     
    Hulld, Nov 6, 2020
    Hulld, Nov 6, 2020
    #6
  9. Nov 12, 2020 #7
    Lazer

    Lazer Road Train Member

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    Had a chance to take a closer look today, the shifter in this Columbia is not a straight stick as in the pic.
    This one has a ‘dog leg’ design, towards the driver. Huge boot, after it drops under the floor the shifter is curved forward toward the shift tower, then bolted on a ‘sleeve’, then that sleeve bolts to the shift tower. No slop, plenty of room, shifter never comes close to bumping opening in floor, or dash. Problem must be internal, o well.
     
    Lazer, Nov 12, 2020
    Lazer, Nov 12, 2020
    #7
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