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Old style 13 speed shift knob for an 18 speed?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Mar 10, 2023.

Page 2 of 2
  1. Mar 12, 2023 #11
    Bean Jr.

    Bean Jr. Road Train Member

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    I have a 14613. It had the "newer" style knob with the interlock. Now I don't have the shift knob interlock, but I guess there is one in the transmission. It is in the right split even if the button is OD.
     
    Bean Jr., Mar 12, 2023
    Bean Jr., Mar 12, 2023
    #11
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  3. Mar 12, 2023 #12
    Hammer166

    Hammer166 Crusty Information Officer

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    IIRC, everything after the 125xx have the interlock logic on the tranny.
     
    Hammer166, Mar 12, 2023
    Hammer166, Mar 12, 2023
    #12
    Bean Jr. Thanks this.
  4. Mar 13, 2023 #13
    SmallPackage

    SmallPackage Road Train Member

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    My ‘72 White that never left the TXI concrete quarry was like that. It never went above 10 mph. 4.88 rears. After the mechanics figured out why the drivers kept blowing out the driveline they disconnected and capped off the air lines so high range could never be used and they could split the low range.
     
    SmallPackage, Mar 13, 2023
    SmallPackage, Mar 13, 2023
    #13
    Jubal Early Times, Bean Jr. and mile marker 27 Thank this.
  5. Mar 21, 2023 #14
    Jubal Early Times

    Jubal Early Times Road Train Member

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    DF27612D-F8DD-4038-8270-AD87386274B8.jpeg
     
    Jubal Early Times, Mar 21, 2023
    Jubal Early Times, Mar 21, 2023
    #14
    RockinChair, Bean Jr. and mile marker 27 Thank this.
  7. Mar 21, 2023 #15
    Jubal Early Times

    Jubal Early Times Road Train Member

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    I just added a high low valve. I had to split the red supply line and run one to the knob and one to the valve.
     
    Jubal Early Times, Mar 21, 2023
    Jubal Early Times, Mar 21, 2023
    #15
  8. Mar 21, 2023 #16
    mile marker 27

    mile marker 27 Road Train Member

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    That’s the way I’d like to set up my 15 O.D. . I’m guessing it’d work? Range on the side of the knob and deep reduction is the add on button? Of coarse my knob would have to be for a 10 speed and they do make them. Looks like you got a 13.
     
    mile marker 27, Mar 21, 2023
    mile marker 27, Mar 21, 2023
    #16
    Jubal Early Times Thanks this.
  9. Mar 21, 2023 #17
    Jubal Early Times

    Jubal Early Times Road Train Member

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    It’s an 18. Range is the up down and splitter is the side.
     
    Jubal Early Times, Mar 21, 2023
    Jubal Early Times, Mar 21, 2023
    #17
    Bean Jr. and mile marker 27 Thank this.
  10. Mar 21, 2023 #18
    mile marker 27

    mile marker 27 Road Train Member

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    Gotcha. The original shifter(9 speed) labeling just isn’t as you’re using it. Button on the side was originally the range but now you’re using to split. So, back to my original post. It can be done but not with an old style 13 speed knob. Has to be an old 9, with add on button. Thanks, man.
     
    mile marker 27, Mar 21, 2023
    mile marker 27, Mar 21, 2023
    #18
    Jubal Early Times Thanks this.
  11. Mar 21, 2023 #19
    mile marker 27

    mile marker 27 Road Train Member

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    I’m gonna get around and do my 15 like that. Get an old style 10 knob, use the side for either deep reduction and an add on button for range. Guess I could do it vice versa, as well.
     
    mile marker 27, Mar 21, 2023
    mile marker 27, Mar 21, 2023
    #19
    Jubal Early Times Thanks this.
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