Air auxiliary shift for a 15 speed

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Aug 17, 2022.

  1. mile marker 27

    mile marker 27 Medium Load Member

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    I’ve got a friend who wanting to do some trading. He’s got one of those air auxiliary shift kits from 4 States, for a 13 speed and he suggested that it might work for a 15. Well, sounds and seems like it would but their not advertised for a 15, just 13 and 18. He’s never had it on a truck, so I know it’s good. The air auxiliary splits the top range on the 13 but I was wondering if it could be used for the deep reduction(blue switch) on the 15? I call them fake twin sticks and have never really cared for the concept but he doesn’t want much for trade.
     
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  3. PSM379

    PSM379 Medium Load Member

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    Here’s my opinion, and it’s doesn’t mean much. If you have 2 sticks coming up out of the floor board there better be 2 transmissions hanging under it.
     
  4. kranky1

    kranky1 Road Train Member

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    Well except the Mack Tris and Quads. They’re a kind of special situation. Shifted nice though.
     
  5. BoxCarKidd

    BoxCarKidd Road Train Member

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    NO.
     
    mile marker 27 Thanks this.
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