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air control switch122sd

Discussion in 'Freightliner Forum' started by XLR8, Feb 18, 2018.

  1. Feb 18, 2018 #1
    XLR8

    XLR8 Bobtail Member

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    Feb 17, 2018
    0
    hi what’s the “air control” on / off switch under the differential switches on 122sd dash, there’s not 1 mention of it in the owners manual
     
    XLR8, Feb 18, 2018
    XLR8, Feb 18, 2018
    #1
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  3. Feb 24, 2018 #2
    Working2party

    Working2party Medium Load Member

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    Feb 10, 2018
    Kansas
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    The 122sd’s work on (16 of them) have those switches marked really well, diff lock, axle lock, suspension dump, even the PTO switch says PTO. It may be just an optional switch they put in at the factory in case your truck was ever up fitted with something.
     
    Working2party, Feb 24, 2018
    Working2party, Feb 24, 2018
    #2
    XLR8 Thanks this.
  4. Feb 25, 2018 #3
    XLR8

    XLR8 Bobtail Member

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    Feb 17, 2018
    0
    Thank you ,it is a dump truck so it would make sense to have a switch for the 5 wheel that is not there.
     
    XLR8, Feb 25, 2018
    XLR8, Feb 25, 2018
    #3
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