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freightliner question

Discussion in 'Freightliner Forum' started by biggun, Mar 26, 2014.

  1. Mar 26, 2014 #1
    biggun

    biggun Bobtail Member

    36
    5
    Jan 24, 2014
    broomfield, co
    0
    Here is a dumb question. Just drove a century and it has inter Adel lock switch, fifth wheel slide switch and then one that says trailer hold use only for trailer disconnect. I have not seen that one before. Anybody have any clues or experience with this. Thanks.
     
    biggun, Mar 26, 2014
    biggun, Mar 26, 2014
    #1
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  3. Mar 26, 2014 #2
    Cowpie1

    Cowpie1 Road Train Member

    5,569
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    Nov 25, 2008
    Kellogg, IA
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    Was that a electric actuated king pin release switch? Sure sounds like one from what you described.
     
    Cowpie1, Mar 26, 2014
    Cowpie1, Mar 26, 2014
    #2
  4. Mar 26, 2014 #3
    Helowrenchturn2

    Helowrenchturn2 Medium Load Member

    484
    139
    Apr 23, 2013
    0
    Trl hold switch has to be held in the on position, it won't stay on by itself. This is used when you are trying to slide your tandems and the trl brakes won't hold. You flip this switch and it sends additional air pressure to trl in an attempt to keep wheels from moving
     
    Helowrenchturn2, Mar 26, 2014
    Helowrenchturn2, Mar 26, 2014
    #3
    Adamprov3nch3r Thanks this.
  5. Mar 27, 2014 #4
    biggun

    biggun Bobtail Member

    36
    5
    Jan 24, 2014
    broomfield, co
    0
    Like a Johnson bar then
     
    biggun, Mar 27, 2014
    biggun, Mar 27, 2014
    #4
  7. Mar 27, 2014 #5
    Helowrenchturn2

    Helowrenchturn2 Medium Load Member

    484
    139
    Apr 23, 2013
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    Same principle but this on sends one steady amount of air whereas a Johnny bar can be variable
     
    Helowrenchturn2, Mar 27, 2014
    Helowrenchturn2, Mar 27, 2014
    #5
  8. Mar 27, 2014 #6
    Cowpie1

    Cowpie1 Road Train Member

    5,569
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    Nov 25, 2008
    Kellogg, IA
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    Well, that makes sense.
     
    Cowpie1, Mar 27, 2014
    Cowpie1, Mar 27, 2014
    #6
  9. Mar 27, 2014 #7
    biggun

    biggun Bobtail Member

    36
    5
    Jan 24, 2014
    broomfield, co
    0
    So why does it say for trailer disconnect
     
    biggun, Mar 27, 2014
    biggun, Mar 27, 2014
    #7
  10. Mar 28, 2014 #8
    bender

    bender Road Train Member

    2,105
    1,348
    Jul 20, 2010
    Don't Kid Yourself
    0
    The trailer disconnect control operates an air cylinder under the 5th wheel to allow you to unlock or release the 5th wheel jaws from the drivers seat, after getting out before hand, dollying down and disconnecting air lines and trailer cord.
     
    bender, Mar 28, 2014
    bender, Mar 28, 2014
    #8
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