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air conditioner

Discussion in 'Peterbilt Forum' started by Turbo55, Aug 18, 2012.

  1. Aug 18, 2012 #1
    Turbo55

    Turbo55 Bobtail Member

    9
    0
    Mar 13, 2012
    0
    my ac wont change to defrost or vents where is the controller for the ducts located? 2006 pete 379
     
    Turbo55, Aug 18, 2012
    Turbo55, Aug 18, 2012
    #1
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  3. Aug 19, 2012 #2
    truckmechanic

    truckmechanic Medium Load Member

    534
    140
    Jan 14, 2012
    Hi Desert Ca
    0
    Take out the center top dash panel the one with all you diff lock and 5th quell lock switches and look strait down on top of the a/c box it is directly on top opt is squarish round with three screws holding it down and asmall square plug on one side pull it off and switch it to see if it is working I hqve also seen a few that the door inside broke off it can be fixed with the dash in place bit a real bear so hopefully its just the actuator you can tie the door to where ever you want it to blow with a ziptie until you get parts
     
    truckmechanic, Aug 19, 2012
    truckmechanic, Aug 19, 2012
    #2
    Turbo55 Thanks this.
  4. Aug 21, 2012 #3
    Turbo55

    Turbo55 Bobtail Member

    9
    0
    Mar 13, 2012
    0
    took off all dash panels, finally found it on the left side, theres a drum inside there with slots in it. a square stem sticking out that goes thru the controller. Cause of the problem? A screw fell into the defrost vent and was jammed against the drum. Along with a lot of other debris. It'll blow your hat off now.
     
    Turbo55, Aug 21, 2012
    Turbo55, Aug 21, 2012
    #3
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