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Air conditioner does not engage

I put over 4 pounds of freon in the air conditioner of a 2006 International 7600 dump truck - still does not work. The clutch can be turned manually so it's not frozen but it does not engage when unit is turned on.

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  • iraleee May 22, 2009

    Do i need to evacuate the system of refrigerant before i can change this switch? The motor is a Caterpillar ACERT system.

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Hi iraleee any updates for this concern, because we've got a solution for you, please reply.

Posted on Sep 23, 2009

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You probably have a bad low pressure cutout switch.

Posted on May 14, 2009

  • Dan Webster
    Dan Webster May 22, 2009

    I believe you will loose what is in there if you don't evacuate the freon.
    The ideal thing would be to connectit to a machine and remove the gas. Then replace the switch and vacuum the system. Then install the
    Correct charge there by weight. It should give the correct amount somewhere on the machine.


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