ISX 450 fan clutch

Discussion in 'Trucks [ Eighteen Wheelers ]' started by ejm, Dec 30, 2010.

  1. Dec 30, 2010 #1
    ejm

    ejm Bobtail Member

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    If I understand correctly, the fan clutch releases with air applied? My fan never stops and I don't find a air leak. Any ideas or do I have the wrong concept?
     
    ejm, Dec 30, 2010
    ejm, Dec 30, 2010
    #1
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  3. Dec 31, 2010 #2
    heavyhaulerss

    heavyhaulerss Road Train Member

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    could be the selenoid switch or a blown fan fuse.
     
    heavyhaulerss, Dec 31, 2010
    heavyhaulerss, Dec 31, 2010
    #2
  4. Dec 31, 2010 #3
    Smalltruck

    Smalltruck Light Load Member

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    Elko, MN
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    Some use air to release and others use air to lock. Some also have the ability to be locked on by screwing bolts into them. Cummins uses the ECM to ground out the fan clutch to make it work. A short in that part of the ECM will also cause it to stay on. First thiing is to put ait to the fan hub an see if it unlocks. If it does then the problem is elsewhere.
     
    Smalltruck, Dec 31, 2010
    Smalltruck, Dec 31, 2010
    #3
  5. Jan 1, 2011 #4
    ejm

    ejm Bobtail Member

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    Thanks guys, gives me a good start.
     
    ejm, Jan 1, 2011
    ejm, Jan 1, 2011
    #4
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