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Broken Fan

Discussion in 'Kenworth Forum' started by johnwilson_osf, Jun 13, 2013.

  1. Jun 13, 2013 #1
    johnwilson_osf

    johnwilson_osf Bobtail Member

    12
    0
    May 16, 2013
    Mount Bethel, PA
    0
    Was pulling a hill yesterday, and the Electric Clutch of the fan kicked on to cool the engine down. All of a sudden, there was a huge bang, and the engine seemed to lose power for a second. Come to find that the rubber shroud material around the radiator ripped, and got sucked into the fan, and broke a blade off, and chipped two others.

    Has anyone ever replaced a fan before? This is on a T300, with a 3126 Cat engine. Am I looking at 4 bolts, 1 large bolt? etc

    Thank you,
    John
     
    johnwilson_osf, Jun 13, 2013
    johnwilson_osf, Jun 13, 2013
    #1
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  3. Jun 13, 2013 #2
    snowwy

    snowwy Road Train Member

    20,543
    13,278
    Jul 6, 2009
    0
    don't think it's big bolts. but i'd be looking as to WHY the fan hit the shroud.

    worn or broken motor mounts. crack in the frame. something is letting the motor move around a little enough for the fan to hit.

    seen it happen on dump trucks quite often. but those things take a lot of abuse in the flexing department.
     
    snowwy, Jun 13, 2013
    snowwy, Jun 13, 2013
    #2
  4. Jun 13, 2013 #3
    johnwilson_osf

    johnwilson_osf Bobtail Member

    12
    0
    May 16, 2013
    Mount Bethel, PA
    0
    It didn't really hit the shroud. There are rubber "seals" that seal the shroud to the radiator. They are flexible to move with rotation of the engine/cab. The rubber just deteriorated and weakened, and then got sucked in, breaking the fan.
     
    johnwilson_osf, Jun 13, 2013
    johnwilson_osf, Jun 13, 2013
    #3
  5. Jun 14, 2013 #4
    truckmechanic

    truckmechanic Medium Load Member

    534
    140
    Jan 14, 2012
    Hi Desert Ca
    0
    Your looking at 6 3/8 bolts remove shoud and fan together probly more to take of every application is diffrent pretty strait foward
     
    truckmechanic, Jun 14, 2013
    truckmechanic, Jun 14, 2013
    #4
  7. Jun 14, 2013 #5
    johnwilson_osf

    johnwilson_osf Bobtail Member

    12
    0
    May 16, 2013
    Mount Bethel, PA
    0
    Thanks truckmechanic I am going to get the fan now, and will put it together this afternoon.

    John
     
    johnwilson_osf, Jun 14, 2013
    johnwilson_osf, Jun 14, 2013
    #5
  8. Jun 15, 2013 #6
    kwcam

    kwcam Light Load Member

    193
    145
    Dec 29, 2012
    at the shop
    0
    You have to unbolt the fan from the hub, then unbolt the hub from the engine and pull it out to get the fan out, there should be a cut notch in the back of the fan that has to be straight up in order to remove the hub, T300 don't give you much room. hopefully the replacement fan will have the same notches
     
    kwcam, Jun 15, 2013
    kwcam, Jun 15, 2013
    #6
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