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Detroit Series 60 Fan On Constantly

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Brewart12, Jun 25, 2020.

  1. Jun 25, 2020 #1
    Brewart12

    Brewart12 Bobtail Member

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    Jun 25, 2020
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    Hey everyone brand new to the site.

    I have a detroit series 60 12.7 L in a 2001 Fire Truck and the fan is constantly on.

    It doesnt appear to be controlled by an air solenoid its hooked directly into the belts if that makes sense.

    Is this type of setup suppose to stay on constantly or cycle on and off ?

    Thank you
     
    Brewart12, Jun 25, 2020
    Brewart12, Jun 25, 2020
    #1
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  3. Jun 25, 2020 #2
    bad-luck

    bad-luck Road Train Member

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    Usually the fans are either air or electronically operated. It is possible, that the fan on the truck, is set to run all the time, because of the short runs, and the excessive idling, when pumping if it is an engine. Do you have any pix?
     
    bad-luck, Jun 25, 2020
    bad-luck, Jun 25, 2020
    #2
    Rideandrepair Thanks this.
  4. Jun 25, 2020 #3
    bad-luck

    bad-luck Road Train Member

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    Forgot to welcome you here!
     
    bad-luck, Jun 25, 2020
    bad-luck, Jun 25, 2020
    #3
  5. Jun 26, 2020 #4
    Rideandrepair

    Rideandrepair Road Train Member

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    If there’s a 1/4” air line running into the fan, it comes from the selinoid. You’ll also see the 2 disk clutch itself, behind the belts. If it’s a clutch type fan.
     
    Rideandrepair, Jun 26, 2020
    Rideandrepair, Jun 26, 2020
    #4
    lwlevens Thanks this.
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