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Clutch fan

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by lwlevens, Mar 10, 2018.

Page 4 of 4
  1. Jul 16, 2018 #31
    KTM042974

    KTM042974 Bobtail Member

    8
    0
    Jul 16, 2018
    0
    If you get air to it and the fan is still not doing it’s job then it is the fan clutch.
     
    KTM042974, Jul 16, 2018
    KTM042974, Jul 16, 2018
    #31
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  3. Jul 17, 2018 #32
    lwlevens

    lwlevens Medium Load Member

    623
    427
    Feb 9, 2018
    0
    Yeah I'll replace the clutch fan when I get some more $. And go from there.
     
    lwlevens, Jul 17, 2018
    lwlevens, Jul 17, 2018
    #32
  4. Sep 11, 2025 #33
    1990pete379_3406B

    1990pete379_3406B Bobtail Member

    34
    25
    Feb 3, 2022
    0
    Since we are re talking about fan clutch here I replaced mine and also new solenoid now mine has a manual override toggle switch but the curious thing is that I get 12 volts on both terminals at the switch. Something is not right here, now I get 12 volts on the solenoid wire but no air going to the fan, I disconnect the hose and put air directly and my fan will disengage so that means my clutch is always engage which is not good.
    Anybody has a diagram for Cat 3406B on C15 by any chance?
     
    1990pete379_3406B, Sep 11, 2025
    1990pete379_3406B, Sep 11, 2025
    #33
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