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coolant hose routing 3406E

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by benny906, Jan 5, 2020.

  1. Jan 5, 2020 #1
    benny906

    benny906 Bobtail Member

    20
    12
    Nov 3, 2017
    0
    I have 2009 389 that I installed this 3406E cat. my heat works well in the bunk, blows little to warm air in the cab.
    looking to find the routing for the heater hoses, or possibly a water flow chart for the cat 3406E.
    I also have a coolant heater on it. If I fire it up the cab blows hot like it should?? i must have a couple of hoses switched?????
    TIA
     
    benny906, Jan 5, 2020
    benny906, Jan 5, 2020
    #1
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  3. Jan 6, 2020 #2
    swaan

    swaan Road Train Member

    2,942
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    Jul 12, 2009
    BC canada
    0
    Kinda hard to describe with out pics.

    But basically any port on the back of water pump is suction or return for heater. That is the big 3" pipe from bottom rad hose that goes up to water pump.

    Then back bonnet on oil cooler has more ports. These are the supply or pressure ports for heater.

    Hope that helps.
     
    swaan, Jan 6, 2020
    swaan, Jan 6, 2020
    #2
    Rideandrepair and benny906 Thank this.
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