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How to prime 3406B injection pump???

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by wjhuskey, Jul 8, 2023.

  1. Jul 8, 2023 #1
    wjhuskey

    wjhuskey Bobtail Member

    43
    15
    Nov 1, 2014
    Arkansas
    0
    Hello everyone. I have a Cat 3406C converted to a B. It has a brand new injection pump. It was too much work for the lazy mechanic I fired to put the new one on AND prime it. It's on but not primed. Anyway, I'm wanting to get it primed but I'm not very good with this stuff. The injection pump itself doesn't have a hand primer or anything so what's the correct way to prime it? I don't want to mess anything up. Thanks in advance!
     
    Last edited: Jul 8, 2023
    wjhuskey, Jul 8, 2023
    wjhuskey, Jul 8, 2023
    #1
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  3. Jul 8, 2023 #2
    Last Call

    Last Call Road Train Member

    7,568
    45,898
    Mar 15, 2021
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    There should be a hand primer on the fuel filter .. you have to unsrew the plunger some before it will allow you.to start hand priming.
     
    Last Call, Jul 8, 2023
    Last Call, Jul 8, 2023
    #2
    wjhuskey Thanks this.
  4. Jul 8, 2023 #3
    201

    201 Road Train Member

    12,061
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    Apr 16, 2014
    high plains colorado
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    Crack open the fuel line nearest the pump, and slightly pressurize the draw tank. Had to do that with Detroits and reefers years ago.
     
    201, Jul 8, 2023
    201, Jul 8, 2023
    #3
    Bean Jr. Thanks this.
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