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How to hold (fuel pump) gear to tighten nut?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by PE_T, Apr 20, 2020.

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  1. Apr 20, 2020 #1
    PE_T

    PE_T Road Train Member

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    How do you hold on the gear to be able to tighten the nut to 184 ft lbs on a fuel pump for the DD15? I see Detroit sells a special tool for this, but is there something else I can use instead? I was reading that someone used a large pipe wrench.
     

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    Last edited: Apr 20, 2020
    PE_T, Apr 20, 2020
    PE_T, Apr 20, 2020
    #1
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  3. Apr 20, 2020 #2
    Rideandrepair

    Rideandrepair Road Train Member

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    Can you put it into the fuel pump first? Just an idea. I’ve never done one.
     
    Rideandrepair, Apr 20, 2020
    Rideandrepair, Apr 20, 2020
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  4. Apr 20, 2020 #3
    PE_T

    PE_T Road Train Member

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    Not in this case because it will go into the engine, and at that point the gear is not accessible.
     
    PE_T, Apr 20, 2020
    PE_T, Apr 20, 2020
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  5. Apr 20, 2020 #4
    Cattleman84

    Cattleman84 Road Train Member

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    Go find a spanner wrench that is just a shade to small to slip around the gear... Then grind the prongs of the spanner to fit into the gear teeth.
     
    Cattleman84, Apr 20, 2020
    Cattleman84, Apr 20, 2020
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  7. Apr 20, 2020 #5
    truckdriver31

    truckdriver31 Road Train Member

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    impact with a torque rod
     
    truckdriver31, Apr 20, 2020
    truckdriver31, Apr 20, 2020
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  8. Apr 20, 2020 #6
    PE_T

    PE_T Road Train Member

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    I found this thread, and while it’s not exactly for single gears someone did mention using rope, which should work if it’s wrapped in and around the teeth or even on the three bolts on this particular fuel pump gear and then tighten down the rope on something very stable.

    how to tighten primary drive gear nut?
     
    PE_T, Apr 20, 2020
    PE_T, Apr 20, 2020
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  9. Apr 20, 2020 #7
    little cat 500

    little cat 500 Road Train Member

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    put it in a wood vice maybe
     
    little cat 500, Apr 20, 2020
    little cat 500, Apr 20, 2020
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  10. Apr 20, 2020 #8
    PE_T

    PE_T Road Train Member

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    That’s a good idea!
     
    PE_T, Apr 20, 2020
    PE_T, Apr 20, 2020
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  11. Apr 20, 2020 #9
    little cat 500

    little cat 500 Road Train Member

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    or take an old gear split it in half weld them to a cheap vice hell id come up with something
     
    little cat 500, Apr 20, 2020
    little cat 500, Apr 20, 2020
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  12. Apr 20, 2020 #10
    Dodsonf855

    Dodsonf855 Bobtail Member

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    If there are meshing teeth visible stuff a shop rag between the two gears and let that bind the gears to stop engine from turning torque nut then reverse engine and remove rag.
     
    Dodsonf855, Apr 20, 2020
    Dodsonf855, Apr 20, 2020
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