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Radiator Leak, what's the best way to repair composite radiator?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by AndersonTrans, Jan 15, 2019.

  1. Jan 15, 2019 #1
    AndersonTrans

    AndersonTrans Bobtail Member

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    Jan 15, 2019
    0
    What is the best way to repair a leak in the neck on a composite radiator in Peterbilt 389
     
    AndersonTrans, Jan 15, 2019
    AndersonTrans, Jan 15, 2019
    #1
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  3. Jan 15, 2019 #2
    McMahons Trucking

    McMahons Trucking Light Load Member

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    Jul 4, 2018
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    Maybe smear some JB weld in it other than that i would just replace it.
     
    McMahons Trucking, Jan 15, 2019
    McMahons Trucking, Jan 15, 2019
    #2
  4. Jan 15, 2019 #3
    Chipperrr

    Chipperrr Light Load Member

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    Nov 27, 2018
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    Agree, use JB weld
     
    Chipperrr, Jan 15, 2019
    Chipperrr, Jan 15, 2019
    #3
  5. Jan 15, 2019 #4
    Working2party

    Working2party Medium Load Member

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    Feb 10, 2018
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    There are some radiator repair shops that can replace just the composite or plastic tanks on your aluminum radiators $300-$500 dollars.

    Other than that, if your JB weld doesn’t work, I would try to rough the surface and try a poly-urethan. (The stuff they stick windows in with) that stuff sticks to everything and stays pliable.
     
    Working2party, Jan 15, 2019
    Working2party, Jan 15, 2019
    #4
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