05 freightliner coolant loss Detroit 40

Discussion in 'Freightliner Forum' started by Jeff6171, Sep 24, 2019.

  1. Jeff6171

    Jeff6171 Bobtail Member

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    Sep 24, 2019
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    I did talk to the head mechanic at freightliner! He is the 1 who told me about the bad cast on my particular head cast!
     
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  3. Jeff6171

    Jeff6171 Bobtail Member

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    Sep 24, 2019
    0
    Done it did every test possible no white smoke from stacks,no water in oil,ran with cap off for 2 days,did clear plastic bottle with over flow tube in it,no bubbles,I did injector cups,I did egr COOLER! I did dye test,did pressure test on system,I tighten every clamp that has a hose,I disabled rear heater core just to see! Head tech at freightliner told me about the cast! And explained my symptoms exactly to the tee
     
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  4. 2hot2handle

    2hot2handle Light Load Member

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    Aug 25, 2015
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    Often the overflow reservoir tank cracks inside the reservoir and leaks out during operation under pressure going unnoticed because the crack is internal and gets blown away by the fan during operation.
     
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  5. Smellfunny

    Smellfunny Road Train Member

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    I would be interested in seeing this TSB.
     
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  6. 2hot2handle

    2hot2handle Light Load Member

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    Aug 25, 2015
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    The tank cracks between the overflow tank and the high pressure overflow tank which has a vent to ground tube which if the high pressure tank is being pressurized will push coolant to the ground tube which dumps out and is blown away by the fan. There's your tsb.
     
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  7. Smellfunny

    Smellfunny Road Train Member

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    I was talking about where he was talking about TSB for cracked head.
     
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  8. 2hot2handle

    2hot2handle Light Load Member

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    Aug 25, 2015
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    :oops: my apologies.
     
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  9. Smellfunny

    Smellfunny Road Train Member

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    No problem
     
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