Coolant loss

Discussion in 'Freightliner Forum' started by VolunteerTrucker, Sep 23, 2021.

  1. VolunteerTrucker

    VolunteerTrucker Light Load Member

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    2016 Freightliner Cascadia Evolution DD15

    Pressure test shows coolant is coming out of the bottom of the water pump. If it was a bearing leak wouldn’t the coolant only leak while the truck is running? I get a lot of coolant loss while it’s shut off overnight which makes me think it may be the gasket from the pump to the block.Any thoughts would be helpful. Does anyone have a wait time estimate on water pumps?
     
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  3. MLC Adventures

    MLC Adventures Medium Load Member

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  4. VolunteerTrucker

    VolunteerTrucker Light Load Member

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    You got a pump?
     
  5. MLC Adventures

    MLC Adventures Medium Load Member

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    Nope. I know my son has got a couple from the salvage yard. You can find aftermarket non variable speed pumps, but the variable speed pumps are scarce.
     
  6. VolunteerTrucker

    VolunteerTrucker Light Load Member

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    Mine is. 2016, I didn’t think it was the variable speed one.
     
  7. VolunteerTrucker

    VolunteerTrucker Light Load Member

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  8. Antinomian

    Antinomian Road Train Member

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    Pressure in the cooling system persists after you shut the engine off and a leak may continue for a while. Sometimes EGR leaks and oil cooler leaks only happen when the truck isn't running because the pressure goes the other way when it is running.
     
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