coolant thingy making a mess

Discussion in 'Freightliner Forum' started by shatteredsquare, Nov 2, 2020.

  1. shatteredsquare

    shatteredsquare Heavy Load Member

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    why is the coolant pump leaking from behind the pulley? That's the clutch right? also why is it leaking from the temp sensor? there's pink icing everywhere, I found the drip coming from behind the big round thingy

    20201102_164351.jpg 20201102_164252.jpg
     
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  3. '88K100

    '88K100 Medium Load Member

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    Gasket leaking? Im not familiar but on my Freightliner a I finally located a constant coolant leak being a hairline crack on top of overflow tank.
     
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  4. AModelCat

    AModelCat Road Train Member

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    No clutch on a water pump. If its leaking out the weep hole your pump is worn out.
     
  5. cjb logistics

    cjb logistics Heavy Load Member

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    I say water pump also, coolant reservoir not leaking enough to make those spots behind pulley and belt.
     
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  6. ibcalm19

    ibcalm19 Medium Load Member

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    Check for hoses above it more than likely is running down from somewhere. Tighten up clamps
     
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  7. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Get Blue Beacon to wash it off.

    Then watch to see where it comes back from.

    The surge tank typically doesn't leak there. Possible though. That would be an o ring right there.

    When they go, they crack.
     
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  8. Trucking in Tennessee

    Trucking in Tennessee Road Train Member

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    Thingy? Must be a female. That would be a pulley.
     
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  9. "semi" retired

    "semi" retired Road Train Member

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    Ah, to be a service tech today, "coolant thingy"? Ever wonder why they call it the "weep hole"? :crybaby:
     
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  10. uncleal13

    uncleal13 Road Train Member

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    First picture is most likely water pump failure. Look up under there, you’ll see a weep hole, if it’s coming out of that hole then the pump is failing.
    Second picture, just try tightening the plastic nut.
     
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  11. shatteredsquare

    shatteredsquare Heavy Load Member

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    weep hole it is, kind of it to give you warning ahead of time. 368k and it's only needed a starter, I ignored that warning for 6 months until I needed a tow. Everything is a wear item to eventually be replaced. driver included. what goes next after the water pump. I baby the gaskets by not moving it at all until oil temp is at least 150 F then gently up to 200 F, I keep the injectors clean with routine floggings and keep the cylinders clean with 24/7 engine brake. blackstone says it's the cleanest burning DD13 they've ever seen.
     
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