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Mysterious Coolant Hose...

Discussion in 'Early CJ5 and CJ6 Tech' started by Ray Hogan, Aug 19, 2019.

  1. Aug 19, 2019
    Ray Hogan

    Ray Hogan Member

    Joined:
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    97C23E53-F525-4DDD-997C-0104C348C9EF.jpeg FA35C680-245A-4FDD-BF99-D00DEF30A0C7.jpeg 98CF9BEF-3B51-4781-9354-343EDC813641.jpeg EDB9762A-ACDD-43B0-A16D-E94347BD073F.jpeg This hose runs from the top right side (normally plugged) of the water pump, makes a big “loop” that is zip-tied up, and then goes to the rear right of the head (normally plugged). What was the purpose, a thermostat bypass? Wondering what function it might have served or if it’s even necessary. I haven’t been able to research any clues, ha. Thanks for any help.
     
  2. Aug 19, 2019
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

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    heater hose sans heater
     
    Thean and ITLKSEZ like this.
  3. Aug 19, 2019
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    To me it looks like there is tape covering a pair of knockouts. There might have been a vintage aftermarket heater that was removed or they never sourced one. Either way your typical bypass is plugged so you should keep that line open for now. Maybe source a heater for it.
     
  4. Aug 23, 2019
    Ray Hogan

    Ray Hogan Member

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    Well, I guess it’s heater supply and return ... ther is a fitting/shut off valve at its mid point, but no evidence that a heater was ever installed. I don’t need a heater here in central Texas, so debating whether or not to remove it and cleanup that side of the engine compartment or just leave it in place since its been there 50+ years according to the PO.
     
  5. Aug 23, 2019
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    x2
     
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