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  1. #1
    Join Date
    Aug 2001
    West Vancouver, Canada

    Unhappy Detaching Heater Core Pipes/Hoses from the Firewall Junction

    Hey guys,

    Anyone have some tips on how to detach the heater core pipes from the hoses at the firewall junction?

    We've watched the videos countless times, analyzed every which way til Sunday, and the things still refuse to release.

    Technique seems to be a push in on the rings at or just behind the raised triangular edge, hold hose in place and twist counter clockwise, but they just refuse to budge. We're almost at the point of taking the "wreck and replace" path, but wanted to see if anyone here had some extra insight or encouragement!

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    01 V70XC/Silver/Graphite/Touring & Versatility Packs/No Mods
    Servoweb Technologies developers of web stuff...
    Paddle Surf Canada Skier Community

  2. #2
    Join Date
    Feb 2013
    Boston, MA


    Try to open expansion tank, it may become easier. Otherwise, you described it right. Pull harder
    2002 V70 (sold)
    2005 XC70 (Telos Road took it. Did a chassis swap)
    2016 XC60

  3. #3
    Join Date
    Jun 2013


    When I was playing around with my heater core, I don't remember having any trouble detaching the hoses from the firewall. The connections were about in the same condition as yours appear to be (good). Push the hose as far into the firewall as it will go with your left hand, twist the cuff on the connector counterclockwise with your right hand to unlock, and the hose should then hopefully pull off. In my case, I didn't have to use much force. In fact, removing and reattaching the heater hoses was probly the most pleasant part of the job for me!

    Have you seen the first picture of this tutorial?:
    2007 XC70, 206,000 miles
    2002 V70XC, 130,000 miles, parts car

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