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Thread: Defender heater

  1. #1
    Join Date
    Aug 2012
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    Defender heater

    Today I while doing a oil change on the Defender I noticed a small amount of coolant on the passenger side chassis rail , After some investigation I noticed it was coming from the heater , Looks to be the valve . It’s not a huge amount it’s about a drip every few seconds. I can’t tell where it’s coming from but it may be coming from around the hose clamp its forming a drop at the bottom around the mounting screw. Is there some sort of issue with these units? Do I just replace it or is it something simple like a loose clamp. It only happens when i turn the heater on hot .


  2. #2
    Join Date
    Sep 2007
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    I'd start by replacing the hose clamps with proper ones. Also have a look and make sure it isn't the matrix itself that isn't leaking..
    Hercules: 1986 110 Isuzu 3.9 (4BD1-T)
    Brutus: 1969 109 ExMil 2a FFT (loved and lost)

  3. #3
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    Quote Originally Posted by flagg View Post
    I'd start by replacing the hose clamps with proper ones. Also have a look and make sure it isn't the matrix itself that isn't leaking..
    I'm pretty sure its that valve, as its only from the back of it somewhere, I'm also thinking hose clamps.

  4. #4
    Join Date
    Feb 2009
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    have a read

    Part leaking on Puma
    Jason

    2010 130 TDCi

  5. #5
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    Aug 2012
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    Ok so today I fitted a S/S hose clamp to the valve leaky hose and the problem has been solved . thanks all for the help .

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