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Thread: EAS valve block rebuild - frustration!

  1. 5th August 2013, 03:42 PM #1
    davidsonsm's Avatar
    davidsonsm
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    EAS valve block rebuild - frustration!

    I rebuilt a spare that I had and put it in but everything seem to operate back to front! I'll have to take another look to make sure I put everything back together as it should be.

    I then rebuilt my original and put that back in. I have no exterior leaks that I can find but the front end of the car visually drops to the bump stops within an hour or so. Pretty even across the front. Can anybody tell me where to investigate or suggest something. Fed up off pulling valve blocks apart!
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  2. 5th August 2013, 04:25 PM #2
    TheTree
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    HI

    I assume you have pulled the EAS delay relay and checked what happens without that.

    If it is the front only, I would suspect the non-return valve or the front equaliser valves in the valve block.

    best of luck
    Steve
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  3. 5th August 2013, 04:29 PM #3
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    Quote Originally Posted by SteveFarmer View Post
    HI

    I assume you have pulled the EAS delay relay and checked what happens without that.

    If it is the front only, I would suspect the non-return valve or the front equaliser valves in the valve block.

    best of luck
    Steve
    Yeah - just trying it now to see what happens when the EAS is isolated.
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  4. 5th August 2013, 10:54 PM #4
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    Gday have you tried soapy water on solenoids? Those pesky little o'rings on shafts are easily crimped on installation. Or non return valve!
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  5. 6th August 2013, 12:14 AM #5
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    Its a good idea to use an O ring lubricant as well during assembly.
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  6. 6th August 2013, 12:16 AM #6
    superquag
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    Quote Originally Posted by FANTOM P38 View Post
    Gday have you tried soapy water on solenoids? Those pesky little o'rings on shafts are easily crimped on installation. Or non return valve!
    Yes indeed, - Don't ask how I know....

    Soapy water (or any foaming cleaner, or Windex) is your Friend...

    If all else fails, check the entrails of a chicken.
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  7. 6th August 2013, 12:20 AM #7
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    back to front operation is usually a sign that solenoid caps have been swapped during reinstall. Refer to this diagram
    http://hardrange.com/downloads/manua...Block-v1.5.pdf

    Easy to mix it up... why I made the diagram for my own benefit

    Cheers, Paul.
    My toys, projects and write-ups at PaulP38a.com
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  8. 6th August 2013, 06:51 AM #8
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    Quote Originally Posted by FANTOM P38 View Post
    Gday have you tried soapy water on solenoids? Those pesky little o'rings on shafts are easily crimped on installation. Or non return valve!
    Yeah and can't see any bubbles from the solenoid's - the tips ones at least.
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  9. 6th August 2013, 06:52 AM #9
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    Quote Originally Posted by RR P38 View Post
    Its a good idea to use an O ring lubricant as well during assembly.
    Used a smear of Vaseline. But have since noted the guru's comments about not lubing the nrv o rings as they might bind. Wonder if that could be it?
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  10. 6th August 2013, 06:56 AM #10
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    Was really careful 2nd time around to label and mark everything. The front has dropped over night with the eas delay switch isolated. Does that reveal any more?

    Will have to whip it out again. Is there any way of bench testing for leaks with an air compressor supply? Are all valves power off closed?

    Still can't work out how the valves actually open and close.
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