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Thread: EAS valve stem reconditioning?

  1. 24th October 2012, 05:25 PM #1
    Robsrod 58
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    EAS valve stem reconditioning?

    Yes, another EAS question.

    Has anyone come up with a successful method of reconditioning the valve stem sealing face ( rubber bit ), or replacing them, or even better can they be purchased.

    My block was O/H about a year ago, and now its leaking "up" in the rear and I'm suspecting the valve stems.

    Any ideas appreciated.

    Rob
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  2. 24th October 2012, 06:24 PM #2
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    Scouse
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    Paul mentioned repairing these in one of the valve block threads.

    There's a few threads on this so a search might take a while. It might even be mentioned in the EAS valve block thread on RR.net.
    Scott
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  3. 24th October 2012, 06:39 PM #3
    Robsrod 58
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    I did a bit of a search on RR.net and found a couple of threads talking about using emery paper to reface them, but this sounds like it might cause more problems than it fixes. Has anyone had any success in replacing the rubber seat?

    I'm trying to purchase a whole block assy cheap so I can do some experimenting, but there aint many cheap ones out there!

    Rob
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  4. 24th October 2012, 10:00 PM #4
    Rupert Prior
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    i make parts for the 2 larger valve plungers and the diaphram but have not had much call for the smaller plungers as they don't work as hard as the others and suspect ones can be moved to the top of the valve block at service. the "leaking up" problem is usually dirty valves or leaking O rings.
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  5. 25th October 2012, 04:38 AM #5
    Robsrod 58
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    Thanks for that, I'm assuming the leak is in the inlet and rear bag valves. I'll pay special attention to that when I pull it down in the next couple of weeks.

    Rob
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  6. 25th October 2012, 07:14 AM #6
    PeterAllen
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    I used 2000 grade wet and dry on mine and it appears to have worked. Would have preferred to replace the rubber but couldn't source them anywhere. I remember seeing complete solenoids available in the UK but couldn't find anyone that supplied the stem alone or the rubber bits other than the O rings
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  7. 25th October 2012, 07:40 AM #7
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    Scouse
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    Some info here:

    EAS solenoid repair
    Scott
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  8. 25th October 2012, 07:54 PM #8
    Robsrod 58
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    Quote Originally Posted by Scouse View Post
    Some info here:

    EAS solenoid repair
    Yeh Scouse, thats the thread I was looking at which got me thinking. PeterAllen, Did you use a drill press? if so did you drop the spindle on to the wet & dry to obtain a flat surface, also did you use it wet?

    I'm thinking of using a whetstone to the same effect but finer if possible.

    Thoughts please.

    Rob
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  9. 26th October 2012, 07:01 AM #9
    PeterAllen
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    No I didnt use a drill press, I used it by hand with the sand paper sticky taped to the table and holding the stem. A drill press would be much easier. I tried both wet and dry and didnt see much difference either way. I did mostly wet but just through dipping the end of the stem in a bowl of water. seemed a bit smoother wet whilst doing it. I didnt get the indentations out all the way and was reluctant to wear away too much, but seemed to have worked.
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