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Old 28 October 2013, 14:28   #1
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FC-470 Restoration

I had the valves on my FC-470 serviced in June at IBC. Holes were patches and sealant was injected in the tubes. Now I appear to have a leak in either bow or port side. The valves on my port side work well. No [audible] leak matter what position they are in. The valves on the starboard side however need to be in very specific positions marked with permanent marker not to leak. If they are not they will audibly leak. First off, is this normal and to be expected? After rebuild my expectation was that all valves operate like the port side valves. Are the valves hard to rebuild yourself?

There is also a 1" area of exposed fabric on the bow. Could this be the source of the leak? I have yet to spray it with soapy water to check.
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Old 28 October 2013, 16:11   #2
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Does it leak with cap off or on. You may need new rubber flap on inserts or you might have a gauge on valve surface. To properly repair that it would have to be machined/surfaced.
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Old 28 October 2013, 16:13   #3
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With cap off. With rubber flap do you mean bailer valves?

Is the valve surface on the boat or on the valves itself? What if I replace them with a new valve assembly? I was thinking about replacing all valves with new assemblies next year. Perhaps even do it myself.
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Old 28 October 2013, 16:17   #4
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I mean diaphragm #2195. Don't need to replace metal inserts. That's only part that wears out and cap seal #2213. Westport Marina on Lake Champlain ZODIAC Inflatable IC Valve Parts on the right.
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Old 28 October 2013, 16:26   #5
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Thanks. That's very helpful.

Any idea why two of the valves are 'finicky' and two are not? IBC supposedly replaced the diaphragms in June. According to the manual its 12 o'clock for inflation and 6 o'clock for navigation (plastic arrow on dial). My port side valves however have permanent marker marks in arbitrary position (5 or 7 I think) and need to be exactly aligned with these in order to inflate. If they are off the marks you can hear them leaking. Any idea why this is? Do you think I can fix it? I'm a little annoyed since I spent a significant amount having them serviced.
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Old 28 October 2013, 16:28   #6
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when you say 'gauge on valve surface', are you referring to the surface in the bottom of the IC valve where the diaphragm is supposed to seal?
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Old 28 October 2013, 16:35   #7
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I mean surface of cone shaped brass valve. Otherwise, valve can be positioned incorrectly in tubes to some extant as in value of 12 o'clock points to true 1 o'clock. Hence you would need to adjust correct Inflation/Navigation position. If you have position where it doesn't leak I wouldn't worry too much. It's ok of valves leak with cap off thought. Diaphragms are not designed to be absolutely air tight. just enough to let you inflate the boat.
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Old 28 October 2013, 16:40   #8
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I think I'm going to disassemble them this winter and take a look. If nothing else adjust the port side valves to their true position. In terms of lubrication, what need to be lubed? Manual says intercommunication valves need to be cleaned & lubed with marine grease.
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Old 28 October 2013, 16:41   #9
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Thanks! I find this very helpful.
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Old 28 October 2013, 16:42   #10
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I wouldn't do that. That would mean taking valves out of tubes. Some special tools are required. We only talk about brass cone.
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