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Old 22 January 2019, 12:48   #1
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Zodiac N7029F adjusting tool

Good day every one,

My question is: When you use the Zodiac N7029F adjusting tool for the intercommunication valve, do you stop when the handle touches the valve edge or when the nut is deep enough so the tool disengages from it?

I find 2 differents videos on youtube. On the first one they first dismantle the nut with this tool and then later in the same video the said to reinstall the nut by turning clockwise until the tool disengage. How can you unscrew a nut when the tool can not be engaged on it?

On the second video, they dismantle with a standard 10mm socket. Unfortunately, they did not specify if we shall stop when the handle touch the valve or until the tool disengage from the nut.

From the picture I saw of the tool and the information I find on RIBnet (distance underneath the handle to the bottom of the socket: 44mm) it seem relatively easy to make one from a 10mm deep socket. If you have an original tool, please let me know if you see on it anything that can make the project of making one difficult or impossible.

Thanks and best regards.
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Old 24 January 2019, 10:30   #2
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i too have heard it both ways. When i cleaned/greased mine, i turned the nut until the tool disengaged from the nut. However i now believe firmly that one is to turn it until the cross bars hit the valve base and just stop there.

I haven't cared enough to go back mine out as that is how mine were when i disassembled them. I don't have to worry about the overpressure as my boat is a weekend toy that never sits in the sun.

Edit: I went and checked a zodiac online manual i located for ICV cleaning/lubrication. It specifically states "To adjust the overpressure system, thread the 10mm nut with the spanner. The spanner cavity is calibrated so that when the cross-bar of spanner is in contact with the top of the ICV, the correct position of the nut is attained.
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Old 24 January 2019, 10:44   #3
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dont know if anything on here helps


https://www.polymarine.com/advice/fitting-valves/
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Old 24 January 2019, 22:05   #4
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Thank you brveagle,
Following you reply I look for Zodiac ICV cleaning lubrication and I think I find the Manuel you are talking about. The - Zodiac Hurricane H590 Owners technical manuel - and I find the statement at page 2-68 and even a drawing of that at page 2-70. So now I can proceed with confidence. Again thanks for your help.
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Old 30 January 2019, 16:56   #5
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IC Tool

By memory, if you use the Zodiac tool and replace with a new spring, wind nut until the cross bar of the tool hits the valve. This sets the relief pressure to 10.8 psi.
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Old 30 January 2019, 23:31   #6
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10.8 psi! This is probably why I never notice any air escape from those valves. I suppose there are effective only if the boat is squeeze or something like that. Interesting to known anyway.
Regards, Claude Morin
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Old 31 January 2019, 05:43   #7
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Quote:
Originally Posted by morin1 View Post
10.8 psi! This is probably why I never notice any air escape from those valves. I suppose there are effective only if the boat is squeeze or something like that. Interesting to known anyway.
Regards, Claude Morin
impact pressure relief probably
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Old 01 February 2019, 09:15   #8
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Yes the I/C valve is designed as an impact relief which is why most boats with those still have Mirada pressure relief valves in them which generally blow off at no more than 4 psi
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