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#1
11-10-2012, 01:01 AM
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Hydro Lift Valve Leak - 1641
Hi folks, this is my first time posting on here as it recently came as a recommendation from a great contributor to another forum, so thanks in advance for your help!
So, I recently bought a 1641 that has some issues. The first major issue I've run into was a hydro fluid leak. I've identified it at the Hydro Lift Valve (the deck lift lever). It's coming from where the inlet is to the valve (see #11 in the image below). I actually have an entire rebuild kit for the valve, but since I narrowed it down to that one line I figured I'd try just replacing the o-rings in all 4 lines. Tonight I replaced all of the o-rings and it's still leaking out of the inlet line. My question is this; Do I need to pursue the rebuild of the entire valve, or is that not the issue? It seems to me that there is an issue somewhere else. Where the inlet and outlet tubes connect into the valve you can see right through from one side to the other, so I can't imagine the valve is causing too much pressure in the lines. However, is it possible there is a blockage somewhere further down the line causing the leak?  One thing to note is that the fluid coming out is a bit mixed in color, appearing white and possibly foamy on the ground. 
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#2
11-10-2012, 07:07 AM
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Clyde
I don’t think it is a pressure or blockage issue. Take a good look at the sealing surfaces and also make sure the clamp (part#6) is not upside down or that it is not bent. You may have a crack in the line also. Good to see you made it over here.
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2264 with 54 GT deck 1641 AKA Black Jack with a 402-E Haban Sickle bar mower JD317 dump truck BX2670 with FEL
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#4
11-10-2012, 09:57 AM
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Can you get some pics of the leak? Wondering if you nicked the O-ring? It's got to be something simple. I'd pull the valve and inspect everything with a magnifying glass. Look for a crack at the tube ends. Compare the one that leaks to the ones that don't leak.
__________________
2264 with 54 GT deck 1641 AKA Black Jack with a 402-E Haban Sickle bar mower JD317 dump truck BX2670 with FEL
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#5
11-10-2012, 11:05 AM
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Tried to get pictures. It seems impossible. My camera just won't do it. But after watching it again while trying to take pictures it seems to be squirting out pretty focused and hard so I'm thinking there may be a pinhole in the line just on the outside of the flange somehow.
Am I going to have to order the line from cub if this turns out to be it? Or is there something I can use similar brake line and a bender? This line is solid all the way back. No rubber.
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#6
11-10-2012, 12:40 PM
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How about the possibility of the water in the system causing the leak? Blowing by the seal?
Since I took it apart a little further and cleaned it up some more I noticed some gasket sealer on almost every opening of the rear/trans. I'm thinking that might be where the water is coming from.
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