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Old 06-21-2019, 04:50 PM   #1
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Leaking LCI leveling pump

My Georgetown Class A has a LCI pump #341 that leaks where the horizontal tank connects to the pump. It has 4 cap screws pressing the tank flange into the pump with an O ring to seal it. I have replaced the O ring but cannot seem to stop the leak. Any suggestions? Thanks.
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Old 06-22-2019, 01:04 AM   #2
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Clean it very well and dry it, make sure all of your connections are tight, then have someone cycle the system and see exactly where the leak is from and go from there. LCI's C/S has been great for me.
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Old 06-22-2019, 01:32 AM   #3
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Old 06-22-2019, 10:18 AM   #4
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Thanks, it has a slow leak at the tank's flange to the pump. The O ring does not seem to be enough to properly seal the connection. I will keep on trying.
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Old 06-22-2019, 11:08 AM   #5
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I believe I am having the same issue. The hoses/connections appear fine, but I do have a leak coming from somewhere. Still investigating...
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Old 06-22-2019, 06:31 PM   #6
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Quote:
Originally Posted by Dixie Mopars View Post
Thanks, it has a slow leak at the tank's flange to the pump. The O ring does not seem to be enough to properly seal the connection. I will keep on trying.
Can you post a pic of the flange? That may help me understand what you are seeing. I know that they use flat face connectors with O-rings on some of their stuff. Also, what is the system model number so I can pull up the system on the LCI website and try to get a better idea there.
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Old 06-23-2019, 06:20 PM   #7
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Sorry, It has been storming most of the day today. I will get some photos tomorrow. The pump is LCI model 341. Thanks!
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Old 06-23-2019, 07:10 PM   #8
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Something like this?

https://store.lci1.com/lci-2-valve-pump-assembly
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Old 06-25-2019, 08:51 AM   #9
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Yes that is what is looks like. I have ordered a square o ring that fits the tanks flange groove that I will install this weekend. I will update my progress. I took the tank and o ring to a hydraulic repair shop and the owner said that the old o ring dad been rolled in the groove. He felt that this is what caused the leak. Thanks guys.
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Old 06-25-2019, 09:22 AM   #10
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Keep us informed..
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Old 06-26-2019, 07:47 PM   #11
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After visiting two Hydraulic repair shops and getting one o ring to try and a probable part number on the oem o ring I ordered o rings from Ebay. They were what I ordered but would not fit. I forgot to say that I did try the first sample from a hydraulic shop but still had a leak.

I talked to a very nice c/s rep a LCI and after much research he advised that I would have to install a new pump. The pumps and control wiring, controller boards and dash control all come as one kit. He advised me to check with a hydraulic shop first.

So I will reinstall the oem ring with the bad area to the top and I will try sealing it with Permatex #81180 transmission gasket sealer and see what happens. I will keep you updated.
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Old 06-26-2019, 10:18 PM   #12
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Look for any other numbers on that pump. I think that it is unusual to be a single application item and the o-rings may have an alternate source.
Take a look at this page, https://www.google.com/search?q=lci+...vtx1oPjAnWfuM: I am seeing some that have a replacement tank kit with o-ring and also try NAPA for the o-ring. See if anything looks familiar.
Rather than a new LCI system, one out of a salvage yard may be a much less expensive solution.
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Old 06-27-2019, 05:45 AM   #13
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There is an o-ring inside the hydraulic pump that needs to be replaced. The entire unit needs to be taken apart to repair it. Any place that sells seals will have it. The one in mine was hard as a rock. I pulled the entire unit out and repaired it on my work bench. Eventually the oil will get into the electric motor and short it out, then it becomes expensive. The seal was about $5.00. Just labor intensive. My motor runs my slides and the levelers. Take many pictures and mark all the lines.
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Old 06-28-2019, 08:12 PM   #14
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Thanks guys, Napa store nor two hydro shops could help with the o ring. However, I slid all parts, silicone sealant and tools under the motorhome yesterday evening with the anticipation of putting it back together. Then, I discovered that I had misplaced two of the four screws that hold the tank to the pump assembly. I am working on the asphalt drive and had put down a lot of oil dry and am working on redneck creepers (cardboard). I think that I lost the screws when I was putting everything back up the last time I was under there.
I had the other two screws along with all the bolts and nuts in two ziplock bags for safekeeping. I don't know what happened, but it sure is disappointing. I swept all areas with a large shop magnet took on a handle but never located them. I will continue project tomorrow.
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