I noted that you have no responses on this very important problem. While I cannot provide a solution for you, this issue and also leaking hydraulic jacks could affect many of us with Lippert hydraulic jack levelling systems. Of course they would like us to buy a completely new part instead of building and selling us basic seal repair kits for their systems......profit. Of course the more Lippert's parent company buys up their competitors (Kwikee Step and Power Equipment as examples) the less options buyers will have. There are a few hydraulic companies out there (based on google searches) that, given enough demand, may come up with kits for Lippert customers being hosed. Unfortunately that does not help your immediate issues. The only suggestion I can make is perhaps a local hydraulic repair can check the pump and determine if some standard o ring will repair your unit. Please let us know if you are able to come up with a cost effective solution for your problem as it could save us from future gouging.
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