That's different than the engine hydraulic system (and I'm not even sure your ISC will have one of those).
Sounds like somebody needed a hydraulic leveler pump like yours. I can't imagine all the screws falling out and the pump coming off the bracket.
There should be either three or four hydraulic hoses, though, depending on the number of jacks on the rig. Probably three on a 2001?
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is now West Palm Beach, FL
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