Does this service manual help
http://www.powergearus.com/documents...ideout_Sys.pdf
any?
Where exactly is the leak, at the threads or in the actual "rubber" hose? If the threads are leaking, a small tightening might stop the leak.
If the hose has a hole, you are correct; replacement is your only option. Did you locate both ends of the leaking hose? If you did, tie a small rope securely to one end before pulling the hose out. This leaves the rope to pull a new hose into place.
FWIW, an owners manual would not contain diagrams of hose routing.
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2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA.
" My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy