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Old 01-12-2016, 08:06 AM   #1
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Under belly diagram

How could I find out the lay out in the under belly of my 2015 Forest River Sierra. I would like to know where things are located before I open it up to add some winterizing product, (Heat trace, tank pads, etc)

Any assistance would be appreciated.


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Old 01-12-2016, 08:30 AM   #2
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Drop some panels and look ... owners can't get wiring diagrams let alone anything else. Main Grey and Black tanks are usually under your front storage compartment. Galley tank is above or just rear of the axles. Fresh Water tank is clear to the rear of the unit assuming this is a fiver. Wiring and hydraulic hoses sprinkled all over the place.

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Old 01-12-2016, 08:58 AM   #3
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I don't know which model of Sierra you have and I'm sure my Wildcat 5th wheel is not like yours, but I have no tanks behind the axle. All my tanks are between the pinbox and the axles. I learned the location of every tank by dropping the bottom cover and investigating.
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Old 01-12-2016, 09:05 AM   #4
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Plan on lots of Extra time to Neat Things Up under there! Wires and Hoses from ,rubbing through/Shorts-Holes,Smashed unconnected Heat ducts, Low/No insulation areas,ect! Most Belly covers are 1PC so additional help is always nice for R and R! Youroo!! It may Help You to make a Chart with Measurements for Future Repair if you choose to Cut a 3 sided door!
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