Our manual says to only jack up the RV using the frame, but you did it under the axle. Why?

Our manual says the same thing. However, after consulting our RVIA Master Certified Tech (Todd), and a GDRV tech who worked on our RV recently, it's fine (and easier) to jack under the axle as long as you put the jack all the way out near the U-bolt. BUT, pay attention to the leaf springs. If they are getting compressed and you're getting a lot of resistance, use the frame. Another option (this tip came directly from the tech who worked on our RV) is to use the leveling system to just take a little pressure off the side on which you're working. Don't lift the whole set of tires off the ground.. just take a little pressure off and use the jack under the axle near the U-Bolt.

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