The name ‘stabilizer jack’ causes confusion because these systems don’t actually level your RV or support significant weight like leveling jacks do. Stabilizer jacks are designed to reduce bounce and sway when you’re moving around inside, not to lift or level the trailer. Using them incorrectly can damage both the jacks and your RV frame over time.
Proper procedure is to level your RV first using your front jack and side-to-side leveling blocks, then lower stabilizer jacks until they just contact the ground with minimal pressure. Many owners make the mistake of cranking them down hard, trying to lift sagging areas or eliminate all movement. This puts stress on mounting points that aren’t designed for load-bearing and can crack frame members or bend the jack mechanisms.
The most common mistake is using stabilizers to compensate for an unlevel campsite instead of properly leveling with blocks first. Stabilizer jacks work best when your RV is already level and they’re simply providing light downward pressure to reduce flex in the frame. You should be able to lift most stabilizer jacks slightly by hand even when properly deployed.
Signs you’re over-cranking include difficulty retracting jacks, bent stabilizer arms, or new squeaks and creaks when moving around inside. Quality aftermarket stabilizer systems often include better mounting hardware and more robust mechanisms, but they still work on the same principle: light contact pressure, not structural support. Understanding this difference prevents expensive repairs and makes your RV much more stable when used correctly.