Mobile RV Stabilizer Jack Replacement Across Florida
A stabilizer jack that will not extend, a scissor jack that has corroded in the down position, or an electric stabilizer with a failed motor are among the simplest repairs in mobile RV service. We carry the most common jack styles and install at the coach.
The functional distinction between a stabilizer jack and a leveling jack is load capacity and purpose: leveling jacks are rated to lift and support the coach off its suspension, distributing the coach weight among the jack pads and ground. Stabilizer jacks are designed only to reduce movement in a coach that is already supported by its tires, tongue jack, or leveling jacks. Stabilizers typically carry 2,000 to 5,000 pounds maximum vertical load - enough to resist occupant movement and road vibration, not enough to lift a 30,000-pound fifth wheel. Extending stabilizers before leveling jacks are set, or expecting stabilizers to perform leveling functions, is the leading cause of stabilizer failure on coaches that should not have had any mechanical problems at their age.
Why Scissor Jacks Corrode So Fast in Florida
Florida's combination of salt air, ambient humidity, and UV exposure is extraordinarily aggressive on zinc-plated steel components. Scissor jacks on towable coaches are typically welded steel with a zinc dichromate or zinc plating applied at the factory. That plating provides corrosion protection for three to five years in a mild climate. In coastal Florida - from Miami through the Space Coast, around Tampa Bay, and along the Panhandle - the same plating can fail within one to two seasons, exposing bare steel that then rusts to seizure.
Scissor jacks that are stored retracted between uses trap moisture inside the mechanism at the pivot points, where it cannot evaporate freely. The result is accelerated corrosion at the pivot pins and screw threads, which are the two points that determine whether the jack extends at all. A jack that was working fine at the end of last season and will not budge at the start of the next one has usually rusted at those points during storage.
Replacing One Versus Replacing All
The mechanical case for replacing all four stabilizers when one fails comes down to condition parity. If one electric stabilizer motor has failed, the other three are the same age, from the same manufacturing run, and exposed to the same environment. Replacing only the failed unit leaves three that are likely to fail within the next season or two, each requiring a separate service call. Doing all four at one visit is more efficient in total labor cost.
The practical caveat is budget. If only one jack has failed and the others show normal operation with no signs of binding or corrosion at the travel threads, individual replacement is reasonable. We inspect all four jacks at every stabilizer service call and give a condition report on the remaining units so the owner can make an informed decision about how to proceed.
Manual Retraction of a Seized Scissor Jack
A scissor jack that will not retract electrically - either because the motor failed or because corrosion has seized the screw - can be retracted manually by attaching a 3/4-inch socket to the screw end of the jack and turning with a ratchet or breaker bar. This requires enough torque to overcome the corrosion at the screw threads, and on badly seized jacks the force required can be significant enough to need a breaker bar extension.
If the screw has corroded to the point where the socket cannot grip or the screw begins to strip, the jack is a write-off and needs to be cut free. A reciprocating saw with a metal blade is the field tool for this situation. The jack is cut at the screw, the remaining pieces are removed from the coach, and a replacement is installed. This procedure is done with the coach on a level surface with tire blocks in place for safety.
Electric Stabilizer Construction and Failure Modes
Electric stabilizers use a 12-volt DC motor driving a screw actuator through a reduction gearbox. The motor output shaft is connected to the screw via a short coupling, and the screw threads through a fixed nut mounted to the jack body. Extension happens as the screw pushes the pad downward; retraction reverses the motor and draws the pad up.
The three failure modes in order of frequency: motor brush failure (the most common - motor turns freely but produces no torque or produces reduced torque that shows up as slow operation), screw thread corrosion (the screw binds in the nut and the motor stalls, often tripping a thermal protector), and coupling failure (the motor runs freely but the screw does not turn). Measuring amp draw at the motor during operation - typical is 8 to 15 amps for a working unit - identifies motor problems; the screw and coupling are visual inspections.
Why an Electric Stabilizer Makes Noise Without Extending
A stabilizer that makes the sound of a running motor but does not move is almost always a coupling failure or a completely seized screw. The motor is turning, but the rotation is not being transmitted to the screw. Gearbox failures produce a similar symptom but with a different sound - a grinding or slipping quality to the motor noise rather than clean running. Disassembly of the actuator confirms which component has failed.
A more subtle version of this symptom is a stabilizer that extends very slowly and makes a laboring motor sound - this is a partially seized screw, where the motor is producing enough torque to overcome the resistance but working significantly harder than normal. The current draw on a laboring motor is typically 20 to 30 amps rather than the normal 8 to 15, which trips the thermal protector after a few minutes of operation. Lubrication of the screw threads sometimes restores normal operation on a partially seized unit, but replacement is the reliable fix.
Leg Pad Replacement and Florida Soil Conditions
Florida's ground conditions vary dramatically by region and season. Sandy coastal soils provide almost no resistance to a pad sinking under the coach weight, especially when wet from rain. Clay-heavy soils in the central Florida and north Florida interior can seem firm but become soft under sustained point loading. The Kissimmee area, much of the I-4 corridor, and low-lying areas near the St. Johns River watershed are particularly prone to pad sinking during summer rainy season.
Stabilizer pads of three to four inches in diameter - the standard factory size on most Lippert and Atwood electric stabilizers - are adequate for firm, dry ground. In Florida's soft soil conditions, adding aftermarket jack pads of eight to twelve inches in diameter dramatically reduces pad sinking. We carry oversized pads and install them at every stabilizer replacement on coaches based in coastal or central Florida.
Grease and Annual Maintenance
Electric stabilizer screw actuators need grease annually - the factory lubrication is typically a light machine oil that washes off in rain and does not survive a full Florida season of moisture exposure. The correct lubricant is a waterproof lithium complex grease or a dry-film PTFE spray, applied to the screw threads after full extension. This is a fifteen-minute task that routinely extends the service interval by two to three years by preventing the screw corrosion that causes seized jacks.
Jesse Marcer and the Triton RV Repair team carry Lippert, Atwood, and Stromberg-Carlson compatible stabilizer jacks on the service truck for same-visit replacement across Florida. RVIA certification covers the full scope of leveling and stabilizer service, and we operate statewide from the Keys through the Panhandle.
What Does Mobile Rv Stabilizer Jack Replacement Cost in Florida?
Typical ranges for mobile service across Florida. Service call (trip + first hour) is $299-$399, confirmed at booking.
| Service | Typical Range | Notes |
|---|---|---|
| Service call + jack inspection | $299 - $399 | All stabilizers inspected; manual extension test; motor amp draw measured |
| Manual scissor jack replacement (per jack) | $75 - $165 | A-frame or X-brace; most common on towable coaches |
| Electric stabilizer replacement (per jack) | $185 - $380 | Motor and screw actuator; Lippert or Atwood; includes grease and travel check |
| Stabilizer leg pad replacement (per pad) | $25 - $65 | Prevents sinking into Florida clay soil |
| Full stabilizer set replacement (4 corners) | $580 - $1,200 | All four electric stabilizers; most efficient when multiple fail |
Service call (trip + first hour) is $299-$399 depending on location. Call (888) 702-6880 for an exact quote.
Questions we get on this service
What is the difference between a stabilizer jack and a leveling jack?
A stabilizer jack is designed only to reduce coach movement in a unit already supported by its tires, tongue jack, or leveling jacks - maximum 2,000 to 5,000 pounds vertical load. A leveling jack is designed to lift and support the coach off its suspension - 10,000 to 25,000 pounds per jack on a full Class A. Using stabilizers as leveling jacks is the leading cause of stabilizer failure on coaches that should have no mechanical problems.
Why do scissor jacks corrode so quickly in Florida?
Florida's combination of salt air, ambient humidity, and UV exposure fails the factory zinc-plating within one to two seasons in coastal areas, exposing bare steel that rusts to seizure. Scissor jacks stored retracted trap moisture at the pivot pins and screw threads - the two points that determine whether the jack extends - where it cannot evaporate, accelerating corrosion during storage.
Can I replace just one stabilizer jack or should I do all of them?
The practical recommendation depends on condition. If one motor has failed and the others are the same age and environment, replacing all four at one visit is more cost-efficient in total labor than three subsequent service calls. If only one has failed and the others extend and retract smoothly, individual replacement is reasonable. We inspect all four jacks at every call and provide a condition report.
How do I manually retract a scissor jack that will not power up?
Attach a 3/4-inch socket to the screw end of the jack and turn with a ratchet or breaker bar. If the screw has corroded past the point where a socket can grip, the jack needs to be cut free with a reciprocating saw and replaced. This procedure is done with the coach on a level surface with tire blocks in place for safety.
What is an electric stabilizer jack and how is it different from a manual one?
An electric stabilizer uses a 12-volt DC motor driving a screw actuator through a reduction gearbox, with extension and retraction controlled by motor direction. A manual scissor jack uses a hand-driven or drill-driven screw through the same mechanical principle. Electric stabilizers can be moved with a cordless drill on the manual input port if the motor fails, making them functionally equivalent to manual jacks as a backup.
Sources
- Lippert stabilizer jack documentation - Stabilizer jack specifications, motor part numbers, and manual override procedures.