10 Essential Repair Kits for Fixing a Broken RV Step Mechanism

Nothing halts a departure day faster than hearing the grinding, groaning protest of a jammed RV entry step. These hard-working mechanisms endure constant exposure to road grit, moisture, and heavy foot traffic, making eventual failure a matter of when rather than if. Armed with the right replacement parts and diagnostic knowledge, any RV owner can rebuild their steps and avoid a costly trip to the service center.

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Troubleshooting a Jammed or Sagging RV Entry Step

Before purchasing any replacement parts, it is essential to determine whether the step failure is electrical or mechanical. Begin by disconnecting the main four-way power plug underneath the steps to isolate the mechanism from the coach’s electrical system. Using a portable 12-volt power source, apply power directly to the motor leads to see if the motor spins; if it runs smoothly, the issue lies in the controller, wiring, or door switch.

If the motor hums but nothing moves, or if the step sags and wobbles underfoot, the problem is mechanical. Visually inspect the steel step linkages for bends, look for sheared pins, and check the brass bushings at each pivot point for excessive play. A step frame that feels spongy when stepped on usually points to worn shoulder bolts, while a clicking noise indicates stripped teeth inside the gearbox.

Always exercise extreme caution when working near the step mechanism. The motorized linkage packs enough torque to easily crush fingers or hands if the system activates unexpectedly. Always support the step frame with jack stands or solid wood blocks, disconnect the coach batteries, and keep clear of the step’s path of travel during testing.

Step Motor Upgrade – Lippert 379146 Kwikee Motor

The electric motor is the mechanical heart of the automatic step system, converting 12-volt DC power into the rotational force needed to swing heavy steel steps. Because this component is mounted directly underneath the coach chassis, it must withstand constant water spray, road salt, and temperature extremes. When internal seals fail, water enters the motor housing, causing rust, electrical shorts, and complete mechanical seizure.

The Lippert 379146 Kwikee Motor is the industry standard replacement for modern integrated-motor-gearbox-linkage (IMGL) systems. This motor features a fully sealed, corrosion-resistant housing and a high-torque output designed to deploy the steps quickly and reliably. Unlike generic alternatives, the drive gear is precision-machined to mate perfectly with the internal Kwikee gearbox, reducing the risk of premature gear stripping.

• Operates on standard 12-volt DC systems
• Direct replacement for IMGL step configurations
• Fully weather-sealed casing to prevent moisture intrusion
• Includes a pre-installed, high-durability drive gear

Before purchasing, verify the manufacture date of your step system, as this motor is specifically designed for Kwikee steps produced after 2006. It will not mount directly to legacy pre-2006 systems without a complete linkage conversion kit. This upgrade is ideal for owners dealing with a motor that clicks or hums without moving, but it is unnecessary if your current motor still operates smoothly under direct 12V testing.

Gearbox Linkage Kit – Lippert 379147 Kwikee Gear Kit

The gearbox linkage kit acts as the mechanical bridge between the fast-spinning motor and the heavy step frame. It reduces the motor’s speed while multiplying its torque, allowing the system to lift and support the steps. The internal gears are designed with intentional fail-safe tolerances, meaning the teeth will strip to protect the motor if the steps strike a curb or rock during deployment.

The Lippert 379147 Kwikee Gear Kit is engineered to restore crisp, slop-free movement to the step assembly. The kit features a hardened steel gear plate, a matching linkage arm, and self-lubricating brass bushings that eliminate lateral play. Its precision-cut teeth mesh seamlessly with the motor drive gear, preventing binding and reducing operational noise.

• Compatible with Kwikee Revolution (IMGL) steps
• Includes specialized brass washers to prevent lateral play
• High-torque gear plate design for reliable load bearing
• Requires standard hand tools and snap ring pliers for installation

Installing this kit requires careful alignment of the linkage arm with the main gear sector. Incorrect alignment can cause the steps to operate in reverse or bind at the end of their travel cycle. This kit is the perfect solution for steps that slide out only halfway, make a popping noise under load, or feel loose when extended. It is not suitable for older Kwikee systems that utilize a curved linkage arm rather than the straight IMGL linkage.

Control Module – Lippert 909510001 Kwikee Controller

The control module is the electronic brain of the RV step system. It monitors the current draw of the step motor; when the steps hit their physical travel limits (fully open or fully closed), the motor stalls, causing a spike in current that the controller detects to instantly cut power. This smart system prevents the motor from burning out and eliminates the need for finicky physical limit switches under the chassis.

The Lippert 909510001 Kwikee Controller is designed to replace failing control units on post-2006 Kwikee steps. It is housed in a fully potted, waterproof casing that protects the delicate microchips from vibrations and water exposure. The unit includes an integrated auto-shutoff safety override that stops the step immediately if it encounters an obstruction like a curb or a pet.

• Equipped with a weatherproof 4-way flat plug
• Monitors motor current to control travel limits automatically
• Compatible with both single and double automatic step configurations
• Includes mounting hardware and heavy-duty grounding wire

Ensure your step motor is compatible with this digital controller style before purchase. Older legacy systems that utilize external limit switches or different wiring plug configurations will require a full harness conversion to use this module. It is the absolute fix for steps that behave erratically, deploy randomly while driving, or refuse to retract when the door is closed.

Magnetic Door Switch – AP Products 013-257 Switch Kit

The magnetic door switch acts as the primary sensor that tells the control module whether the RV screen door is open or closed. When the door opens, the magnet moves away from the switch mounted in the door jamb, completing the circuit and triggering step deployment. Because it is mounted on the door frame, it is subjected to constant slamming, body flexing, and exposure to rain.

The AP Products 013-257 Switch Kit is a highly reliable, normally open (NO) magnetic switch designed for standard RV entryways. The switch housing is made of impact-resistant plastic that mounts flush in the door frame without interfering with the door seal. Its powerful internal magnet ensures reliable switching even if the screen door sags slightly over time.

• Operates as a normally open (NO) contact circuit
• Includes double-sided foam tape and mounting screws
• Encased in a low-profile, weather-resistant plastic housing
• Compatible with most modern Kwikee step control modules

It is critical to confirm whether your step controller requires a normally open (NO) or normally closed (NC) switch, as using the wrong polarity will cause the steps to retract when the door opens and deploy when it closes. This kit is perfect for replacing broken, corroded, or painted-over factory door switches. It is not designed for older step systems that rely on mechanical plunger-style switches.

Pivot Bolt Repair Kit – Lippert 379648 Shoulder Bolts

The scissor-style joints of an RV step mechanism bear the brunt of your weight every time you enter or exit the coach. Constant exposure to road spray strips away lubrication, leading to metal-on-metal friction that wears down the pivot pins. Once these joints loosen, the steps will sag, wobble, and bind, putting excessive structural strain on the gearbox and motor shaft.

The Lippert 379648 Shoulder Bolts kit contains the exact hardened steel shoulder bolts and brass bushings needed to rebuild the main step pivot joints. The unthreaded shoulder portion of these bolts is machined to precise tolerances, allowing the step linkages to pivot smoothly without binding when tightened down. The brass bushings act as sacrificial wear points, protecting the more expensive steel step frame from ovaling out.

• Constructed from high-tensile hardened steel
• Includes self-lubricating brass wear bushings
• Prevents binding by utilizing a specific shoulder depth
• Direct OEM replacement for Kwikee double and triple steps

Do not attempt to replace these specialized shoulder bolts with standard hardware store bolts. Standard bolts lack the unthreaded shoulder, meaning they will either pinch the linkages tight and prevent the steps from moving, or work loose under the vibration of travel. This kit is essential for anyone dealing with a bouncy, wobbly, or misaligned step frame, but it is not necessary if your step joints are tight and free of play.

Replacement Step Spring – JR Products 10605 Spring

Tension springs are critical for stabilizing the step mechanism during transit. They absorb road vibrations and maintain constant tension on the linkage assembly, preventing the steps from rattling, dropping down, or bouncing when driving over rough terrain. Over years of cycling, these heavy-springs stretch, fatigue, or snap due to rust.

The JR Products 10605 Spring is a heavy-duty, zinc-plated replacement tension spring designed to withstand the harsh under-chassis environment. Its tight coils provide consistent tension across the entire travel arc of the steps, ensuring they remain locked tight against the chassis when retracted. The zinc plating offers excellent corrosion protection against road salt and moisture.

• Manufactured from high-tensile spring steel
• Corrosion-resistant zinc plating for longevity
• Overall length: approx. 4.75 inches
• Direct fit for most popular RV step brands

Installing a high-tension spring requires caution and the proper tools, such as a dedicated spring hook or heavy-duty locking pliers, to prevent injury during installation. This spring is the ideal fix for steps that sag slightly when retracted or make a metallic rattling sound while traveling down the highway. It is not the correct solution for a step that fails to deploy due to an electrical or motor failure.

Step Wiring Harness – Lippert 369243 Kwikee 4-Way Plug

The wiring harness delivers 12-volt power and control signals from the RV chassis to the step motor and controller. Positioned underneath the coach, this plug is constantly bombarded by road debris, water, and salt, which quickly leads to green copper corrosion inside the terminals. Once corrosion sets in, electrical resistance increases, causing intermittent step operation or total failure.

The Lippert 369243 Kwikee 4-Way Plug is a pre-wired replacement harness designed to restore clean electrical connectivity. It features a molded, weather-sealed connector plug that locks tightly to prevent moisture and dirt from entering the contact pins. The harness includes color-coded, marine-grade leads that simplify the splicing process into the existing RV wiring loom.

• Features a weatherproof molded 4-way flat plug
• Constructed with marine-grade copper wire
• Color-coded leads match standard RV step wiring colors
• Includes protective outer sleeving for abrasion resistance

When installing this harness, always use adhesive-lined heat-shrink butt connectors to seal the splices. Standard electrical tape or uninsulated crimps will allow moisture to enter, leading to rapid wire rot under the chassis. This harness is a must-have if your current plug has broken locking tabs, loose pins, or green corrosion on the brass terminals.

Clevis Pin Hardware – Lippert 361309 Replacement Pins

The clevis pin is a small but critical hardware component that connects the motorized linkage arm to the main step drive axle. It acts as the final shear point in the mechanical drive train, transferring the rotational force of the gearbox directly to the step frame. If this pin shears or falls out due to a missing cotter pin, the motor will spin freely while the steps remain completely immobile.

The Lippert 361309 Replacement Pins kit provides high-shear-strength steel clevis pins and matching cotter pins designed specifically for Kwikee steps. These pins are machined to exact diameter tolerances to prevent slop in the linkage assembly. Minimizing play at this connection point reduces shock-loading on the gearbox teeth when the motor starts and stops.

• Made from high-shear-strength steel
• Includes matching cotter pins for secure retention
• Precision-machined to eliminate linkage slop
• Standard size fits most Kwikee step linkage configurations

Keeping a spare set of these pins in your RV road kit is highly recommended, as they are easily lost during emergency roadside repairs. This hardware kit is the exact solution for an RV owner whose step motor runs smoothly but fails to move the steps at all. It is not necessary if your current linkage arm is already securely pinned to the drive axle without excessive play.

Waterproof Dry Lube – Boeshield T-9 Rust Preventative

Lubrication is the single most important factor in extending the lifespan of an RV step mechanism. However, using the wrong lubricant can actually accelerate wear; standard wet greases, silicone sprays, and WD-40 act as dirt magnets, trapping road grit and turning it into an abrasive grinding paste. This paste rapidly eats away at the brass bushings and tears up the gear teeth.

Boeshield T-9 Rust Preventative is a specialized dry lubricant developed by Boeing that penetrates deep into step pivot points, dissolves minor corrosion, and dries to a thin, waxy waterproof barrier. Because it dries completely tack-free, it will not attract dust, sand, or road grime. It is highly resistant to being washed away by heavy rain or road spray, providing long-lasting protection.

• Dries to a non-tacky, self-healing wax barrier
• Displaces moisture and protects metal from rust
• Safe for use on paint, plastics, and vinyl trim
• Aerosol can allows for easy under-chassis application

To apply, spray Boeshield T-9 liberally onto all pivot pins, hinges, and the gear plate, then allow it to penetrate for a few minutes before wiping away the excess. This lubricant is an absolute necessity for monthly maintenance on all RV steps to prevent binding and squeaking. It is not designed for heavy internal gearbox lubrication, which requires a dedicated grease during assembly.

Step Override Switch – JR Products 12535 On-Off Switch

The step override switch, usually located on the wall just inside the RV entryway, allows you to keep the steps extended when parked at a campsite. This prevents the steps from cycling open and closed every time the screen door is opened, significantly reducing wear on the motor, gears, and coach battery. When the switch is off, the steps resume their normal automatic operation for travel safety.

The JR Products 12535 On-Off Switch is a heavy-duty, low-profile rocker switch designed to fit standard RV wall cutouts. It features a crisp on-off detent action and internal copper contacts rated for 12V DC RV applications. The switch housing is made of impact-resistant plastic that resists fading and wear from daily use.

• Rated for standard 12-volt DC RV circuits
• Crisp rocker action prevents accidental switching
• Fits standard RV switch bezels and panels
• Features spade terminal connections for quick wiring

This switch operates by cutting the ignition-override or door-switch signal to the controller, telling it to maintain the step’s current position. Ensure your RV’s wiring configuration matches this SPST (Single Pole Single Throw) switch type before installing. It is the perfect replacement for a sticky, intermittent, or broken factory step switch inside your coach door.

Maintaining Your RV Steps to Prevent Future Failures

Preventive maintenance is the key to avoiding a sudden step failure while on the road. At least once a month, spray down the entire step assembly with a high-pressure hose to clear away road salts, mud, and debris from the linkages. Once the assembly is completely dry, apply a high-quality dry lubricant like Boeshield T-9 to every moving joint, hinge, and gear contact point.

Next, inspect the electrical ground connection. The single most common cause of erratic step operation or a “dead” motor is a loose or corroded ground wire. Locate where the main green ground wire from the controller bolts directly to the RV chassis, remove the bolt, clean the metal to a bright shine with sandpaper, and resecure the wire tightly.

Finally, conduct a quick physical alignment check. Inspect the scissor linkages for any signs of twisting, and wiggle the step frame to check for loose shoulder bolts. Catching a sagging joint early prevents off-angle forces from warping the motor shaft or chewing up the gear teeth, saving you from a complete system rebuild down the road.

Taking charge of your RV step repairs keeps your travels smooth and prevents unexpected, frustrating delays on departure day. By swapping out worn linkages, updating weak motors, and keeping the pivot joints lubricated with a quality dry lube, you ensure a safe and sturdy entry point for years to come. Keep these essential repair kits in your onboard toolbox, maintain them regularly, and your steps will deploy reliably at every campsite.