PALOMINO PUMA 25RLSS - Slide-Out Motor Replacement

PALOMINO PUMA 25RLSS – Slide-Out Motor Replacement

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Complete repair guide for the PALOMINO PUMA 25RLSS – Slide-Out Motor Replacement.

Parts & Tools You’ll Need

Step 1: Diagnose the Motor Failure and Prepare

Begin by testing the slide-out mechanism from inside the RV using the control panel—listen for any clicking, grinding, or complete silence, which indicates motor failure versus electrical issues. Disconnect the RV from all power sources (both 120V shore power and battery), then locate the slide-out motor assembly mounted on the frame beneath the bedroom slide-out room. Visually inspect the motor housing for cracks, corrosion, or water damage, and check all visible electrical connectors for corroded terminals or loose wiring. Document the current motor model and part number before proceeding, as this will help confirm compatibility with the replacement Lippert 12V Slide-Out Motor Assembly or MOR/ryde Slide-Out Gear Motor Kit.

Step 2: Disconnect Electrical Connectors and Remove Power

Locate the main electrical connector harness leading to the slide-out motor, typically found near the motor housing or routed through the frame. Disconnect the primary power connector by gently releasing the locking tabs on either side—do not yank the wires, as this can damage the pins inside. Using dielectric grease on a small brush, clean any corrosion from the connector pins on both the harness and the new motor assembly, then set the harness aside with tape to prevent accidental reconnection. Take a photo of the connector orientation before disconnection to ensure proper reinstallation, or use a marker to label the positive and negative leads if your RV uses non-standard connectors.

Step 3: Remove Mounting Bolts and Slide-Out Frame Attachment

Using your Socket and Allen Key Set, locate and remove all mounting bolts securing the motor assembly to the frame—typically 4-6 bolts ranging from 10mm to 12mm in diameter. Loosen each bolt gradually in a cross-pattern (similar to wheel removal) to prevent binding, and torque each bolt back out to approximately 15-20 ft-lbs before full removal. Note the position of any spacers, shims, or brackets beneath the motor, as these must be transferred to the new assembly to maintain proper alignment and motor-to-gear engagement. Have an assistant support the motor assembly during final bolt removal to prevent it from dropping, which could damage the surrounding cabinetry or create a safety hazard.

Step 4: Inspect Gear Rack and Transfer Mounting Hardware

With the old motor removed, examine the exposed gear rack for visible damage, missing teeth, or excessive wear—a damaged rack will require replacement and should be addressed before installing the new motor. Clean the entire gear rack surface with a dry cloth, removing any accumulated dust, debris, or old lubricant that may have deteriorated. Transfer all metal brackets, spacers, and shims from the old motor housing to the new Lippert or MOR/ryde assembly, ensuring each piece sits flush against the housing without gaps. Apply a fresh coating of Gear Rack Lubricant (white grease) to the full length of the gear teeth using a brush or applicator, distributing it evenly to ensure smooth engagement with the new motor’s pinion gear.

Step 5: Install New Motor Assembly and Align Pinion Gear

Carefully position the new motor assembly into the mounting location, aligning the pinion gear with the center of the gear rack’s tooth pattern—proper engagement is critical for smooth operation and longevity. Insert all mounting bolts by hand first, then use your socket set to tighten them in a cross-pattern, gradually bringing each bolt to 15-20 ft-lbs torque to ensure even pressure distribution. Before final tightening, manually rotate the slide-out room slightly (with power still disconnected) to verify the gear teeth mesh smoothly without binding or grinding sounds. Once satisfied with alignment, bring all bolts to final torque specification and double-check that the motor housing sits securely without any movement or gaps.

Step 6: Reconnect Electrical Connectors and Test Limit Switch

Apply a light coating of Electrical Connector Dielectric Grease to the mating connector pins on both the new motor and the harness to prevent future corrosion. Insert the main power connector firmly into the motor assembly until you hear or feel the locking tabs snap into place, confirming a secure connection. Locate the Slide-Out Limit Switch (position sensor) mounted on the frame and verify its mounting bolts are tight—this sensor tells the motor when to stop, so loose mounting can cause the slide-out to overshoot or not fully extend. If you need to replace the limit switch, disconnect its connector, remove the mounting bolts, and install the new sensor in the exact same position to maintain proper travel distance calibration.

Step 7: Perform Full Operational Testing and Final Verification

Reconnect the RV to shore power and the battery, then test the slide-out room using the control panel from inside the living area—listen for smooth motor operation without grinding or abnormal sounds. Extend the slide-out room fully, pausing about halfway to verify the motor maintains smooth, consistent power delivery, then fully retract it to its stored position and confirm the limit switch stops it cleanly. Repeat this cycle 3-5 times to ensure the motor doesn’t overheat (feel the housing after operation; it should be warm but not too hot to touch for more than 5 seconds). Finally, inspect the Slide-Out Room Travel Safety Bar to ensure it’s properly secured in its latch position, check for any water leaks around the motor mounting area, and document the new motor’s model number in your maintenance records for future reference.