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Lippert 118815 28:1 Toaster Motor for Electric Single Rail Above Floor Slide-Out Systems

Lippert 118815 28:1 toaster motor for Electric Single Rail Above Floor RV slide-out systems, 12V DC compact box-form drive unit
Lippert 28:1 Toaster Motor for Electric Single Rail Above Floor Slide-Outs
 
: $671.96
Part Number: 118815
Manufacturer: Lippert
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Lippert 28:1 Gear Ratio 12V DC Lippert 118815 -- 28:1 Toaster Motor for Electric Single Rail Above Floor Slide-Outs

Direct-replacement drive motor for Lippert Electric Single Rail Above Floor slide-out systems. The compact "toaster" box-form housing tucks out of sight beneath your sofa or bed platform, restoring reliable in-and-out travel without modifying your existing rail hardware or wiring harness.

The Right Motor for Single Rail Above Floor Slide Rooms

Lippert's Electric Single Rail Above Floor system is widely used under fold-out sofas, jackknife sofas, and bed slides in mid-size to large travel trailers and fifth wheels. Unlike under-floor or rack-and-pinion systems, the single-rail above-floor design locates the drive motor inside the slide room, sitting on the floor under the furniture piece. That compact enclosure is why Lippert technicians call it the "toaster" -- the motor's boxy profile resembles one.

Over time, the motor brushes wear, internal gearboxes strip, or the thermal protection trips and the unit fails to reset. Part number 118815 is the genuine Lippert OEM replacement motor assembly with the correct 28:1 gear ratio to match the torque and travel-speed profile of the original system. Swapping the motor restores full electric slide function without replacing rails, slide toppers, or the entire drive assembly.

28:1 Gear Ratio

Matched to the original torque spec -- not too fast, not too slow. Ensures smooth, controlled in-and-out travel.

12V DC Operation

Runs directly off the RV house battery circuit. No inverter or shore power required for slide operation.

Box-Form Housing

Low-profile "toaster" enclosure sits flat under sofa or bed platform -- same footprint as the original unit it replaces.

Genuine Lippert OEM

Sourced directly from Lippert Components. Part number 118815 matches factory fitment for correct harness plug and mounting.

What Is the Electric Single Rail Above Floor System?

Lippert's Electric Single Rail Above Floor (sometimes called "SRAF") slide mechanism uses a single horizontal rail mounted above the floor of the slide room, with the toaster motor driving a rack or worm-gear along that rail to push and retract the slide box. Because the rail and motor are above the floor deck, there is no under-chassis mechanism to reach for service -- all service points are accessible from inside the coach with the furniture moved.

Common applications include:

  • Jackknife sofa slide-outs in travel trailers
  • Tri-fold sofa and loveseat slide rooms
  • Bed platform slides in larger fifth wheels
  • Dinette and entertainment-center slide rooms built on the single-rail design

Identifying Your System Before Ordering

Confirm your slide is an "Electric Single Rail Above Floor" type before ordering. Look under the sofa or bed for a rectangular box-form motor mounted to a horizontal rail inside the slide room. If your slide motor is located under the floor of the coach or uses a rack-and-pinion with a separate gearbox visible from outside, you have a different system and need a different part. The Lippert service tag on the motor or the coach build sheet will list the slide mechanism type.

Installation Overview

Replacing the toaster motor is typically a two-person job. Access requires removing or tipping the sofa or mattress platform to expose the motor. The motor mounts to the rail bracket with bolts and connects to the coach wiring via a dedicated plug. The 28:1 gear ratio of 118815 matches the original so no re-calibration of the slide controller is normally required after swapping the motor.

  • Retract the slide fully before beginning -- never work on the mechanism with the slide extended if avoidable
  • Disconnect shore power and engage the battery disconnect before removing the motor plug
  • Note the orientation of the motor before unbolting -- reinstall in the same orientation
  • After installation, cycle the slide in and out slowly once to verify travel and listen for binding

Wiring Harness and Plug Compatibility

This motor uses the standard Lippert SRAF harness connector. In most coaches built with this system, the factory wiring harness plugs directly into the replacement motor without cutting or splicing. If your coach has an aftermarket wiring repair, verify the plug type before ordering.

Maintenance Tips to Extend Motor Life

  • Inspect and lubricate the rail and worm gear annually with a lithium-based grease -- a dry rail forces the motor to work harder and shortens brush life
  • Check that the slide seals are not binding or dragging, which increases load on the motor
  • Verify battery voltage is above 12.2V before operating the slide -- low voltage causes high current draw and overheating
  • Do not manually push or pull a powered slide -- always use the switch to prevent stripping the internal gearbox

Part Identification

ManufacturerLippert Components
Part Number118815
SKU045-118815
UPC848150065933
Product FamilyElectric Single Rail Above Floor Slide-Out Drive

Motor Specifications

Voltage12V DC
Gear Ratio28:1
Motor Form FactorBox-form "toaster" housing
ApplicationElectric Single Rail Above Floor slide-out systems

Compatibility

Slide System TypeElectric Single Rail Above Floor (SRAF)
Typical Furniture TypesJackknife sofa, tri-fold sofa, bed platform, dinette
Coach TypesTravel trailers, fifth wheels with Lippert SRAF slide rooms
Replaces OEM MotorLippert 118815 (same part -- direct OEM replacement)

What Is Included

IncludedToaster motor assembly (1)
Not IncludedMounting hardware, wiring harness, slide rail, slide controller

Electrical

Operating Voltage12V DC
Circuit TypeDirect battery-fed via slide controller
ConnectorLippert SRAF standard harness plug (no splicing required for factory harness)

Important Information

  • Verify your slide system is the Electric Single Rail Above Floor type before ordering -- other Lippert slide systems use different motors and gear ratios.
  • Always fully retract the slide and disconnect battery power before beginning motor removal or installation.
  • Do not operate the slide if the motor shows signs of overheating, burning smell, or abnormal noise -- continued operation can damage the rail and slide box.
  • Mounting hardware is not included -- retain existing fasteners from the original motor for reinstallation.
  • Low house battery voltage (below 12.0V) significantly increases current draw and can cause premature motor failure -- verify battery health before placing the coach back in service.
  • This is an OEM Lippert part. Aftermarket substitutes with similar appearance may not share the same gear ratio or connector, resulting in incorrect slide speed or harness incompatibility.


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