Stromberg Carlson offers both standard-speed and high-speed electric motors for fifth-wheel landing gear, plus replacement switches, drive gearboxes and internal gear repair kits. Start with the original motor or leg part number: a motor replacement and an internal gear repair are different jobs, and the Venture gear kits are not universal.
Stromberg's 2026 parts catalog (PDF) illustrates the current motor, rocker switch, aluminum gearbox and Venture-only gear-repair kits by complete part number. The LG-5/LG-6 dual-power conversion instructions (PDF) show which lead leg, motor, gearbox and switch are supplied in the conversion kit.
| Part | Motor speed | Current specification | Matching kit |
|---|---|---|---|
| LG-142178 | 80 RPM at rated load | 5,000 lb, 30A | LG-217884 (motor and switch) |
| LG-242800 | 150 RPM at rated load | 5,000 lb, 30A | LG-242728 (motor and switch) |
The manufacturer lists the LG-145236 rocker switch separately with an IP66 rating. Its exterior appearance may vary between production runs. Confirm your motor, control wiring, gearbox and landing-gear design rather than installing a higher-speed motor based solely on its RPM.
Standard-speed 12V landing-gear replacement motor. Stromberg's current specification is 5,000 lb load, 30A and 80 RPM; the store product title uses an older 5,500 lb wording, so rely on the exact motor number when comparing.
View LG-142178 part
High-speed 12V motor, rated by Stromberg at 5,000 lb, 30A and 150 RPM. Match the existing motor mounting, gearing and wiring before replacing an earlier high-speed drive.
View LG-242800 part
Water-resistant landing-gear rocker switch with wiring. It is the separately numbered switch used in the motor-and-switch packages, not a replacement motor.
View LG-145236 part
Drive gearbox for compatible lead-leg installations. This component transfers motor or crank torque to the lead leg and cross shaft.
View LG-179015 part
Replacement internal gear components for a Venture lead leg only. Stromberg lists a 12-tooth small gear and a 16-tooth large gear in this repair family.
View LG-146059 part
Matching repair kit for the Venture follow leg, not for the lead-leg side. Check original leg manufacturer and gear teeth before ordering.
View LG-146060 part
Manual emergency crank for the factory landing-gear gearbox. Compare the crank connection on your installed system.
View LG-119226 partVenture-only internal gear kit for the motor/crank side of the landing gear. Do not use it just because the landing gear has a Stromberg-branded replacement motor.
Venture-only kit for the cross-shaft-driven opposite leg. Its components are distinct from the lead-leg kit. Stromberg identifies 12-tooth small and 16-tooth large gears in the Venture repair series.
If a motor fails to operate, first inspect the 12V battery, switch, wire connections and grounding. If the motor turns but neither leg moves correctly, inspect the external LG-179015 gearbox, cross shaft and coupling before assuming the internal jack gears have failed. A twisted shaft, binding leg or bent mounting can damage the drive. Follow the factory troubleshooting and service instructions, and independently support the trailer before removing landing-gear components.
For 29½-inch versus 33½-inch lead/follow legs, feet, drop pins and mounting brackets, see the Stromberg Carlson landing-gear leg and foot guide. The LG-5 dual-power kit uses the 29½-inch LG-179013 lead leg; LG-6 uses the 33½-inch LG-177202 lead leg, with matching gearbox, motor and switch.
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