Originally Posted by Chuckinca
Is the "equalizer" part of the Lippert slide?
Yes. If you look underneath you'll see two "racks" which are the support tubes with gear teeth on the bottom and next to the frame there is a shaft with two pinion gears on it, one engaged in each "rack".
When the single motor (linear actuator) pushes out or pulls in the slide, this equalizer mechanism makes sure the front and rear move the same distance.
Side note, these support tubes need to be kept clean and some good dry lube spray applied as routine maintenance. Ignoring this maintenance will lead to slow slide out movement and eventually sticking that will just yield a ratcheting sound when your slide sticks during extend or retract.