We can help better if we know what type of slide drive system you have.
If you really do not know the type, and or better who made it, then take some pictures of the slide mechanical system and post.
The answers you get without this may not even apply to your slide.
If it happens to be a rack and pinion drive made by Lippert, I can help a good deal on those but no idea if that is what you have.
Give us some more info so we can help better.
John
2005 Ford F350 Super Duty, 4x4; 6.8L V10 with 4.10 RA, 21,000 GCWR, 11,000 GVWR, upgraded 2 1/2" Towbeast Receiver. Hitched with a 1,700# Reese HP WD, HP Dual Cam to a 2004 Sunline Solaris T310R travel trailer.