linear actuator not moving

[ringram]

I ended up making one wiht fiberglass epoxy, thickened with some quartz microspheres. I cleaned up the acme rod, put on some mold release, and then applied the thickened epoxy. I let it cure, then removed the "nut". I then cleaned it up and epoxyed it into the tube. The hardest part was making sure is was lined up straight.

One other thing. The fiberglass nut was too close in tolerence. It was too tight. This could be loosened up a bit by putting valve grinding compound on the rod and running the nut up and down for a bit to 'grind' down the threads a bit.

Bottom line, it's back together and working fine.

 

[SatPhreak]

Kudos on making a new nut! now you can watch tv again.

 

[SatGuyPR]

Thanks all for your helpful hints... and links!

Have two dead 18" actuators...
>Von Weise
>SuperJack

Will repair them someday...
good weekend proyect...

 

[pandrewb]

Most likely the Acme nut is stripped in the arm. A common problem. But, unfortunately Von Weiss won't sell you just the nut. Through alot of hassle I had some made. Changing it out isn't difficult. If you want to buy one from me let me know.