Automatic Garage Door Opener Problem



Question:
Periodically the garage door (Norelco Genie Trac-Drive), operated both by the hard-wired switch and the remote, will go down/up a few inches, then stop and retract a few. If I continually hold the button, I can get it to continue to move, though it sometimes stops after a few feet until I do it again. I've repeatedly lubed all elements, and indeed, it appears that spraying teflon lubricant on the rail/track will remedy it, for a few days/weeks, anyway. But I don't imagine that should be necessary? I also tried white grease on it to last longer, to no avail. This appears to be the issue, but fwiw where the rail attaches to the front of the garage moves a bit when it starts/stops. I thought that might be the problem, but then it's remedied by the lubricating. Any thoughts? TIA!

Answer:
on my sears screw drive gar. door opener. i had to get all the old greas off .. i took the screw mechanizm down and put it in the back yard and sprayed some brake cleaner on it and worked on it with a wire brush and got all the old grease off... spraying some WD-40 on it before this seemed to work for a day or so.. the WD-40 is a solvent and cut the grease and let the old grease lubricate it but the real fix came with removing the old grease that was full of dust/dirt... it then worked like a charm....





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