Clean out the drive unit. Someone said he used an air compressor and just blew out the debris. While I enjoyed the opportunity to use MY compressor and air jet fixture, it was of little use. The all of the steel filings and nylon gear grindings had mixed with the old grease and dirt that's been building up for year.
The only thing that worked was an old toothbrush and Q-tips. A real pain, too, as there was little room to get at stuff. That took some time, but I got the job done.
Drop in the new sprocket/gear assembly. I took the top of the one guy on the vid and used my drill/screws to pre-thread the 3 attachment holes in the lid of the assembly. That tip alone was worth watching his vid. That done I dropped in the assembly, lined up the holes and screwed it into place. I finished the part off by securing a new nylon bushing/gear to the bottom of the shaft and lock it in with the new pin.
Not too bad to this point. But the next one took some time.
Re-attach the chain. This was the hardest and dirtiest of the lot. The chain was heavy, awkward and totally uncooperative. I struggled with it for nearly 15 minutes. Eventually I unscrewed the chain adjustment to the loosest point possible, just shy of dropping off, and was able to FINALLY get the chain around the sprockets. *pant* I needed a little sit-down after that wrestling match.
Eventually I got the chain back to the tension it was before (more or less).
Grease grease grease. The vid made greasing look easy. Again, it was not. (A caveat here - the LiftMaster that he was fixing was way newer than mine and was made a little differently - oh, not in the basics, but in the access and placement of some parts. That's why I was having such difficulty in some steps.) He made greasing look easy because he had full access to the drive gear. I only had partial access, so had to resort to piling grease on the flat of a screwdriver and pushing it into the back of the gear like frosting a cake. Awkward, but doable. He advised using all the grease in the tube. Just not possible here, so saved the other half of the grease for future lubes.
Plug in the unit, step back, cross my fingers and -- push the button. Push the button. PUSH THE BUTTON YOU WUSS! Okay okay. I pushed the button.
Rumble rumble rumble rumble. The chain ran to the 'down' position and the grabber thingy on the chain clicked into place on the (still closed) garage door. So far, so good.
Push the button again. Go ahead. What could possibly go wrong? I pushed it.
|Car back into garage just before next rainstorm|
I closed up the unit. It needs 2 light bulbs, now. The old bulbs burned out and all I have are those squirrelly fluorescents and they don't work in the opener. But the security laser still works. (I put something in the path of the door and the unit stopped, not letting the door down. And, I think I'm going to have to check into that groaning noise when the door goes down. It's always sumthin'....
Bottom line - it's fixed (knock wood)! A scant $27.50 for the part and about *mumble* hours of time (research, figuring things out, finding tools, making do and just feeling my way). LOL
There. I fixed a garage door opener. Ha! Just one more thing I can scratch off that bucket list. *heh* Time for a celebratory beverage, no? :-D (And, honestly, I've got to load up this bucket list with better stuff. Fix a garage door opener? I think I need to adjust my meds, for crying out loud!)
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