Screwed up. Also deceided won’t ever bother buying anything from sears again.
New shed, pulled a Sears garage door opener that was in a free pile at a garage sale from my stash, checked it out on the ground, everything seemed fine. Did not bother opening it up to look.
Put it up. Fine going down, trashed gear sound going up.
Nylon gear trashed. OK, $20 part I assume, but “Sorry, this part is no longer available” 139.664983
So, gonna have to spend 2 hours cobbing out a drive gear (including needing to make a cutter), could pull another old opener from the stash, but this one is in place and I do like machining. A brass gear will last forever vs. the cheap sears cast nylon gear anyway (said the fox jumping for the grapes) <G>
Replies
When I googled the number up came 170 hits. Have you tried the internet? Aftermarket suppliers often have parts available long after the OEM no longer maintains stock. If you could determine the part number of the gear itself from the manual and search on it, you might find it.
Brass might seem better (especially to a machinist), however, it is much more expensive to produce, not only from the material cost but because it would require machining wereas nylon can be cast to finished size. Nylon, if kept clean and not exposed to extreme stress such as stalling, can last a considerable length of time and run quieter.
add "gear" to the # and you get only 13 hits..... 3 of which have gears for sale, all of which have pix with many more teeth than the 24.....etc.......
If you want to search more and find one for me, would appreciate it... <G>
JH,Burden has some, not sure exactly what you are looking for. The search function sucks.https://www.surpluscenter.com/sort.asp?UID=2009052717350473&catname=byKeyword=yes&search=1-2742-24KK
Might this be it?
http://www.shopwiki.com/_Sears+Craftsman+LiftMaster+Chamberlain+Gear+%26+Sprocket+Assembly+Kit+41C4220A
Hound,
What do you expect from a company that puts PLASTIC wingnuts on power equipment?
I still swear by their hand tools. Nothing else.
Mike
And plastic wheels on their tablesaw blade adjusters, even when their saws were better than now. I had to buy a set of cheap metal wheels to replace my even cheaper ones on my contractor saw.
yeah, anything sears puts a motor or an engine on is junk
"I still swear by their hand tools. Nothing else."In other words, you swear by their hand tools, and you swear at everything else they sell.;o)...Tact is the art of making a point without making an enemy..You are always welcome at Quittintime
Screwed up. Also deceided won't ever bother buying anything from sears again.
New shed, pulled a Sears garage door opener that was in a free pile at a garage sale from my stash, checked it out on the ground, everything seemed fine
Fess up Art, when was the last time you actually bought something from Sears?
It was free, it was broken, so you gotta fix it.........
Joe H
when was the last time you actually bought something from Sears
dang, got caught - but do remember it well, was last time they had a surplus store here, 1994, bought a BIG set of metric sockets, something like 200 metric size parts, for $89.
DW has bought stuff there though since. Have had her take back some tools for replacement too--do dat count <G>
Fess up... you wouldn't PAY for the gear anyway when you can make it.
I'm not sure if I'm horrified at the premise or in awe... OK, maybe a little of both ;)
PaulB
http://www.makeabettertomorrow.com
http://www.finecontracting.com
All Chamberlains, Liftmaster, and Sears are made by Chamberlain and all use the same parts.
If this is a chain drive and it was older than 1979 the only gear was the sprocket that drove the chain.
The speed reduction was a belt and pulleys.
After 1984 they used the same plastic gear set so they are still available.
http://www.aaaremotes.com/gearsprocask.html
http://www.aaaremotes.com/lifgearkit.html
Don't know what the design was between 79 and 84.
William the Geezer, the sequel to Billy the Kid - Shoe
Thanks Bill, had not found the 2nd link you had, that looks like the gear, esp since it has 24 teeth. The head I have has a metal worm though that looks like a longer pitch. I must have a 79-84 version unit.
The $25 price is kinda an 'ouch' though if it is slightly different, in keeping with Paul's comment. <G>
Besides, took the easy way out, rummaged thru another pile of stuff and found one of the older sears belt drive units behind some older squirrel cage blowers, just going to swap power heads. The belt drive must be older than '79 then, huh?
I built my house in 79. And it had a Liftmaster with the belt reductions drive and used a Amphrite (sp?) thermal time delay "relay" to control the light. And a separate receiver.I don't know how old the design was at that time..
William the Geezer, the sequel to Billy the Kid - Shoe
Thank You for a memory....
Your gear making reminds me of a family story
One of my sisters high school friends scored one of those rare "finds". An old car in the proverbial old widow's garage, car had been sitting since sometime in the 1930's, in pieces. Kid got it for $250.
He had no clue at all who manufactured it when he picked it up.
It was a Falcon-Knight, made in Toledo Ohio for about 2 years in 1927/28. Falcon was the coach , Knight made the engine.
http://clubs.hemmings.com/clubsites/wokr/gallery/fk_hist.htm
http://www.autogallery.org.ru/k/fa/27falconKnightsedan6cyl3spd_Volocars.jpg
http://www.autogallery.org.ru/k/f/27falcon-Knight6cylslevevalve_HMN.jpg
The engine had a thick felt gear to drive the distributor and that was all torn up. He came to my dad for help on the problem and my old man machined a new felt gear for the kid. Gear felt was about as thick as the felt on a piano key is.
Car was truly a rare car even in those days, Dad had to research the engine at an old car museum in Cleveland to figure out just what was needed.
I still remember the day that car showed up in our driveway and the kid took my old man out for a spin in his restored ride. Dad looked like the cat that ate the canary, couldn't have been prouder of helping make the old rig run again.
Got me smiling here at remembering it all.
so are you going to do a photo essay as you build this gear?
I've seen a lot of machining; lots of cool stuff on aircraft but never seen a gear being made.
I had the same issue - went on Internet and bought 2 as I figured the other one would go too - mine were $60 each -- its not the money I mind it is the time to take the track apart and get the new one in -- probably a good hour but like most things done once or twice you do it in half the time the 3rd time - All the Best Dudley