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Posted by Tony Hwang on January 31, 2007, 9:24 pm
DerbyDad03 wrote:
>
>>I have a Craftsman 1/2 hp screw-drive garage door opener. It was
>>professionally installed in 2003 on a new garage door. Never had a
>>bit of trouble with it (until now).
>>
>>In the middle of January, my wife said "the garage door isn't closing
>>all the way". Sure enough, it stopped about 3-4 inches short of
>>closing. And, the arm mechanism would bang into the actual drive
>>housing when it was fully opened.
>>
>>"Ah, simple adjustment" I thought. I grabbed a screwdriver and
>>adjusted the travel limits (lower and upper) and it worked fine. For
>>about two weeks.
>>
>>I noticed was, again, not closing completely and banging into the
>>drive housing when opened. I adjusted the limits a second time.
>>Looked good to me.
>>
>>Three days later... I notice it's not closing all the way <grrrrr>...
>>
>>The problem is happening more frequently. Obviously, my feeble
>>attempts at adjusting the limits work only temporarily.
>>
>>Could the opening arm be consistently 'skipping' on the screw drive?
>>What else could cause the repeating adjustment problems? Anything I
>>should check before I just call someone to take a look at it?
>>
>>Thanks!
>
>
> Mark the position of your limit screws and see if vibration is causing
> them to turn on their own.
>
> Well, I guess they wouldn't really be turning "on their own" if
> vibration was causing them to turn, but you know what I mean.
> Actually, if they WERE turning on their own that would be pretty
> scary! <g>
>
Hi,
Switches are spring loaded. Some times spring breaks.
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