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Garage door problem: I have to repeatedly adjust the travel limits.

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Garage door problem: I have to repeatedly adjust the travel limits. CsB 01-31-2007
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Posted by Bob M. on January 31, 2007, 8:11 pm



>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).


Check if the door is properly balanced. Disconnect it from the opener, and
pull it half-way down. Let go. Does it stay there? If so, it's properly
balanced. If not, the springs require adjustment, best done by garage door
techs.

My guess is that it is unbalanced & wants to go up, so the opener has to
push harder to get it to go down.

Or, do all the rollers roll properly in the track? Maybe some are dragging.



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Posted by CsB on February 1, 2007, 7:44 am


I'll check this tonight and report back. Thank you.

> Disconnect it from the opener, and
> pull it half-way down. Let go. Does it stay there?
>
> My guess is that it is unbalanced & wants to go up, so the opener has to
> push harder to get it to go down.
>
> Or, do all the rollers roll properly in the track? Maybe some are dragging.



Posted by DerbyDad03 on January 31, 2007, 8:37 pm


> 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>


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.

Posted by CsB on February 1, 2007, 7:46 am


I understand. I wondered this, also. The limit screws are fairly
stiff and I need to adjust them almost the exact amount of turns each
time (2+ turns). I'll look more closely and mark their positions to
see if vibrations are causing the trouble.

> Mark the position of your limit screws and see if vibration is causing
> them to turn on their own.



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