My sectional garage door doesn't seem to be aligned correctly. The springs are at the rear, like this:
There's a scraping noise when operating that seems to be coming from the left cable drum. The electric operator also fails to close it sometime and reports that there's an obstruction. It's mostly fine to close by hand, but I can feel an obstruction too at some point.
Here are a few things I'm not sure of:
- The spring on the left seems to be a lot smaller than the one on the right. The manual says they should be the same spring, so maybe they are and one is just compressed more. The springs haven't been touched since the door was fitted, and I believe they're clamped to the bar so I'm not really sure how this is possible:
- The cable drum on the left is very close the frame, and on the right it looks ok. When the door is open the cable on the left is pressed against the metalwork. I think this is rubbing, and I also think the drum itself is rubbing on the frame next to it:
- When open, the cable rubs on the metalwork. It looks like the whole drum needs shifting left:
My guess is that the springs aren't aligned, but I'm not sure. My drum looks a lot more complex than others I've looked up in help videos online. There's this extra step:
I'm not really sure what that's doing. Perhaps it's locking off the drum from the spring to allow spring adjustments? I'm really not sure, and I'm reluctant to mess around with the spring under tension without understanding what it's doing.
I've contacted a local company to try and fix it, but so far they've been very unreliable in responding.
Does anyone have any suggestions or pointers?