> <the_andrew_sm...@yahoo.com> wrote:
> > On Aug 20, 9:02 am, unklbob <mcgrisw...@aol.com> wrote:

> > > My GDO is acting like there is something blocking the door--it won't
> > > shut unless I hold the button down.  I am assuming the electric
> > > eyeballs have become misalligned, and I will look up how to re-allign
> > > them, but my query is whether it might be something else?

> > It might be a switch problem or there could be something binding the
> > mechanism.  You might want to try  disconnecting it from the chain
> > (assuming it's chain driven) and opening and closing it by hand.  If
> > it's difficult to move or binds, you should notice.

> > Put it all the way down and give each of the rollers a check (and a
> > squirt of grease while you're there).  I used to have this massive
> > wooden garage door and one of the brackets that holds a roller on was
> > loose and that roller would bind.

> > Get a ladder and look at the sprockets on both ends of the chain.
> > That same massive door had a plastic sprocket on the wall end was
> > destroyed.  I replaced it with a metal sprocket and tada!

> > But, by all means, check the eyes.  I'm not sure how one goes about
> > aligning them.

> > And that's the sum of my garage door expertise.

> > a.

> speaking of greasing the wheels and track - is WD40 acceptable or is
> there some type of specialized grease for this job?