There are many brands of sliding glass doors. All of them use different guide wheels. What tends to happen is the guide wheels get stuck and stop spinning. When they stop spinning they get a flat spot and stop rolling or clunk when they roll. Its possible for them to come off the track too.
Removing the door and removing the guide wheel assembly, then replacing them should fix the problem. Its possible the guide wheels are just out of adjustment too. My sliding glass door has 2 holes at the bottom of the door for adjusting the guide wheels up and down to lift the door off the guide rail and make them hold the weight of the door. When the wheels carry the weight of the door and they aren't flat and their bearings are good, the door should slide easily. The wheel adjustment should also set the position of the door latch.
If you don't know the brand of door you have, the only way to get the right replacements is to remove them and match them up at the hardware store.
Be careful, you have to remove the moving door section to get to the wheels. It can be pretty heavy and awkward. Its too easy for it to get out of control when moving or handling it. Be sure you have somewhere stable and secure to place the door to get to the wheels. My door releases by removing a top rail so the door will tilt out. They all probably are different. You may have to study it closely to figure it out.
Here's a link to Home Depot that shows a bunch of the door wheels they carry. I think the link is to Home Depot near me but it shouldn't matter much.
http://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=patio%20door%20wheels&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=SEARCH+ALL
Steve
On 6/9/2012 9:21 AM, Bill Z wrote:
Anyone know what can be used to make a heavy sliding door
glide over the "aluminum" tract more easily ?
I cleaned it all up and then used some wd40 on it
but that did not help much.
WD40 works great for a few days until it apparently
evaporates (?)
Now it sometimes glides ok now but not consistently,
which is also puzzling to me. When you lubricate
something shouldn't it work, or not work, consistently ?
Bill Z
Delaware County, PA
http://groups.yahoo.com/group/WingedFriends/
http://groups.yahoo.com/group/Dogpark-National-News/
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