Chances are you ve got a broken trolley carriage.
Taking apart garage door trolley.
If square rail assembly see part number 41c5141 1.
Operator draw bar a k a.
It s a fairly easy part to fix.
Compatible with liftmaster and chamberlain brand garage door openers 1984 thru current.
All you need are some simple household tools and a few garage door parts.
Is your garage door popping or making a loud thud when you are opening or closing it.
Compatible with liftmaster chamberlain chain drive garage door opener models 1040 1045 1046 1050 1055 1056.
Sorry for some reason i d.
Remove the idler wheel and stop bolt for the last section of rail and install them onto the new extension rail.
That is why genie s legacy screw drive garage door openers were made with a carriage assembly that is easy to replace to protect the heavy duty rail system if there is an issue with the door if the screw drive lubrication isn t maintained or if there are installation issues.
Most garage door openers are made for the standard 7 ft.
Watch this video to see how to fix it easily.
For most garage door openers you can get a new trolley carriage for about 25 to 40 depending on the model.
If you have already gotten the extension kit you will need to release the old belt and remove it.