Reinstall the garage door opener.
How to replace belt on liftmaster garage door opener.
Explore liftmaster garage door opener belt kits.
The door needs lubrication.
For example you ll want to match your replacement belt to the right model number for a trolley clip belt connector or pulley bracket to ensure a fast easy install diy job.
The track is not aligned properly.
The batteries in the remote control need to be replaced.
The garage door s path may be blocked.
This video from sears partsdirect shows how to replace the belt on a belt drive garage door opener.
The liftmaster 41b3869 1 garage door opener belt drive trolley sold by north shore commercial door replaces the whole opener and is easy to install.
Take the garage door opener down.
Constant rubbing of the rail beam along the side of the trolley will eventually wear away one side of the trolley.
Install the new belt.
We have rail assemblies motors and replacement circuit boards for your model 3500 liftmaster belt drive garage door opener.
Belt drive garage door opener replace a garage door opener drive belt garage door opener liftmaster 41a3589 3 full belt assembly.
Find a replacement garage door opener belt for a 7 foot tall garage door or a garage door that is 8 feet or 10 feet high.
Find replacement belts trolley kits tensioners sprockets pulley brackets idlers caps covers and more.
Liftmaster garage door openers troubleshooting support get the liftmaster garage door support you need from chamberlain group.
Use a step ladder to access the garage door opener s power cord and motor unit.
Located along the rail the belt connects to the trolley.
The safety sensors are out of alignment.
Common reasons your garage door opener may not be working properly.
Unplug the garage door opener.
Whether you have a belt drive chain drive or wall mount model find helpful resources manuals videos and more to help you diagnose and fix the problem.