Gather the needed tools: replacement rollers, winding bars, locking pliers, wrench set, screwdriver, and ladder
Close the garage door fully
Disconnect the garage door opener
Unplug the opener if needed
Clamp locking pliers on the track above one of the bottom rollers to keep the door from moving
Open the door slightly if needed to relieve tension on the rollers being replaced
Remove the hinge bolts holding the roller bracket in place
Slide the old roller out of the hinge
Insert the new roller into the hinge
Reinstall and tighten the hinge bolts
Repeat for each roller one at a time
Replace rollers one section at a time to keep the door supported
Check that each roller spins freely
Inspect the tracks for dirt, bends, or damage
Clean the tracks if needed
Remove the locking pliers
Reconnect the garage door opener
Test the door by opening and closing it several times
Tighten any loose hardware after testing