Reattach the chain and tighten it to the proper tension see your owner s manual.
How to fix a garage door opener gear.
Put a thin layer of the grease included in the kit on the gear.
If not your opener might simply be shot and you ll need a new one.
Use a lubricant that doesn t attract dirt.
Start by unplugging the motor.
If the gears have screwed up teeth you can likely just replace them to solve the problem.
Coat the gear teeth with new grease.
Lay the chain on the garage floor while you complete the repair.
Reassemble the motor assembly and place it back in the opener.
Remove retaining screws from the cover.
Shine the flashlight directly at the gear set.
Silicone spray is a good choice.
With the gears back in place tighten the chain as directed in your owner s manual.
Pull the chain off the motor unit sprocket and out of the chain spreader.
Slide the outer trolley away from the inner trolley.
Test your repair with the garage door disconnected from the opener trolley.
If you have a screw drive opener you ll need to grease several spots along the rail gear at least once or twice a year.
Required tools for this project.
Then install the helical gear assembly.