How To Repair A Garage Door Opener Gear

Test your repair with the garage door disconnected from the opener trolley.

How to repair a garage door opener gear.

The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor. Then install the helical gear assembly. This was a craftsman model 139 53976srt. You ll need to get a replacement gear set.

It can be a complicated repair but not impossible to do yourself. Amazon and other online retailers carry many popular gear kits ranging in price from about 18 to 30. Chain driven garage door openers should have some slack in the chain for optimal performance. When your garage door opener suddenly stops operating properly the cause of the problem is usually pretty simple to understand and the solution is usually quite easy.

Reassemble the motor assembly and place it back in the opener. In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor. If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch. Reattach the chain and tighten it to the proper tension see your owner s manual.

Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door. If the gear and sprocket assembly breaks the motor runs but the door won t move. Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets. If none of the following fixes seem to correct the problem you will need to consult the owner s manual or contact a professional.

Here are the eight most common problems along with the most likely repairs for each. Find the make and model of your garage door opener and then start shopping for a new gear kit. Coat the gear teeth with new grease. You can put the chain back on your automatic garage door opener using a simple adjustment mechanism.

Required tools for this project. This is the plastic gear that comes in direct contact with the worm drive gear on the motor. Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast. This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.

If you are in a bigger hurry you should be able to find a kit at a local garage door opener dealer. It s one of the most common garage door opener repair problems there is.