Garage Door Opened Keeps Stripping Gear

If you own a chain drive garage door opener manufactured by chamberlain liftmaster sears craftsman chamberlain etc it is pretty much guaranteed to have a stripped gear someday.

Garage door opened keeps stripping gear.

This repair guide and video show step by step how to replace the drive and worm gears in a chain drive garage door opener. Replace any broken garage door opener hardware that could allow excessive vibration. With the gears back in place tighten the chain as directed in your owner s manual. You can tell it has happened because the drive chain doesn t move but you can hear the motor going.

Now you need to install the new helical gear assembly. 60 minutes or less. If your chain drive garage door opener motor runs but the garage door won t move the drive and worm gears might be stripped or worn. I ll plan to pick some up and go at it tomorrow night after work.

The limits tell the opener how far you want it to open and how far you want it to travel when it. I opened up the door opener and the main gear and screw gear both look ok. It seemed the noise got a little lower. Under normal conditions a new gear will not strip but in the right ones like this they can.

These pulleys are the number one cause of a garage door becoming really unbalanced and a very shaky operation. After you are done replacing the gear and sprocket you will want to test and adjust the limits. Replace the cover on the garage door opener plug it back in and start enjoying your now functioning garage door opener. If you correct the alignment tighten the hardware.

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. Put a thin layer of the grease included in the kit on the gear. The opener was using all its force to turn the gears and the gears were put in a bind because of the position of the door in reference to the opener. There was a glob of the white grease beowulff mentioned that was on the side of the main gear so i spread that with my finger onto the worm gear and ran the opener open and closed again without the door attached.

3 the worm gear drive shaft on the operator may be bent causing gears to wear out extremely fast also very rare but i have seen it happen.