Liftmaster Chain Drive Not Moving

I put a lot of wd40 into drive gear and chain read more.

Liftmaster chain drive not moving.

I ve not worked on garage doors before but i have a degree in computer electrical engineering. Motor starts but drive doesn t move. Sometimes homeowners will find that their automatic garage door opener runs but the door doesn t move. The chain and door connector assembly haven t budged since.

One garage door malfunction that is very frustrating is when it will not open. Motor unit assembly parts rail assembly parts and installation parts for liftmaster chain drive garage door opener models 3245 3245m 3255 3255m 3255 2m. Both were something along the lines of either there is no power or the gears are destroyed. If the cord has accidentally or purposely been pulled the automatic door opener will not work until the chain is re engaged.

Actually there are many more answers. This process varies by manufacturer and model but many openers can be re engaged by pulling the emergency cord a second time. 1 check to make sure the opener is getting power. There are a number of possible causes.

If the motor hums but the chain doesn t move that indicates a problem with the motor. Using your emergency release how to release and then re engage your chain drive opener. My old 15 years liftmaster chain garage door opener is making noise at motor driver gear part when the chain is going up with or without door engaged. I disconnected chain and tested without chain enabled read more.

What could be causing my garage door opener chain to not move. The chain drive is not lfting the door. They can hear the motor going but the door itself is not opening. Home owners say that they can hear the motor running but the opener simply will not operate the door.

Automatic garage door opener runs but door doesn t move. As of today 2017 11 08 there were two answers. This causes the motor to run for an extensive period of time before it seems to timeout and give up. This is frustrating especially if you re trying to get your car out of the garage.

However the chain has completely stopped moving and by extension so has the door. It is best to troubleshoot the issue to determine the appropriate solution. This question is from quora. I own a liftmaster professional 1 3 hp chain drive garag door opener.