Garage Door Chain Off Sprocket

2 move the ladder to the outer end of the chain arm near the garage door.

Garage door chain off sprocket.

Another common cause for a loose chain could be the front sprocket breaking. Sprocket is at the end of the opener rail closest to the garage door opening. This will release the door from the garage door opener. To reinstall the chain on the sprocket first with the door closed pull the rope hanging down from the trolley on the t bar.

This will loosen the chain and give you more slack to place the chain back over the sprockets. Loosen the inside nut and back it off 6 8 turns back the outside nut off 5 6 turns this will give you some slack in the chain. A new front sprocket costs. When the garage door goes off track it can be a serious inconvenience.

There should be one or two nuts at each side of the anchor. Drill through the sprocket and shaft and install a bolt hardened bolt if needed through the shaft. While calibrating the safety reverse on one of my garage door openers the chain this is a chain drive opener hopped off of the sprocket on the garage door opener. There are lots of tutorials on the internet for our to put the chain back on but all of them assume that there is some sort of tension adjuster with two lock nuts on it my chain.

Slide the outer trolley away from the inner trolley. Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley. Can be used on tube shafts. This sprocket is typically used on a soled keyed garage door shaft.

Loosen the nut s facing the door five full turns with a 7 16 inch wrench. After close examination we found the chain was off track. When used on tube shafts it is advisable to fill the tube shaft with a steel or wood dowel in the area of the sprocket and through bolt the sprocket. The chain is attached to a threaded rod that is attached to the trolley.

Turn the nut s facing the opener motor one half turn clockwise by hand. Pull the chain off the motor unit sprocket and out of the chain spreader. Around this sprocket as well as the gear and sprocket at the motor. Garage door didn t open in the morning.

Use a screwdriver to remove the snap on cover where the chain wraps around the sprocket at the upper side of the motor.