Can be used on tube shafts.
Garage door chain off sprocket.
This sprocket is typically used on a soled keyed garage door shaft.
Pull the chain off the motor unit sprocket and out of the chain spreader.
Sprocket is at the end of the opener rail closest to the garage door opening.
There should be one or two nuts at each side of the anchor.
This will loosen the chain and give you more slack to place the chain back over the sprockets.
2 move the ladder to the outer end of the chain arm near the garage door.
Use a screwdriver to remove the snap on cover where the chain wraps around the sprocket at the upper side of the motor.
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.
This will release the door from 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.
If you find that your garage door opener chain falls off the track on which it has been placed you will need to put it back up and then tighten the chain to stop this happening in the future.
A new front sprocket costs.
Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley.
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.
Slide the outer trolley away from the inner trolley.
Drill through the sprocket and shaft and install a bolt hardened bolt if needed through the shaft.
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.
Garage door didn t open in the morning.
The reason the chain went off track was because the chain.
Loosen the nut s facing the door five full turns with a 7 16 inch wrench.
Lay the chain on the garage floor while you complete the repair.
When the garage door goes off track it can be a serious inconvenience.
Turn the nut s facing the opener motor one half turn clockwise by hand.
The chain is attached to a threaded rod that is attached to the trolley.
