Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor.
Garage door chain sprocket broke.
A new front sprocket costs about 150 200 include the labor to install it.
The front sprocket is at the end of the opener rail closest to the garage door opening.
Another common cause for a loose chain could be the front sprocket breaking.
Lay the chain on the garage floor while you complete the repair.
Pull the chain off the motor unit sprocket and out of the chain spreader.
Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley.
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Eventually this will cause the sprocket to snap off.
Pull the chain toward the garage door and hold it in position.
Long lengths up to 100 continuous lengths.
Slide the outer trolley away from the inner trolley.
Chain and links in steel nickle and stainless steel.
Five days sooner than estimated.
Liftmaster 41a3261 1 chain drive dual gear sprocket assembly.
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A broken garage door chain will immediately impact your garage door s operation and render its automatic motorized capability effectively useless.
The chain wraps around this sprocket as well as the gear and sprocket at the motor.
Liftmaster 41a5585 gear and sprocket assembly.
Days from east coast to the foothills of the west coast.
Immediate troubleshooting is required and a new garage door chain will need to be installed in place of the old one.
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Thread the nut s facing the door clockwise until it meets the bracket then release the chain.
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Tighten the bolts on.
Liftmaster 41a4837 1 worm gear and retainer.
When the bushings collapse on the top plate the chain or belt becomes loose causing more friction on the gear sprocket.
One of the most common repairs on a liftmaster garage door opener is a broken gear sprocket.
This gives the appearance of a broken chain or belt.