Then 30 minutes later when I arrived home the door only opened about 1 foot and stopped. Replace the gear and sprocket assembly or the drive and worm gears when they're worn and making noises. Chain adjustment and lithium grease on sprocket did not help. I replaced 30 years old Craftsman opener with Craftsman ¾ HP Chain Drive Garage Door Opener model 139. 1 Unplug the motor of the garage-door opener. Have a chain drive 1/2 HP Crafstman Garage door opener. This afternoon the door went up then down properly for my son. Recenly I noticed intermittent grinding noise from opener when door is opening (during last two feet of travel). 5 Place rubber pad behind mounting bracket and reattach it to the wall. Noisy garage doors are usually caused by worn rollers, loose hardware, parts that need lubrication or an opener in need of anti-vibration pads—all simple fixes. 3 Unbolt and lower motor from mounting straps; set motor on top of wood blocks. Worn gears inside the garage door opener's motor unit can make grinding or buzzing noises. 54990 about three weeks back. 2 Place stepladder under garage-door opener motor; set wood block on top of ladder. Snug up all the nuts and bolts on your garage door track and check for worn parts and replace where needed. A worn belt or chain and cable assembly can also make noise-tighten chain or … 4 Disconnect door-track mounting bracket from wall.