Questions & Answers for: chamberlain garage door gear keeps

Question about Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

The nylon drive gear on Craftsman Garage Door keep stripping

...Garage Door keep stripping The nylon drive gear on my Craftsman Garage Doormodel 139.533SRT keeps stripping the teeth off of it. I have replaced it twice now. Once replaced it works for a couple of ...

Question about Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

2 Answers

I have to manually help the garage door open or

...garage door open or close when button is pressed, if not the motor will just keep running and wont open or close at all.I have a craftsman 1/2HP heavy duty garage door opener probably about10yrs old. ...

Question about Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

1 Answer

Motor comes on and only moves door about 1/2 inch,

door until it is turned off. You need to remove the cover from the motor unit and check the drive gear. It is a white nylon gear just in front of the motor and most likely you will find it is stripped

Question about Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

1 Answer

I have a Chamberlain door

...Chamberlain door opener. The gear stripped. I replaced the gear. Now the door keeps going down and doesn;t stop. Same going up. It hits the unit. I can't seem to control the travel knobs on the ...