How To Adjust Chain On Chamberlain Garage Door Opener

The opener should not close to the.

How to adjust chain on chamberlain garage door opener.

Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets. Do not over tighten the chain. If the door won t stay open to its full extent or doesn t close flush to the ground the travel control needs an adjustment. Find the chamberlain garage door opener technical support you need to get your garage door opener operational.

From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need. The chain got loose and popped off the gear. You loosen the locking inner nut and turn the outer nut clockwise to adjust the excess slack from the chain. Chain driven garage door openers should have some slack in the chain for optimal performance.

A flathead screwdriver is all that is needed to make a limit adjustment on most garage door openers. If the up travel isn t functioning properly turn the up limit adjustment screw clockwise. Readjust down screw turn clockwise to change travel limit for the down position. The garage door opener trolley should stop in the fully open position at minimum 1 inch from the stop bolt on the opener rail.

The proper fully closed position is when the seal on the bottom of the garage door is resting on the floor. Adjust it tight enough so that the center of the chain sags about 1 2 down from parallel with the track graphic below right. The garage door is even with but not past the garage door opening header. Testing the activation of safety mechanisms with garage door openers.

Note these adjustment screws are on the upper right side of garage door openers. Documenting how i repaired the garage door. I am not a professional.