How To Adjust Chain On Chamberlain Garage Door Opener

Chain driven garage door openers should have some slack in the chain for optimal performance.

How to adjust chain on chamberlain garage door opener.

Testing the activation of safety mechanisms with garage door openers. The garage door opener trolley should stop in the fully open position at minimum 1 inch from the stop bolt on the opener rail. Do not over tighten the chain. The garage door is even with but not past the garage door opening header.

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. Note these adjustment screws are on the upper right side of garage door openers. The proper fully closed position is when the seal on the bottom of the garage door is resting on the floor. You loosen the locking inner nut and turn the outer nut clockwise to adjust the excess slack from the chain.

The opener should not close to the. Readjust down screw turn clockwise to change travel limit for the down position. If the up travel isn t functioning properly turn the up limit adjustment screw clockwise. From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.

You can put the chain back on your automatic garage door opener using a simple adjustment mechanism. Find the chamberlain garage door opener technical support you need to get your garage door opener operational. This video details how to adjust the opener force and travel of the door. Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets.

Adjust it tight enough so that the center of the chain sags about 1 2 down from parallel with the track graphic below right. I am not a professional. A flathead screwdriver is all that is needed to make a limit adjustment on most garage door openers.