How do I get the trolley off the stop bolt or stop tab? The trolley can become lodged against the stop bolt/tab because the door has either opened or closed too far. The garage door opener motor will hum when attempting to open or close the door but is unable to travel due to being lodged against the bolt/tab. Typically this is caused by a misadjustment. To remove the trolley from the stop bolt, follow the steps below: First visually verify that the trolley is against the stop bolt. Make sure the garage doorway is clear of persons or obstructions. Release the door from the garage door opener by pulling the Emergency Release Handle. Manually bring the door to the closed position. Loosen the chain or belt by adjusting the outer nut 4 to 5 turns. This relieves the tension. Run the motor unit from the remote control or door control. The trolley should travel towards the door and stop. If the trolley re-engages with the door, pull the Emergency Release Handle to disengage.
Decrease the UP travel. Depending on the type of garage door opener you have, there are two methods for adjusting the travel: Turn the UP travel adjustment screw 2 full turns away from the arrow, Use the buttons to reprogram the UP travel. (See your users manual for complete programming steps) Re-tighten the outer nut so the chain or belt is 1/2 inch (T-Rail) or 1/4 inch (Square Rail) above the base of the rail. (When the door is reconnected and closed, the chain will sag. If the trolley does not move away from the bolt, repeat the steps above. In rare instances this issue may occur due to a part failure such as the logic board. To remove the trolley from the stop tab, follow the steps below: First visually verify that the trolley is against the stop tab. Decrease the DOWN travel. Turn the DOWN travel adjustment screw 2 full turns away from the arrow, After ANY adjustments are made, the safety reversal system MUST be tested. The door MUST reverse on contact with 1-1/2" high (3.8 cm) object (or 2X4 laid flat) on the floor.
Click here to see a video about how to get the trolley off the stop bolt. Why does my garage door opener hum but the door does not move? How can I disconnect the garage door opener to manually open or close my garage door? Why does my chain/belt drive garage door opener run in the wrong direction? How to replace the belt on the garage door opener How to check and adjust the chain drive tensionGarage doors have built-in safety controls. A garage door stuck in the closed position may tempt you to crash on through, but don't let frustration get the better of you. Take a few minutes to troubleshoot some built-in safeties in your door that may prevent it from opening. Typical hotspots are the battery, the wiring and the electric eye that prevents your door closing on pets -- it can also prevent your door from opening. These simple checks can keep the repairman away and save you big bucks. Ensure the door isn't in "Vacation" or "Lock" mode when it won't respond to the remote from the outside.
When in one of these modes it may open once using the remote, then must be unlocked from the wall control inside the garage. Check the battery in your remote operator by walking into the garage holding it in your hand. Press the button as you observe a small blinking red light on the box where the chain enters and exits. If the door opens as you get very close to the box, but fails to open as you back away, the battery is low and needs to be replaced. When you can't see any blinking red light at all on top the box, the battery is dead. Click the remote as you are standing under the box but can still see the top. If you can see that the red light on top is blinking, it means that the battery is fine and that the problem exists somewhere else in the system. Locate the fine wires that run away from the control box on the ceiling. There are several inspection points, two run from the box to the manual switch on the wall -- most likely by the walk-in door, and four running from the back of the box to the electric eye locations on both sides of the door a few inches off the floor.
Hold the remote in one hand. Grab the wires a few inches back from their connection points with the other hand. Wiggle the wires one by one while pressing the remote switch with the other hand. If one of the wires is loose, when you wiggle it, it will cause the door to open. Shut off the power to the garage door opener. Use a screwdriver to tighten the wire. Turn the power back on and the door should open and close normally. Check the door's electric eye. This feature normally only fails when the door is already open and won't close, but some models won't work either way. Just a few inches off the floor on one side of the track, there are two small boxes that aim a beam across the floor at each other. If the beam is interrupted or won't align, the door may not work at all. Use a tissue to clean both electric eyes. The most often cause of this problem is a spider making a home in the eye, so if you're afraid of spiders, you might want to use something else to get him out of there. If you've cleaned the eyes but the door still won't budge, the eyes may be misaligned.
The two eyes should be pointing directly at each other. They are typically mounted on thin piece of metal that can be accidentally bent. If it is misaligned, you should be able to see this. You can't see the beam, but if you take the small box with your fingers, you can bend it. Bend it a little at a time, while clicking the remote until the door opens. Things You Will Need Ladder Spider removal tools Tip Warning References Mount Garage Doors: Troubleshooting Photo Credits Jupiterimages/Comstock/Getty Images Suggest a Correction An electric garage door can become stuck in the open position for several reasons. Because of the potential danger of broken parts, you should inspect the garage door for damage before attempting to close it. When you know there is no damage to the door, you can close the garage door by disconnecting the door from the electric opener. Look at the door springs before disconnecting the door from the door opener. If the springs are broken, you will need to call a door professional to replace the door springs.
Also inspect the door cables on each side of the door. The cables should be tight without any slack. Loose or missing cables will require a door professional. Look at the door rollers on each side of the door. All rollers should be inside the door track. If they are not, you will need to lower the door slowly by hand. If the bottom roller is out on one side, bend the outside edge of the track with a pair of vise grips and push the roller into the track before lowering the door. Bend the track edge back with vise grips. Pull the emergency release cord to free the garage door from the door opener if the springs and cable are in good condition. The release cord is on the carriage connecting the door opener arm to the opener track. When you pull down on the rope, the carriage releases from the base, and you can operate the door manually. Watch and feel the travel of the door as you close it. If you notice any binding, the opener will not force the door down. Loosen the bolt that secures the door track bracket to the wall with a socket wrench, and pull the track away from the door edge slightly nearest the binding area.
Tighten the track bracket bolt with the socket wrench. Test the garage door opener while the door is down. Push the wall button to operate the door opener. If the opener operates, the binding was setting the internal safety mechanisms off, alerting the opener not to close. Raise the door slightly and jiggle the emergency cord to lock the carriage back over the carriage base, and attempt to operate the door with the motor. Clean the photoelectric safety eyes at the bottom of the door track with a clean rag if the opener did not operate with the push button. Sometimes dirt and moisture will keep the eyes from making a good connection. Push the wall button again to see if the opener operates. If the opener does not operate, call a door professional to troubleshoot your door opener. Meanwhile, you can still open and close your door manually. You May Also Like A garage door can stuck halfway because of electrical problems, dirt on the track or a swelling, warped door. Doors stick for a variety of reasons, but it's a pretty easy fix once you identify where the door is sticking.
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