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Replacing trolley on garage door opener - Computers & Internet

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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cesar_quant
  • 61 Answers

SOURCE: garage door opener will not work after gear replacement

check the end shaft platic cap is installed and runs freely between the rpm sensors.. that might be ur problem..

Posted on Mar 15, 2009

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  • 3197 Answers

SOURCE: Garage door opener (chain) motor runs in reverse. Trolley slides forward trying to close door, even though it is closed, instead of sliding toward motor to open door. Happened out of the blue - was

Loosen the chain enough that you can remove it from the sprocket. Run the opener until the sprocket turns counterclockwise and stops. With the door in the open position replace the chain. You will probably need to adjust your open and close limits per your owners manual.

Posted on May 29, 2009

  • 3197 Answers

SOURCE: Garage door opens 1 foot, then stops.

It sure sounds like you have a broken door spring. While you are at it remove the cover and take a good look at the drive gear. It is white nylon and is just in front of the motor. Might be stripped and unable to take the weight of the door.

Posted on Jun 24, 2009

  • 3197 Answers

SOURCE: Craftsman garage door opener 1/2 hp will not open door

It sounds like your chain is out of sync with the limit switches. Loosen the chain enough so that you can remove it from the sprocket on top of the motor unit. Now run the opener until the sprocket runs counterclockwise and stops. Now with everything attached and the door in the open position replace and tighten the chain. You are now in sync. You may need to tweak the up and down limit controls which are on the side of the motor unit.

Posted on Aug 16, 2009

Testimonial: "Awesome. Thank you so much, Don. "

swolfinor
  • 504 Answers

SOURCE: I just had a power outage. My garage door was open...

IF THE OPENER IS IN THE OPEN POSITION THERE IS NOTHING TO LOCK IT IN THE CLOSED POSITION.
YOU CAN UNPLUG THE UNIT AND PLACE A VICE GRIP ABOVE A ROLLER ON THE TRACK. THIS WILL SECURE THE DOOR UNTIL POWER COMES BACK ON - DO NOT LEAVE THE UNIT PLUGGED IN - IT COULD BE DAMAGED BY A POWER SURGE WHEN THE POWER COMES BACK ON (ALL ELECTRONICS IN THE HOUSE SHOULD BE UNPLUGGED) ALSO IF YOU FORGET AND PUSH THE BUTTON THE VICE GRIP WOULD CAUSE THE DOOR TO COME OUT OF THE TRACK, MAKING YOUR CURRENT ISSUE SEEM SMALL.

Posted on May 23, 2010

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1 Answer

Garage door opener trolley keeps shearing off. Had it replaced a year ago, and I noticed that it is making a grinding noise and I can see it is halfway sheared off again.


issue with counterbalance springs. when you release trolley, door should balance at half way open. if i rises all the way on its own, or falls closed, then the springs are an issue and motor and trolley are working very hard in one direction or the other.

Oct 08, 2015 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

1/2 horse garage door opener doesn,t open all the way. I need about a foot more lift. The tried a trolley stops before the stop limit..Therre is no interference. I Tried adjusting the up limit to no...


You said you adjusted the up limit already. Is it adjusted as far as possible? Usually the screw will become harder to turn. You mention a new door and spring but is the opener the same? My guess is you have a new opener as well and it is out of sync with the trolley. Try turning the up limit back and see if the trolley will stop shorter. If it does, loosen the chain or belt so that you can remove if from the opener's drive gear. Bring the trolley to your stop limit and put the chain/belt back on the gear. Adjust the chain/gear tension and try door operation again. If it was a sync problem, the door should close closer to your limit. Adjust up and down travel as necessary to fine tune it. This worked for me so good luck.

Sep 18, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door can be opened manually when the trolley has


You can adjust the length of the arm between the trolley and door so that it is in a vertical position when the door is closed. This will prevent your problem.

Oct 03, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman garage door opener 1/2 hp will not open door


It sounds like your chain is out of sync with the limit switches. Loosen the chain enough so that you can remove it from the sprocket on top of the motor unit. Now run the opener until the sprocket runs counterclockwise and stops. Now with everything attached and the door in the open position replace and tighten the chain. You are now in sync. You may need to tweak the up and down limit controls which are on the side of the motor unit.

Aug 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opens 1 foot, then stops.


It sure sounds like you have a broken door spring. While you are at it remove the cover and take a good look at the drive gear. It is white nylon and is just in front of the motor. Might be stripped and unable to take the weight of the door.

Jun 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears garage door opener, chain adjustment


Loosen the inner nut on the trolley. (That is the lock nut). Then tighten the outer nut on the trolley to increase tension. The outer nut on the trolley is closest to the garage door. The chain tension should be 1/2 inch off the rail at midspan. (The chain is fastened to a threaded bolt on to the trolley. The threaded bolt has an inner and outer nut). Hope this helps.

Dec 24, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door won't go down because of interference


IF YOU ARE TALKING ABOUT THE JOINTS IN THE RAIL THE TROLLEY TRAVELS ON THEY USSUALLY ONLY GET OUT OF ALIGNMENT WHEN THE BOLTS THAT HOLD THE SECTIONS TOGETHER ARE LOOSE.

Dec 01, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman garage door opener


IF THE BELT IS MOVING - THE DOOR HAS BEEN RELEASED FROM THE TROLLEY.

PULL THE RED ROPE AND MAKE SURE IT LOCKS ONTO THE INNER TROLLEY.

Oct 18, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage opener/ brand garage master 1/3 HP


trolley is not attatced to the chain, grab that red rope that is hanging down and give it a ****. run the door up until it re-locks onto they trolley

Mar 22, 2008 | Sears Craftsman LiftMaster Chamberlain...

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