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Chain adjustment motor lift 5000

Having adjusted chain to 13mm above mid track on closing garage door the trolley now jolts a few times and the chain in front of trolley towards door becomes slack. After half way the chain readjusts and the tension is the same when door has closed.

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: chain tension

Hi Sally, I guess you don't have the owners manual. It tells you how to adjust chain tension. If you look around near the motor side of the bar, you should see two nuts that hold a bracket tight against the bar and an adjustment screw or bolt or something to loosen or tighten the chain by moving the bar or making it longer or shorter. Adjust that so that the bar is as short as possible and put the chain back in place. Then tighten that feature till the chain is snug again and tighten the two nuts to hold the bar firmly.

Posted on Sep 11, 2008

  • 11 Answers

SOURCE: Husky 460 chains too long (or is the bar too short)

I'm am guessing the bar is not a stock bar or was miss matched at purchase by the dealer.
Have dealer look up factory bar to see what was original and either go with that or if you already have it. ask for a new rim sprocket with 1 extra tooth. If you don't have a replacable sprocket then best bet would be to have chains custom build which usually is the same price, if they treat you right.
Remember the new sprocket MUST be the same pitch and width of your chain and bar and they do make a large and small ID also.
Last resort If not wanting to trash a new bar or change out sprocket, run a couple chains when they get loose have your dealer take out a link.
Also a stihl 20" can be a 72 drive link chain where a husky could be a 70 or other.
Everything must be matched, hard nose bar is exception.
Bill Czerkie

Posted on Feb 03, 2009

  • 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 opener won't open or close door

The drive gear is stripped. Remove the cover and you can see it just in front of the motor. It is white nylon and the part number is 41A2817. Available from Sears or any good door opener service company. It will come with instructions.

Posted on Jun 06, 2009

  • 323 Answers

SOURCE: The chain on my chain saw is slack.

The adjusting screw is usually found on the right side of the saw close to the bar, near the bottom. You will need to loosen the two nuts on the side that hold the bar tight. Loosen them until the bar lifts up and down (about 1/2") with your finger.

There should be a combination spark plug wrench and screwdriver that came with your saw. If not, use a slot screwdriverto tighten the chain while you hold the bar up with two fingers.

When adjusted properly, there should be no hanging slack in the chain when it is warm. It should rest just against the bar so that you can grasp it with gloves on and pull it toward you.

When it is tightened thusly, tighten the two side nuts while holding the bar up with two fingers. If you don't tighten the two nuts enough, it will loosen and the chain will have slack again shortly.

Remember that the hotter the chain gets, the looser it will be. Make sure your chains is getting plenty of bar oil. Never use regular motor oil.

Posted on Jun 08, 2009

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1 Answer

Moter makes a skeeking noise


Check the track rollers. Lube if dry.
Check the trolley, lube as needed.
Check the long lead screw the trolley follows, lube as needed with lube for that type of opener. If it is in the motor housing, is it time for a new opener?

I had an opener that drifted in adjustment, that would go beyond the closed position a little causing the rail to bow upwards a little once closed, putting strain on the gearing shaft bearings and wore them out. I was able to order a package with the pinion gear, drive gear and sprocket and bushings, including the pulley for the opposing end in one kit.

Cautions...
-Disengage the trolley from the belt, chain or lead screw.
-Unplug the power before opening any opener covers and servicing anything inside the unit.
-Readjust the open and close travel positions

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1 Answer

My son disengaged the latch while the door was open. Then he manually closed then opened the door. When I got home the door was half open and not latched. the trolley on the track was approx 3ft away


If the track is a screw thread, then just latch the door anywhere along the track, and it will realign itself.
If the track is a chain-drive... then push door up until it clicks into latch.

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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.

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Is the door stuck in the open position? If so the trolley is probably jammed against the bolt just in front of the motor unit. Loosen the chain until the tension is removed from the trolley. Run the motor until the door is closed. While the door is closed locate the 'up limit' adjustment on the side of the motor unit and turn this 2 complete turns in the opposite direction of the arrow printed on the cover. Tighten the chain.

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1 Answer

I have Chamberlain 1160 Lift-Master farage opener. Currently the trolley stuck in the upped position agains the bolt and does not go back. When I try to close the door, the motor is humming twice, then...


Loosen the chain to remove the strain from it and run the motor until the door closes. While the door is closed locate the 'up limit' on the side of the motor unit and turn this control 2 complete turns in the opposite direction of the arrow printed on the cover. Now you can tighten the chain.

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If your door is stuck in the open position it is probably because the trolley is jammed against the bolt just in front of the motor. If so, loosen the chain enough to release the pressure on the trolley and run the opener until the door is closed. With the door closed locate the 'up limit' control on the side of the motor unit and turn this control 2 full turns in the opposite direction of the arrow printed on the cover. Tighten the chain.

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Is the door stuck in the open position? If so the trolley is probably jammed against the bolt just in front of the motor unit. Loosen the chain enough to free the trolley and then run the opener until the door is closed. While the door is closed locate the 'up limit' on the side of the motor unit and turn this control 2 complete turns in the opposite direction of the arrow printed on the cover. Tighten the chain.

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1 Answer

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I think you need to take the cover off the motor unit and watch the limit switch assembly in operation. Takes only a few seconds to see how it works and see if it is damaged in some way. You need to turn the down limit adjustment in the opposite direction of the arrow printed on the cover to stop the door sooner. I think the down force adjustment on the rear of the motor unit is out of adjustment also. This adjustment affects the safety of the opener and should only be adjusted high enough to consistently close the door.

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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.

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If the chain is adjusted properly the chain will sag slightly on one side when the door is closed and on the other side when it is open. It should not sag enough that it is dragging on the T-rail. You can adjust it at the trolley. If you over tighten it you will hear a clicking sound when the opener opens or closes.

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