Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Door opens and gets stuck on casing of motor

Our door opens and shuts fine but every two or three times the door opens too far and the piece of metal that the door attatches too gets stuck on the motor casing because it opens too far its the same piece of metal that the latch hooks to on the chain

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Do yu mean the trolley opens too far. Check travel limit mechanism (Take cover off). Wires attached. My need new board.

Posted on Jan 17, 2009

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Posted on Jan 02, 2017

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Well I'll try to help you get this opened. I don't know how much space you have at the top side edge of the dishwasher. You need a long stiff rod like a metal clothes hanger straightened so it can reach from the side to a little past the dishwasher middle. You need to push it in between the door top and the dishwasher body up at the latch area. What holds the door closed is a flat metal piece with a plastic hook on the end facing down towards the floor. You need to try and get the rod under the metal piece and lift it slightly, hopefully to unhook the the door. If you can't do that, the only alternative is to pull hard on the door handle and you should be able to break the plastic part of the latch which will then have to be replaced. The part that should break is the top hook which would be an easy replacement, but I can't be sure thats all the damage to the latch that will happen. It may do some damage to the part inside the door also. This is last resort. I'll try to attach a parts breakdown of the tub so you can see the latch hook. Look at item #50




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How to install a rear window regulator on a 2000 Oldsmobile Intrigue


How do you remove door panels and replace window regulator on an Intrigue? Answer : For a 2002 Intrigue – Front Passenger I didn’t disconnect battery. You use window switch later to align window tabs to regulator frame – with ignition off power locks work, nothing is exposed.
1. Remove visible screw under armrest, pop out finger inset oval panel, remove exposed 2nd screw. 2. Pop off door handle trim – lock button assembly slide thru its hole in door panel. 3. Pop off window switch trim/holder – slide thru its hole in door panel. 4. Remove 2 slot screws under bottom of door.
5. I used a smooth metal letter opener (or old fork) to pry panel from door at each point plastic fasteners insert into metal. Start prying a little, see three on bottom perimeter two inches from edge. Three on door open edge and three on door hinge edge. Slow and easy = whole panel will pop off. A metal compression spring fastener connects at top door hinge edge trim – pry out. Be sure door lock and window switch remain inside. Clean all surfaces of door panel and lay on back seat.
6. With panel off you see clear plastic moisture sheet stuck to door with black rubbery paste - peel it from door for reattachment. You now see mechanism and fastener points. Lay out replacement window regulator and motor on mat by door to help you recognize fastening points, etc.
7. Carefully pull glass all way up and hold in place with two pieces duck tape two feet long with ¼# removal tabovers. Put a foot on outside glass and loop over door frame a foot to inside glass – with room to later redo when you twice lower and raise a foot to access bolts removing/attaching it to regulator bar.
8. Remove 3 bolts holding motor to door. 9. Remove upper 2 bolts and lower 2 bolts holding regulator frame to door.
10. Lower window to expose thru panel cutout area two bolts holding glass tabs to regulator, retape securely. Remove bolts, raise window, retape securely by looping over door frame.
11. Window regulator and motor assembly comes out as unit. Unplug window switch tab to release from motor. BEFORE reassembly clean the inside of the door, put in a little Borax for bugs, etc.
12. Reassemble by starting three motor bolts, fitting regulator assembly in door cavity. Replug window switch, motor can be placed in thru oval slots, leave all bolts loose. Replace two upper and two lower regulator bracket bolts, leave loose.
13. Turn on ignition, use window switch to lower window glass regulator tab bracket until accessible thru panel cutout. Turn off ignition, manually lower glass until tabs align with regulator bracket bolt holes and tighten these bolts. Take tape off, turn on ignition, raise window to top.
14. Tighten three motor bolts and four regulator bracket bolts, make sure alignment is OK. Remove your tape residue - clean goo from both glass sides with Goof Off. THEN raise and lower several times to assure all fits and works like new.
15. Reinstall clear plastic sheet, aligning any fastener holes and rubbing down perimeter with a cloth .
16. Align door panel, assure door lock and window switch are pulled thru. Visually align each tab on door opening side and pop them in one at a time. Continue on bottom – make sure you see them align or they will break. Finish on door hinge side and with metal fastener at top. IF you break a fastener, take one from small bag you bought from Pep boys - otherwise take bag back for refund…
17. Reinstall 2 armrest screws and 2 bottom panel screws, then pop in door lock, trim piece and window switch.
Clean the window inside and out with glass cleaner/polish/raineze so it will slide easily and your done. You can’t do anything about the motors going out. You can avoid regulator tab breaks by making sure the window is raised BEFORE closing those big doors – down is the weak moment!! I work slow and clean as I go, the job took two hours. I highly recommend partsgeek.com – saved a bundle over dealer and they shipped everything in several days – as ordered!

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1 Answer

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"The problem lies in the RPM sensor, most likely due to the interrupter cup assembly. The interrupter cup assembly is the black cap that runs through the RPM sensor. You may have forgotten to re-attach this piece or it is probably moving too far out when the garage sets in motion. To fix this, remove the cup assembly, unscrew the two screws on the top metal piece with a 1/8 allen wrench, push the metal piece as far in as possible and put the screws back on. This will give more room for the cup assembly to spin and be read by the RPM sensor. Hope this helps!"

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Look at your manuel find the page that shows the limit access switch. (Unplug your opener.) It isn't really a switch, but the three white plastic screw like parts. The center has a brown wire connected to it, which has a metal piece that is as wide as all three white screws. The outside screws are your limit access stop guides, one for the up control stop guide and the other for the down control stop guide. If the center screw with the metal part gets caught behind on of the stop guides the motor will not engage. Gently move metal piece from behind the stop guide.

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Reason : the shutter of the laser is not opened by the cartridge. (I had same problem, and solved it)

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Now, if it works and you are grateful, I am interested in empty cartridges.If you have some tell me. Thanks.

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