garage door opener parts advice

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Old 10-13-19, 03:39 PM
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garage door opener parts advice

Hi everyone
My GD opener is a Scovill Nutone GA 580 and operates as it should. The system is chain drive and I can't see any names or numbers on any components, and I need to find a compatible part. The door is bolted to a carriage, I will call it, by two iron arms. The carriage is plastic, and snapped where the upper arm attaches. I reattached it with mending strap but want to replace the part. So, where to find the part, and it looks like the angle iron rail it rides on has to be detached to slide it on there. Simple, right?
I'm assuming the motor is made by Nutone but the other components are made by someone else. Wrong? Thanks for any help you can offer.

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Old 10-13-19, 03:50 PM
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The part where the arm attaches is called the trolley.
 
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Old 10-13-19, 03:54 PM
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Thanks. I have seen some parts on the chamberlain website that look like they might work but it's hard to tell.
 
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Old 10-13-19, 05:04 PM
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I found an original and a superseded part number but Nutone has been gone so long these numbers are no longer in use. 51119-000 -----> 1020A-000
 
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Old 10-14-19, 03:28 AM
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Chamberlian/ Liftmaster trolley cars won't work because the chain connects to the left side of the trolley, yours connects to the right side.
 
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Old 10-14-19, 10:22 AM
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this trolley could be another manufacturer? anyone like to hazard a guess?
since it's now Monday, there is a stalvey door location in my town and I'll try them.
 
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