Repair Tutorial for 9v Train Motor. If it flutters down the track, this is how you fix the loose contacts. : r/LEGOtrains
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10153 9V Train Motor - Brickipedia, the LEGO Wiki
LEGO® Motor History
Electric, Train Motor 9V with Wheels : Part 590 | BrickLink
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LEGO® Motor History
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LEGO 9V Technic Motors compared characteristics
Lego® 9V TRAIN Railway 10205 MY OWN TRAIN Large BLACK 9V Motor | eBay
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Tutorial] Modifying a 9V Train Motor - LEGO Train Tech - Eurobricks Forums
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LEGO part 87574c01 - Black Electric, Train Motor 9V RC Train with Integrated PF Attachment, Orange Wheel Holders (motor only, no attached wheels) at BrickScout
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How to motorize the Lego Winter Train with a 9V or 12V motor - YouTube
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BrickLink - Part 87574c01 : LEGO Electric, Train Motor 9V RC Train with Integrated PF Attachment, Orange Wheel Holders [Electric, Train] - BrickLink Reference Catalog